remove java 21 warnings in jsch

files-ftp-fs/build.gradle

@@ -4,7 +4,6 @@ dependencies {
     testImplementation testLibs.junit.jupiter.params
     testImplementation testLibs.mockito.core
     testImplementation testLibs.mockito.junit.jupiter
-    testImplementation testLibs.slf4j
     testImplementation project(':files-ftp-mock')
 }
 

files-ftp-fs/src/main/java/module-info.java

@@ -1,13 +1,15 @@
 import java.nio.file.spi.FileSystemProvider;
 import org.xbib.files.FileServiceProvider;
 import org.xbib.files.ftp.fs.FTPFileSystemProvider;
+import org.xbib.files.ftp.fs.FTPSFileSystemProvider;
 import org.xbib.files.ftp.fs.spi.FTPFileServiceProvider;
+import org.xbib.files.ftp.fs.spi.FTPSFileServiceProvider;
 
 module org.xbib.files.ftp.fs {
     requires org.xbib.files;
     requires org.xbib.files.ftp;
     exports org.xbib.files.ftp.fs;
     exports org.xbib.files.ftp.fs.spi;
-    provides FileSystemProvider with FTPFileSystemProvider;
+    provides FileSystemProvider with FTPFileSystemProvider, FTPSFileSystemProvider;
-    provides FileServiceProvider with FTPFileServiceProvider;
+    provides FileServiceProvider with FTPFileServiceProvider, FTPSFileServiceProvider;
 }

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/FTPClientPool.java

@@ -20,24 +20,27 @@ import java.util.concurrent.BlockingQueue;
 /**
  * A pool of FTP clients, allowing multiple commands to be executed concurrently.
  */
-final class FTPClientPool {
+class FTPClientPool {
 
-    private final String hostname;
+    protected final String hostname;
-    private final int port;
+    protected final int port;
+    protected final FTPEnvironment env;
 
-    private final FTPEnvironment env;
+    private FileSystemExceptionFactory exceptionFactory;
-    private final FileSystemExceptionFactory exceptionFactory;
 
-    private final BlockingQueue<Client> pool;
+    private BlockingQueue<Client> pool;
 
     FTPClientPool(String hostname, int port, FTPEnvironment env) throws IOException {
         this.hostname = hostname;
         this.port = port;
         this.env = env.clone();
+        init();
+    }
+
+    protected void init() throws IOException {
         this.exceptionFactory = env.getExceptionFactory();
         final int poolSize = env.getClientConnectionCount();
         this.pool = new ArrayBlockingQueue<>(poolSize);
-
         try {
             for (int i = 0; i < poolSize; i++) {
                 pool.add(new Client(true));
@@ -148,21 +151,23 @@ final class FTPClientPool {
         pool.add(client);
     }
 
-    final class Client implements Closeable {
+    class Client implements Closeable {
-
-        private final FTPClient client;
-        private final boolean pooled;
 
+        protected final boolean pooled;
+        private FTPClient client;
         private FileType fileType;
         private FileStructure fileStructure;
         private FileTransferMode fileTransferMode;
 
         private int refCount = 0;
 
-        private Client(boolean pooled) throws IOException {
+        Client(boolean pooled) throws IOException {
-            this.client = env.createClient(hostname, port);
             this.pooled = pooled;
+            init();
+        }
 
+        protected void init() throws IOException {
+            this.client = env.createClient(hostname, port);
             this.fileType = env.getDefaultFileType();
             this.fileStructure = env.getDefaultFileStructure();
             this.fileTransferMode = env.getDefaultFileTransferMode();

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/FTPEnvironment.java

@@ -4,6 +4,7 @@ import org.xbib.files.ftp.FTP;
 import org.xbib.files.ftp.FTPClient;
 import org.xbib.files.ftp.FTPClientConfig;
 import org.xbib.files.ftp.FTPFileEntryParser;
+import org.xbib.files.ftp.FTPSClient;
 import org.xbib.files.ftp.parser.FTPFileEntryParserFactory;
 
 import javax.net.ServerSocketFactory;
@@ -320,8 +321,6 @@ public class FTPEnvironment implements Map<String, Object>, Cloneable {
         return this;
     }
 
-    // FTPClient
-
     /**
      * Stores the timeout in milliseconds to use when reading from data connections.
      *
@@ -566,12 +565,10 @@ public class FTPEnvironment implements Map<String, Object>, Cloneable {
     }
 
     FileStructure getDefaultFileStructure() {
-        // as specified by FTPClient
         return FileStructure.FILE;
     }
 
     FileTransferMode getDefaultFileTransferMode() {
-        // as specified by FTPClient
         return FileTransferMode.STREAM;
     }
 
@@ -594,6 +591,15 @@ public class FTPEnvironment implements Map<String, Object>, Cloneable {
         return client;
     }
 
+    FTPSClient createSecureClient(String hostname, int port) throws IOException {
+        FTPSClient client = new FTPSClient();
+        initializePreConnect(client);
+        connect(client, hostname, port);
+        initializePostConnect(client);
+        verifyConnection(client);
+        return client;
+    }
+
     void initializePreConnect(FTPClient client) throws IOException {
         client.setListHiddenFiles(true);
 

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/FTPFileStrategy.java

@@ -1,7 +1,6 @@
 package org.xbib.files.ftp.fs;
 
 import org.xbib.files.ftp.FTPFile;
-import org.xbib.files.ftp.FTPFileFilter;
 
 import java.io.IOException;
 import java.nio.file.NoSuchFileException;
@@ -17,12 +16,9 @@ import java.util.List;
 abstract class FTPFileStrategy {
 
     static FTPFileStrategy getInstance(FTPClientPool.Client client) throws IOException {
-        FTPFile[] ftpFiles = client.listFiles("/", new FTPFileFilter() {
+        FTPFile[] ftpFiles = client.listFiles("/", ftpFile -> {
-            @Override
+            String fileName = FTPFileSystem.getFileName(ftpFile);
-            public boolean accept(FTPFile ftpFile) {
+            return FTPFileSystem.CURRENT_DIR.equals(fileName);
-                String fileName = FTPFileSystem.getFileName(ftpFile);
-                return FTPFileSystem.CURRENT_DIR.equals(fileName);
-            }
         });
         return ftpFiles.length == 0 ? NonUnix.INSTANCE : Unix.INSTANCE;
     }
@@ -67,12 +63,9 @@ abstract class FTPFileStrategy {
         FTPFile getFTPFile(FTPClientPool.Client client, FTPPath path) throws IOException {
             final String name = path.fileName();
 
-            FTPFile[] ftpFiles = client.listFiles(path.path(), new FTPFileFilter() {
+            FTPFile[] ftpFiles = client.listFiles(path.path(), ftpFile -> {
-                @Override
+                String fileName = FTPFileSystem.getFileName(ftpFile);
-                public boolean accept(FTPFile ftpFile) {
+                return FTPFileSystem.CURRENT_DIR.equals(fileName) || (name != null && name.equals(fileName));
-                    String fileName = FTPFileSystem.getFileName(ftpFile);
-                    return FTPFileSystem.CURRENT_DIR.equals(fileName) || (name != null && name.equals(fileName));
-                }
             });
             client.throwIfEmpty(path.path(), ftpFiles);
             if (ftpFiles.length == 1) {
@@ -94,21 +87,13 @@ abstract class FTPFileStrategy {
             if (ftpFile.isDirectory() && FTPFileSystem.CURRENT_DIR.equals(FTPFileSystem.getFileName(ftpFile))) {
                 // The file is returned using getFTPFile, which returns the . (current directory) entry for directories.
                 // List the parent (if any) instead.
-
                 final String parentPath = path.toAbsolutePath().parentPath();
                 final String name = path.fileName();
-
                 if (parentPath == null) {
                     // path is /, there is no link
                     return null;
                 }
-
+                FTPFile[] ftpFiles = client.listFiles(parentPath, ftpFile1 -> (ftpFile1.isDirectory() || ftpFile1.isSymbolicLink()) && name.equals(FTPFileSystem.getFileName(ftpFile1)));
-                FTPFile[] ftpFiles = client.listFiles(parentPath, new FTPFileFilter() {
-                    @Override
-                    public boolean accept(FTPFile ftpFile) {
-                        return (ftpFile.isDirectory() || ftpFile.isSymbolicLink()) && name.equals(FTPFileSystem.getFileName(ftpFile));
-                    }
-                });
                 client.throwIfEmpty(path.path(), ftpFiles);
                 return ftpFiles[0].getLink() == null ? null : ftpFiles[0];
             }
@@ -122,9 +107,7 @@ abstract class FTPFileStrategy {
 
         @Override
         List<FTPFile> getChildren(FTPClientPool.Client client, FTPPath path) throws IOException {
-
             FTPFile[] ftpFiles = client.listFiles(path.path());
-
             boolean isDirectory = false;
             List<FTPFile> children = new ArrayList<>(ftpFiles.length);
             for (FTPFile ftpFile : ftpFiles) {
@@ -135,7 +118,6 @@ abstract class FTPFileStrategy {
                     children.add(ftpFile);
                 }
             }
-
             if (!isDirectory && children.size() <= 1) {
                 // either zero or one, check the parent to see if the path exists and is a directory
                 FTPPath currentPath = path;
@@ -148,7 +130,6 @@ abstract class FTPFileStrategy {
                     throw new NotDirectoryException(path.path());
                 }
             }
-
             return children;
         }
 

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/FTPFileSystem.java

@@ -53,43 +53,51 @@ public class FTPFileSystem extends FileSystem {
     static final String CURRENT_DIR = ".";
     static final String PARENT_DIR = "..";
 
-    private static final Set<String> SUPPORTED_FILE_ATTRIBUTE_VIEWS = Collections
+    protected static final Set<String> SUPPORTED_FILE_ATTRIBUTE_VIEWS = Collections
             .unmodifiableSet(new HashSet<>(Arrays.asList("basic", "owner", "posix")));
-    private static final Set<String> BASIC_ATTRIBUTES = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(
+    protected static final Set<String> BASIC_ATTRIBUTES = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(
             "basic:lastModifiedTime", "basic:lastAccessTime", "basic:creationTime", "basic:size",
             "basic:isRegularFile", "basic:isDirectory", "basic:isSymbolicLink", "basic:isOther", "basic:fileKey")));
-    private static final Set<String> OWNER_ATTRIBUTES = Collections.unmodifiableSet(new HashSet<>(Collections.singletonList(
+    protected static final Set<String> OWNER_ATTRIBUTES = Collections.unmodifiableSet(new HashSet<>(Collections.singletonList(
             "owner:owner")));
-    private static final Set<String> POSIX_ATTRIBUTES = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(
+    protected static final Set<String> POSIX_ATTRIBUTES = Collections.unmodifiableSet(new HashSet<>(Arrays.asList(
             "posix:lastModifiedTime", "posix:lastAccessTime", "posix:creationTime", "posix:size",
             "posix:isRegularFile", "posix:isDirectory", "posix:isSymbolicLink", "posix:isOther", "posix:fileKey",
             "posix:owner", "posix:group", "posix:permissions")));
-    private final FTPFileSystemProvider provider;
+
-    private final Iterable<Path> rootDirectories;
+    protected final FTPFileSystemProvider provider;
-    private final FileStore fileStore;
+    protected final URI uri;
-    private final Iterable<FileStore> fileStores;
+    protected final FTPEnvironment env;
-    private final FTPClientPool clientPool;
+    protected Iterable<Path> rootDirectories;
-    private final URI uri;
+    protected FileStore fileStore;
-    private final String defaultDirectory;
+    protected Iterable<FileStore> fileStores;
-    private final FTPFileStrategy ftpFileStrategy;
+    private FTPClientPool clientPool;
+    protected String defaultDirectory;
+    FTPFileStrategy ftpFileStrategy;
     private final AtomicBoolean open = new AtomicBoolean(true);
 
     public FTPFileSystem(FTPFileSystemProvider provider, URI uri, FTPEnvironment env) throws IOException {
         this.provider = Objects.requireNonNull(provider);
+        this.uri = Objects.requireNonNull(uri);
+        this.env = Objects.requireNonNull(env);
+        init();
+    }
+
+    protected void init() throws IOException {
         this.rootDirectories = Collections.<Path>singleton(new FTPPath(this, "/"));
         this.fileStore = new FTPFileStore(this);
         this.fileStores = Collections.<FileStore>singleton(fileStore);
-
         this.clientPool = new FTPClientPool(uri.getHost(), uri.getPort(), env);
-        this.uri = Objects.requireNonNull(uri);
-
         try (FTPClientPool.Client client = clientPool.get()) {
             this.defaultDirectory = client.pwd();
-
             this.ftpFileStrategy = FTPFileStrategy.getInstance(client);
         }
     }
 
+    FTPClientPool getClientPool() {
+        return clientPool;
+    }
+
     public static String getFileName(FTPFile ftpFile) {
         String fileName = ftpFile.getName();
         if (fileName == null) {
@@ -469,7 +477,8 @@ public class FTPFileSystem extends FileSystem {
             getFTPFile(client, path);
         }
         String fileName = path.fileName();
-        return !CURRENT_DIR.equals(fileName) && !PARENT_DIR.equals(fileName) && fileName.startsWith(".");
+        return !CURRENT_DIR.equals(fileName) && !PARENT_DIR.equals(fileName) &&
+                fileName != null && fileName.startsWith(".");
     }
 
     public FileStore getFileStore(FTPPath path) throws IOException {
@@ -492,16 +501,11 @@ public class FTPFileSystem extends FileSystem {
     }
 
     private boolean hasAccess(FTPFile ftpFile, AccessMode mode) {
-        switch (mode) {
+        return switch (mode) {
-            case READ:
+            case READ -> ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.READ_PERMISSION);
-                return ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.READ_PERMISSION);
+            case WRITE -> ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.WRITE_PERMISSION);
-            case WRITE:
+            case EXECUTE -> ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.EXECUTE_PERMISSION);
-                return ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.WRITE_PERMISSION);
+        };
-            case EXECUTE:
-                return ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.EXECUTE_PERMISSION);
-            default:
-                return false;
-        }
     }
 
     public PosixFileAttributes readAttributes(FTPPath path, LinkOption... options) throws IOException {

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/FTPSClientPool.java

@@ -0,0 +1,442 @@
+package org.xbib.files.ftp.fs;
+
+import org.xbib.files.ftp.FTPSClient;
+import org.xbib.files.ftp.FTPFile;
+import org.xbib.files.ftp.FTPFileFilter;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InterruptedIOException;
+import java.io.OutputStream;
+import java.nio.file.OpenOption;
+import java.time.ZonedDateTime;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+
+/**
+ * A pool of FTPS clients, allowing multiple commands to be executed concurrently.
+ */
+class FTPSClientPool extends FTPClientPool {
+
+    private FileSystemExceptionFactory exceptionFactory;
+
+    private BlockingQueue<Client> pool;
+
+    FTPSClientPool(String hostname, int port, FTPEnvironment env) throws IOException {
+        super(hostname, port, env);
+    }
+
+    @Override
+    protected void init() throws IOException {
+        this.exceptionFactory = env.getExceptionFactory();
+        final int poolSize = env.getClientConnectionCount();
+        this.pool = new ArrayBlockingQueue<>(poolSize);
+        try {
+            for (int i = 0; i < poolSize; i++) {
+                pool.add(new Client(true));
+            }
+        } catch (IOException e) {
+            // creating the pool failed, disconnect all clients
+            for (Client client : pool) {
+                try {
+                    client.disconnect();
+                } catch (IOException e2) {
+                    e.addSuppressed(e2);
+                }
+            }
+            throw e;
+        }
+    }
+
+    Client get() throws IOException {
+        try {
+            Client client = pool.take();
+            try {
+                if (!client.isConnected()) {
+                    client = new Client(true);
+                }
+            } catch (final Exception e) {
+                // could not create a new client; re-add the broken client to the pool to prevent pool starvation
+                pool.add(client);
+                throw e;
+            }
+            client.increaseRefCount();
+            return client;
+
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            InterruptedIOException iioe = new InterruptedIOException(e.getMessage());
+            iioe.initCause(e);
+            throw iioe;
+        }
+    }
+
+    Client getOrCreate() throws IOException {
+        Client client = pool.poll();
+        if (client == null) {
+            // nothing was taken from the pool, so no risk of pool starvation if creating the client fails
+            return new Client(false);
+        }
+        try {
+            if (!client.isConnected()) {
+                client = new Client(true);
+            }
+        } catch (final Exception e) {
+            // could not create a new client; re-add the broken client to the pool to prevent pool starvation
+            pool.add(client);
+            throw e;
+        }
+        client.increaseRefCount();
+        return client;
+    }
+
+    void keepAlive() throws IOException {
+        List<Client> clients = new ArrayList<>();
+        pool.drainTo(clients);
+
+        IOException exception = null;
+        for (Client client : clients) {
+            try {
+                client.keepAlive();
+            } catch (IOException e) {
+                exception = add(exception, e);
+            } finally {
+                returnToPool(client);
+            }
+        }
+        if (exception != null) {
+            throw exception;
+        }
+    }
+
+    void close() throws IOException {
+        List<Client> clients = new ArrayList<>();
+        pool.drainTo(clients);
+
+        IOException exception = null;
+        for (Client client : clients) {
+            try {
+                client.disconnect();
+            } catch (IOException e) {
+                exception = add(exception, e);
+            }
+        }
+        if (exception != null) {
+            throw exception;
+        }
+    }
+
+    private IOException add(IOException existing, IOException e) {
+        if (existing == null) {
+            return e;
+        }
+        existing.addSuppressed(e);
+        return existing;
+    }
+
+    private void returnToPool(Client client) {
+        assert client.refCount == 0;
+
+        pool.add(client);
+    }
+
+    class Client extends FTPClientPool.Client {
+
+        private FTPSClient client;
+        private FileType fileType;
+        private FileStructure fileStructure;
+        private FileTransferMode fileTransferMode;
+
+        private int refCount = 0;
+
+        private Client(boolean pooled) throws IOException {
+            super(pooled);
+        }
+
+        @Override
+        protected void init() throws IOException {
+            this.client = env.createSecureClient(hostname, port);
+            this.fileType = env.getDefaultFileType();
+            this.fileStructure = env.getDefaultFileStructure();
+            this.fileTransferMode = env.getDefaultFileTransferMode();
+        }
+
+        private void increaseRefCount() {
+            refCount++;
+        }
+
+        private int decreaseRefCount() {
+            if (refCount > 0) {
+                refCount--;
+            }
+            return refCount;
+        }
+
+        private void keepAlive() throws IOException {
+            client.sendNoOp();
+        }
+
+        private boolean isConnected() {
+            if (client.isConnected()) {
+                try {
+                    keepAlive();
+                    return true;
+                } catch (IOException e) {
+                    // the keep alive failed - treat as not connected, and actually disconnect quietly
+                    disconnectQuietly();
+                }
+            }
+            return false;
+        }
+
+        private void disconnect() throws IOException {
+            client.disconnect();
+        }
+
+        private void disconnectQuietly() {
+            try {
+                client.disconnect();
+            } catch (IOException e) {
+                // ignore
+            }
+        }
+
+        @Override
+        public void close() throws IOException {
+            if (decreaseRefCount() == 0) {
+                if (pooled) {
+                    returnToPool(this);
+                } else {
+                    disconnect();
+                }
+            }
+        }
+
+        String pwd() throws IOException {
+            String pwd = client.printWorkingDirectory();
+            if (pwd == null) {
+                throw new FTPFileSystemException(client.getReplyCode(), client.getReplyString());
+            }
+            return pwd;
+        }
+
+        private void applyTransferOptions(TransferOptions options) throws IOException {
+            if (options.fileType != null && options.fileType != fileType) {
+                options.fileType.apply(client);
+                fileType = options.fileType;
+            }
+            if (options.fileStructure != null && options.fileStructure != fileStructure) {
+                options.fileStructure.apply(client);
+                fileStructure = options.fileStructure;
+            }
+            if (options.fileTransferMode != null && options.fileTransferMode != fileTransferMode) {
+                options.fileTransferMode.apply(client);
+                fileTransferMode = options.fileTransferMode;
+            }
+        }
+
+        InputStream newInputStream(String path, OpenOptions options) throws IOException {
+            assert options.read;
+
+            applyTransferOptions(options);
+
+            InputStream in = client.retrieveFileStream(path);
+            if (in == null) {
+                throw exceptionFactory.createNewInputStreamException(path, client.getReplyCode(), client.getReplyString());
+            }
+            refCount++;
+            return new FTPInputStream(path, in, options.deleteOnClose);
+        }
+
+        OutputStream newOutputStream(String path, OpenOptions options) throws IOException {
+            assert options.write;
+
+            applyTransferOptions(options);
+
+            OutputStream out = options.append ? client.appendFileStream(path) : client.storeFileStream(path);
+            if (out == null) {
+                throw exceptionFactory.createNewOutputStreamException(path, client.getReplyCode(), client.getReplyString(), options.options);
+            }
+            refCount++;
+            return new FTPOutputStream(path, out, options.deleteOnClose);
+        }
+
+        private void finalizeStream() throws IOException {
+            assert refCount > 0;
+
+            if (!client.completePendingCommand()) {
+                throw new FTPFileSystemException(client.getReplyCode(), client.getReplyString());
+            }
+            if (decreaseRefCount() == 0) {
+                if (pooled) {
+                    returnToPool(Client.this);
+                } else {
+                    disconnect();
+                }
+            }
+        }
+
+        void storeFile(String path, InputStream local, TransferOptions options, Collection<? extends OpenOption> openOptions) throws IOException {
+            applyTransferOptions(options);
+
+            if (!client.storeFile(path, local)) {
+                throw exceptionFactory.createNewOutputStreamException(path, client.getReplyCode(), client.getReplyString(), openOptions);
+            }
+        }
+
+        FTPFile[] listFiles(String path) throws IOException {
+            return client.listFiles(path);
+        }
+
+        FTPFile[] listFiles(String path, FTPFileFilter filter) throws IOException {
+            return client.listFiles(path, filter);
+        }
+
+        void throwIfEmpty(String path, FTPFile[] ftpFiles) throws IOException {
+            if (ftpFiles.length == 0) {
+                throw exceptionFactory.createGetFileException(path, client.getReplyCode(), client.getReplyString());
+            }
+        }
+
+        void mkdir(String path) throws IOException {
+            if (!client.makeDirectory(path)) {
+                throw exceptionFactory.createCreateDirectoryException(path, client.getReplyCode(), client.getReplyString());
+            }
+        }
+
+        void delete(String path, boolean isDirectory) throws IOException {
+            boolean success = isDirectory ? client.removeDirectory(path) : client.deleteFile(path);
+            if (!success) {
+                throw exceptionFactory.createDeleteException(path, client.getReplyCode(), client.getReplyString(), isDirectory);
+            }
+        }
+
+        void rename(String source, String target) throws IOException {
+            if (!client.rename(source, target)) {
+                throw exceptionFactory.createMoveException(source, target, client.getReplyCode(), client.getReplyString());
+            }
+        }
+
+        ZonedDateTime mdtm(String path) throws IOException {
+            FTPFile file = client.mdtmFile(path);
+            return file == null ? null : file.getTimestamp();
+        }
+
+        private final class FTPInputStream extends InputStream {
+
+            private final String path;
+            private final InputStream in;
+            private final boolean deleteOnClose;
+
+            private boolean open = true;
+
+            private FTPInputStream(String path, InputStream in, boolean deleteOnClose) {
+                this.path = path;
+                this.in = in;
+                this.deleteOnClose = deleteOnClose;
+            }
+
+            @Override
+            public int read() throws IOException {
+                return in.read();
+            }
+
+            @Override
+            public int read(byte[] b) throws IOException {
+                return in.read(b);
+            }
+
+            @Override
+            public int read(byte[] b, int off, int len) throws IOException {
+                return in.read(b, off, len);
+            }
+
+            @Override
+            public long skip(long n) throws IOException {
+                return in.skip(n);
+            }
+
+            @Override
+            public int available() throws IOException {
+                return in.available();
+            }
+
+            @Override
+            public void close() throws IOException {
+                if (open) {
+                    in.close();
+                    open = false;
+                    finalizeStream();
+                    if (deleteOnClose) {
+                        delete(path, false);
+                    }
+                }
+            }
+
+            @Override
+            public synchronized void mark(int readlimit) {
+                in.mark(readlimit);
+            }
+
+            @Override
+            public synchronized void reset() throws IOException {
+                in.reset();
+            }
+
+            @Override
+            public boolean markSupported() {
+                return in.markSupported();
+            }
+        }
+
+        private final class FTPOutputStream extends OutputStream {
+
+            private final String path;
+            private final OutputStream out;
+            private final boolean deleteOnClose;
+
+            private boolean open = true;
+
+            private FTPOutputStream(String path, OutputStream out, boolean deleteOnClose) {
+                this.path = path;
+                this.out = out;
+                this.deleteOnClose = deleteOnClose;
+            }
+
+            @Override
+            public void write(int b) throws IOException {
+                out.write(b);
+            }
+
+            @Override
+            public void write(byte[] b) throws IOException {
+                out.write(b);
+            }
+
+            @Override
+            public void write(byte[] b, int off, int len) throws IOException {
+                out.write(b, off, len);
+            }
+
+            @Override
+            public void flush() throws IOException {
+                out.flush();
+            }
+
+            @Override
+            public void close() throws IOException {
+                if (open) {
+                    out.close();
+                    open = false;
+                    finalizeStream();
+                    if (deleteOnClose) {
+                        delete(path, false);
+                    }
+                }
+            }
+        }
+    }
+}

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/FTPSFileSystem.java

@@ -0,0 +1,653 @@
+package org.xbib.files.ftp.fs;
+
+import org.xbib.files.ftp.FTPFile;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URI;
+import java.nio.channels.SeekableByteChannel;
+import java.nio.file.AccessDeniedException;
+import java.nio.file.AccessMode;
+import java.nio.file.CopyOption;
+import java.nio.file.DirectoryNotEmptyException;
+import java.nio.file.DirectoryStream;
+import java.nio.file.DirectoryStream.Filter;
+import java.nio.file.FileAlreadyExistsException;
+import java.nio.file.FileStore;
+import java.nio.file.LinkOption;
+import java.nio.file.NoSuchFileException;
+import java.nio.file.NotLinkException;
+import java.nio.file.OpenOption;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
+import java.nio.file.attribute.FileAttribute;
+import java.nio.file.attribute.FileTime;
+import java.nio.file.attribute.GroupPrincipal;
+import java.nio.file.attribute.PosixFileAttributes;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.UserPrincipal;
+import java.time.ZonedDateTime;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * An FTPS file system.
+ */
+public class FTPSFileSystem extends FTPFileSystem {
+
+    private FTPSClientPool clientPool;
+
+    public FTPSFileSystem(FTPSFileSystemProvider provider, URI uri, FTPEnvironment env) throws IOException {
+        super(provider, uri, env);
+    }
+
+    protected void init() throws IOException {
+        this.rootDirectories = Collections.<Path>singleton(new FTPPath(this, "/"));
+        this.fileStore = new FTPFileStore(this);
+        this.fileStores = Collections.<FileStore>singleton(fileStore);
+        this.clientPool = new FTPSClientPool(uri.getHost(), uri.getPort(), env);
+        try (FTPSClientPool.Client client = clientPool.get()) {
+            this.defaultDirectory = client.pwd();
+            this.ftpFileStrategy = FTPFileStrategy.getInstance(client);
+        }
+    }
+
+    public static String getFileName(FTPFile ftpFile) {
+        String fileName = ftpFile.getName();
+        if (fileName == null) {
+            return null;
+        }
+        int index = fileName.lastIndexOf('/');
+        return index == -1 || index == fileName.length() - 1 ? fileName : fileName.substring(index + 1);
+    }
+
+    @Override
+    public void keepAlive() throws IOException {
+        clientPool.keepAlive();
+    }
+
+    @Override
+    public FTPPath toRealPath(FTPPath path, LinkOption... options) throws IOException {
+        boolean followLinks = LinkOptionSupport.followLinks(options);
+        try (FTPClientPool.Client client = clientPool.get()) {
+            return toRealPath(client, path, followLinks).ftpPath;
+        }
+    }
+
+    private FTPPathAndFilePair toRealPath(FTPClientPool.Client client, FTPPath path, boolean followLinks) throws IOException {
+        FTPPath absPath = toAbsolutePath(path).normalize();
+        // call getFTPFile to verify the file exists
+        FTPFile ftpFile = getFTPFile(client, absPath);
+
+        if (followLinks && isPossibleSymbolicLink(ftpFile)) {
+            FTPFile link = getLink(client, ftpFile, absPath);
+            if (link != null) {
+                return toRealPath(client, new FTPPath(this, link.getLink()), followLinks);
+            }
+        }
+        return new FTPPathAndFilePair(absPath, ftpFile);
+    }
+
+    private boolean isPossibleSymbolicLink(FTPFile ftpFile) {
+        return ftpFile.isSymbolicLink() || (ftpFile.isDirectory() && CURRENT_DIR.equals(getFileName(ftpFile)));
+    }
+
+    public InputStream newInputStream(FTPPath path, OpenOption... options) throws IOException {
+        OpenOptions openOptions = OpenOptions.forNewInputStream(options);
+        try (FTPClientPool.Client client = clientPool.get()) {
+            return newInputStream(client, path, openOptions);
+        }
+    }
+
+    private InputStream newInputStream(FTPClientPool.Client client, FTPPath path, OpenOptions options) throws IOException {
+        assert options.read;
+
+        return client.newInputStream(path.path(), options);
+    }
+
+    public OutputStream newOutputStream(FTPPath path, OpenOption... options) throws IOException {
+        OpenOptions openOptions = OpenOptions.forNewOutputStream(options);
+
+        try (FTPClientPool.Client client = clientPool.get()) {
+            return newOutputStream(client, path, false, openOptions).out;
+        }
+    }
+
+    private FTPFileAndOutputStreamPair newOutputStream(FTPClientPool.Client client, FTPPath path, boolean requireFTPFile, OpenOptions options) throws IOException {
+
+        // retrieve the file unless create is true and createNew is false, because then the file can be created
+        FTPFile ftpFile = null;
+        if (!options.create || options.createNew) {
+            ftpFile = findFTPFile(client, path);
+            if (ftpFile != null && ftpFile.isDirectory()) {
+                throw Messages.fileSystemProvider().isDirectory(path.path());
+            }
+            if (!options.createNew && ftpFile == null) {
+                throw new NoSuchFileException(path.path());
+            } else if (options.createNew && ftpFile != null) {
+                throw new FileAlreadyExistsException(path.path());
+            }
+        }
+        // else the file can be created if necessary
+
+        if (ftpFile == null && requireFTPFile) {
+            ftpFile = findFTPFile(client, path);
+        }
+
+        OutputStream out = client.newOutputStream(path.path(), options);
+        return new FTPFileAndOutputStreamPair(ftpFile, out);
+    }
+
+    public SeekableByteChannel newByteChannel(FTPPath path, Set<? extends OpenOption> options, FileAttribute<?>... attrs) throws IOException {
+        if (attrs.length > 0) {
+            throw Messages.fileSystemProvider().unsupportedCreateFileAttribute(attrs[0].name());
+        }
+
+        OpenOptions openOptions = OpenOptions.forNewByteChannel(options);
+
+        try (FTPClientPool.Client client = clientPool.get()) {
+            if (openOptions.read) {
+                // use findFTPFile instead of getFTPFile, to let the opening of the stream provide the correct error message
+                FTPFile ftpFile = findFTPFile(client, path);
+                InputStream in = newInputStream(client, path, openOptions);
+                long size = ftpFile == null ? 0 : ftpFile.getSize();
+                return FileSystemProviderSupport.createSeekableByteChannel(in, size);
+            }
+
+            // if append then we need the FTP file, to find the initial position of the channel
+            boolean requireFTPFile = openOptions.append;
+            FTPFileAndOutputStreamPair outPair = newOutputStream(client, path, requireFTPFile, openOptions);
+            long initialPosition = outPair.ftpFile == null ? 0 : outPair.ftpFile.getSize();
+            return FileSystemProviderSupport.createSeekableByteChannel(outPair.out, initialPosition);
+        }
+    }
+
+    public DirectoryStream<Path> newDirectoryStream(final FTPPath path, Filter<? super Path> filter) throws IOException {
+        List<FTPFile> children;
+        try (FTPClientPool.Client client = clientPool.get()) {
+            children = ftpFileStrategy.getChildren(client, path);
+        }
+        return new FTPPathDirectoryStream(path, children, filter);
+    }
+
+    public void createDirectory(FTPPath path, FileAttribute<?>... attrs) throws IOException {
+        if (attrs.length > 0) {
+            throw Messages.fileSystemProvider().unsupportedCreateFileAttribute(attrs[0].name());
+        }
+        try (FTPClientPool.Client client = clientPool.get()) {
+            client.mkdir(path.path());
+        }
+    }
+
+    public void delete(FTPPath path) throws IOException {
+        try (FTPClientPool.Client client = clientPool.get()) {
+            FTPFile ftpFile = getFTPFile(client, path);
+            boolean isDirectory = ftpFile.isDirectory();
+            client.delete(path.path(), isDirectory);
+        }
+    }
+
+    public FTPPath readSymbolicLink(FTPPath path) throws IOException {
+        try (FTPClientPool.Client client = clientPool.get()) {
+            FTPFile ftpFile = getFTPFile(client, path);
+            FTPFile link = getLink(client, ftpFile, path);
+            if (link == null) {
+                throw new NotLinkException(path.path());
+            }
+            return path.resolveSibling(link.getLink());
+        }
+    }
+
+    public void copy(FTPPath source, FTPPath target, CopyOption... options) throws IOException {
+        boolean sameFileSystem = source.getFileSystem() == target.getFileSystem();
+        CopyOptions copyOptions = CopyOptions.forCopy(options);
+
+        try (FTPClientPool.Client client = clientPool.get()) {
+            // get the FTP file to determine whether a directory needs to be created or a file needs to be copied
+            // Files.copy specifies that for links, the final target must be copied
+            FTPPathAndFilePair sourcePair = toRealPath(client, source, true);
+
+            if (!sameFileSystem) {
+                copyAcrossFileSystems(client, source, sourcePair.ftpFile, target, copyOptions);
+                return;
+            }
+
+            try {
+                if (sourcePair.ftpPath.path().equals(toRealPath(client, target, true).ftpPath.path())) {
+                    // non-op, don't do a thing as specified by Files.copy
+                    return;
+                }
+            } catch (NoSuchFileException e) {
+                // the target does not exist or either path is an invalid link, ignore the error and continue
+            }
+
+            FTPFile targetFtpFile = findFTPFile(client, target);
+
+            if (targetFtpFile != null) {
+                if (copyOptions.replaceExisting) {
+                    client.delete(target.path(), targetFtpFile.isDirectory());
+                } else {
+                    throw new FileAlreadyExistsException(target.path());
+                }
+            }
+
+            if (sourcePair.ftpFile.isDirectory()) {
+                client.mkdir(target.path());
+            } else {
+                try (FTPClientPool.Client client2 = clientPool.getOrCreate()) {
+                    copyFile(client, source, client2, target, copyOptions);
+                }
+            }
+        }
+    }
+
+    private void copyAcrossFileSystems(FTPClientPool.Client sourceClient, FTPPath source, FTPFile sourceFtpFile, FTPPath target, CopyOptions options)
+            throws IOException {
+        try (FTPClientPool.Client targetClient = target.getFileSystem().getClientPool().getOrCreate()) {
+            FTPFile targetFtpFile = findFTPFile(targetClient, target);
+            if (targetFtpFile != null) {
+                if (options.replaceExisting) {
+                    targetClient.delete(target.path(), targetFtpFile.isDirectory());
+                } else {
+                    throw new FileAlreadyExistsException(target.path());
+                }
+            }
+            if (sourceFtpFile.isDirectory()) {
+                sourceClient.mkdir(target.path());
+            } else {
+                copyFile(sourceClient, source, targetClient, target, options);
+            }
+        }
+    }
+
+    private void copyFile(FTPClientPool.Client sourceClient, FTPPath source, FTPClientPool.Client targetClient, FTPPath target, CopyOptions options) throws IOException {
+        OpenOptions inOptions = OpenOptions.forNewInputStream(options.toOpenOptions(StandardOpenOption.READ));
+        OpenOptions outOptions = OpenOptions
+                .forNewOutputStream(options.toOpenOptions(StandardOpenOption.WRITE, StandardOpenOption.CREATE));
+        try (InputStream in = sourceClient.newInputStream(source.path(), inOptions)) {
+            targetClient.storeFile(target.path(), in, outOptions, outOptions.options);
+        }
+    }
+
+    public  void move(FTPPath source, FTPPath target, CopyOption... options) throws IOException {
+        boolean sameFileSystem = source.getFileSystem() == target.getFileSystem();
+        CopyOptions copyOptions = CopyOptions.forMove(sameFileSystem, options);
+
+        try (FTPClientPool.Client client = clientPool.get()) {
+            if (!sameFileSystem) {
+                FTPFile ftpFile = getFTPFile(client, source);
+                if (getLink(client, ftpFile, source) != null) {
+                    throw new IOException(FTPMessages.copyOfSymbolicLinksAcrossFileSystemsNotSupported());
+                }
+                copyAcrossFileSystems(client, source, ftpFile, target, copyOptions);
+                client.delete(source.path(), ftpFile.isDirectory());
+                return;
+            }
+
+            try {
+                if (isSameFile(client, source, target)) {
+                    // non-op, don't do a thing as specified by Files.move
+                    return;
+                }
+            } catch (NoSuchFileException e) {
+                // the source or target does not exist or either path is an invalid link
+                // call getFTPFile to ensure the source file exists
+                // ignore any error to target or if the source link is invalid
+                getFTPFile(client, source);
+            }
+
+            if (toAbsolutePath(source).parentPath() == null) {
+                // cannot move or rename the root
+                throw new DirectoryNotEmptyException(source.path());
+            }
+
+            FTPFile targetFTPFile = findFTPFile(client, target);
+            if (copyOptions.replaceExisting && targetFTPFile != null) {
+                client.delete(target.path(), targetFTPFile.isDirectory());
+            }
+
+            client.rename(source.path(), target.path());
+        }
+    }
+
+    public  boolean isSameFile(FTPPath path, FTPPath path2) throws IOException {
+        if (path.getFileSystem() != path2.getFileSystem()) {
+            return false;
+        }
+        if (path.equals(path2)) {
+            return true;
+        }
+        try (FTPClientPool.Client client = clientPool.get()) {
+            return isSameFile(client, path, path2);
+        }
+    }
+
+    private boolean isSameFile(FTPClientPool.Client client, FTPPath path, FTPPath path2) throws IOException {
+        if (path.equals(path2)) {
+            return true;
+        }
+        return toRealPath(client, path, true).ftpPath.path().equals(toRealPath(client, path2, true).ftpPath.path());
+    }
+
+    public boolean isHidden(FTPPath path) throws IOException {
+        // call getFTPFile to check for existence
+        try (FTPClientPool.Client client = clientPool.get()) {
+            getFTPFile(client, path);
+        }
+        String fileName = path.fileName();
+        return !CURRENT_DIR.equals(fileName) && !PARENT_DIR.equals(fileName) &&
+                fileName != null && fileName.startsWith(".");
+    }
+
+    public FileStore getFileStore(FTPPath path) throws IOException {
+        // call getFTPFile to check existence of the path
+        try (FTPClientPool.Client client = clientPool.get()) {
+            getFTPFile(client, path);
+        }
+        return fileStore;
+    }
+
+    public void checkAccess(FTPPath path, AccessMode... modes) throws IOException {
+        try (FTPClientPool.Client client = clientPool.get()) {
+            FTPFile ftpFile = getFTPFile(client, path);
+            for (AccessMode mode : modes) {
+                if (!hasAccess(ftpFile, mode)) {
+                    throw new AccessDeniedException(path.path());
+                }
+            }
+        }
+    }
+
+    private boolean hasAccess(FTPFile ftpFile, AccessMode mode) {
+        return switch (mode) {
+            case READ -> ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.READ_PERMISSION);
+            case WRITE -> ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.WRITE_PERMISSION);
+            case EXECUTE -> ftpFile.hasPermission(FTPFile.USER_ACCESS, FTPFile.EXECUTE_PERMISSION);
+        };
+    }
+
+    public PosixFileAttributes readAttributes(FTPPath path, LinkOption... options) throws IOException {
+        boolean followLinks = LinkOptionSupport.followLinks(options);
+        try (FTPClientPool.Client client = clientPool.get()) {
+            FTPPathAndFilePair pair = toRealPath(client, path, followLinks);
+            ZonedDateTime lastModified = client.mdtm(pair.ftpPath.path());
+            FTPFile link = followLinks ? null : getLink(client, pair.ftpFile, path);
+            FTPFile ftpFile = link == null ? pair.ftpFile : link;
+            return new FTPPathFileAttributes(ftpFile, lastModified);
+        }
+    }
+
+    public Map<String, Object> readAttributes(FTPPath path, String attributes, LinkOption... options) throws IOException {
+        String view;
+        int pos = attributes.indexOf(':');
+        if (pos == -1) {
+            view = "basic";
+            attributes = "basic:" + attributes;
+        } else {
+            view = attributes.substring(0, pos);
+        }
+        if (!SUPPORTED_FILE_ATTRIBUTE_VIEWS.contains(view)) {
+            throw Messages.fileSystemProvider().unsupportedFileAttributeView(view);
+        }
+        Set<String> allowedAttributes;
+        if (attributes.startsWith("basic:")) {
+            allowedAttributes = BASIC_ATTRIBUTES;
+        } else if (attributes.startsWith("owner:")) {
+            allowedAttributes = OWNER_ATTRIBUTES;
+        } else if (attributes.startsWith("posix:")) {
+            allowedAttributes = POSIX_ATTRIBUTES;
+        } else {
+            // should not occur
+            throw Messages.fileSystemProvider().unsupportedFileAttributeView(attributes.substring(0, attributes.indexOf(':')));
+        }
+        Map<String, Object> result = getAttributeMap(attributes, allowedAttributes);
+        PosixFileAttributes posixAttributes = readAttributes(path, options);
+        for (Map.Entry<String, Object> entry : result.entrySet()) {
+            switch (entry.getKey()) {
+                case "basic:lastModifiedTime":
+                case "posix:lastModifiedTime":
+                    entry.setValue(posixAttributes.lastModifiedTime());
+                    break;
+                case "basic:lastAccessTime":
+                case "posix:lastAccessTime":
+                    entry.setValue(posixAttributes.lastAccessTime());
+                    break;
+                case "basic:creationTime":
+                case "posix:creationTime":
+                    entry.setValue(posixAttributes.creationTime());
+                    break;
+                case "basic:size":
+                case "posix:size":
+                    entry.setValue(posixAttributes.size());
+                    break;
+                case "basic:isRegularFile":
+                case "posix:isRegularFile":
+                    entry.setValue(posixAttributes.isRegularFile());
+                    break;
+                case "basic:isDirectory":
+                case "posix:isDirectory":
+                    entry.setValue(posixAttributes.isDirectory());
+                    break;
+                case "basic:isSymbolicLink":
+                case "posix:isSymbolicLink":
+                    entry.setValue(posixAttributes.isSymbolicLink());
+                    break;
+                case "basic:isOther":
+                case "posix:isOther":
+                    entry.setValue(posixAttributes.isOther());
+                    break;
+                case "basic:fileKey":
+                case "posix:fileKey":
+                    entry.setValue(posixAttributes.fileKey());
+                    break;
+                case "owner:owner":
+                case "posix:owner":
+                    entry.setValue(posixAttributes.owner());
+                    break;
+                case "posix:group":
+                    entry.setValue(posixAttributes.group());
+                    break;
+                case "posix:permissions":
+                    entry.setValue(posixAttributes.permissions());
+                    break;
+                default:
+                    // should not occur
+                    throw new IllegalStateException("unexpected attribute name: " + entry.getKey());
+            }
+        }
+        return result;
+    }
+
+    private Map<String, Object> getAttributeMap(String attributes, Set<String> allowedAttributes) {
+        int indexOfColon = attributes.indexOf(':');
+        String prefix = attributes.substring(0, indexOfColon + 1);
+        attributes = attributes.substring(indexOfColon + 1);
+
+        String[] attributeList = attributes.split(",");
+        Map<String, Object> result = new HashMap<>(allowedAttributes.size());
+
+        for (String attribute : attributeList) {
+            String prefixedAttribute = prefix + attribute;
+            if (allowedAttributes.contains(prefixedAttribute)) {
+                result.put(prefixedAttribute, null);
+            } else if ("*".equals(attribute)) {
+                for (String s : allowedAttributes) {
+                    result.put(s, null);
+                }
+            } else {
+                throw Messages.fileSystemProvider().unsupportedFileAttribute(attribute);
+            }
+        }
+        return result;
+    }
+
+    public FTPFile getFTPFile(FTPPath path) throws IOException {
+        try (FTPClientPool.Client client = clientPool.get()) {
+            return getFTPFile(client, path);
+        }
+    }
+
+    private FTPFile getFTPFile(FTPClientPool.Client client, FTPPath path) throws IOException {
+        return ftpFileStrategy.getFTPFile(client, path);
+    }
+
+    private FTPFile findFTPFile(FTPClientPool.Client client, FTPPath path) throws IOException {
+        try {
+            return getFTPFile(client, path);
+        } catch (NoSuchFileException e) {
+            return null;
+        }
+    }
+
+    private FTPFile getLink(FTPClientPool.Client client, FTPFile ftpFile, FTPPath path) throws IOException {
+        return ftpFileStrategy.getLink(client, ftpFile, path);
+    }
+
+    private static final class FTPPathAndFilePair {
+        private final FTPPath ftpPath;
+        private final FTPFile ftpFile;
+
+        private FTPPathAndFilePair(FTPPath ftpPath, FTPFile ftpFile) {
+            this.ftpPath = ftpPath;
+            this.ftpFile = ftpFile;
+        }
+    }
+
+    private static final class FTPFileAndOutputStreamPair {
+
+        private final FTPFile ftpFile;
+        private final OutputStream out;
+
+        private FTPFileAndOutputStreamPair(FTPFile ftpFile, OutputStream out) {
+            this.ftpFile = ftpFile;
+            this.out = out;
+        }
+    }
+
+    private static final class FTPPathDirectoryStream extends AbstractDirectoryStream<Path> {
+
+        private final FTPPath path;
+        private final List<FTPFile> files;
+        private Iterator<FTPFile> iterator;
+
+        private FTPPathDirectoryStream(FTPPath path, List<FTPFile> files, Filter<? super Path> filter) {
+            super(filter);
+            this.path = path;
+            this.files = files;
+        }
+
+        @Override
+        protected void setupIteration() {
+            iterator = files.iterator();
+        }
+
+        @Override
+        protected Path getNext() throws IOException {
+            return iterator.hasNext() ? path.resolve(getFileName(iterator.next())) : null;
+        }
+    }
+
+    private static final class FTPPathFileAttributes implements PosixFileAttributes {
+
+        private static final FileTime EPOCH = FileTime.fromMillis(0L);
+
+        private final FTPFile ftpFile;
+        private final FileTime lastModified;
+
+        private FTPPathFileAttributes(FTPFile ftpFile, ZonedDateTime lastModified) {
+            this.ftpFile = ftpFile;
+            if (lastModified == null) {
+                ZonedDateTime timestamp = ftpFile.getTimestamp();
+                this.lastModified = timestamp == null ? EPOCH : FileTime.from(timestamp.toInstant());
+            } else {
+                this.lastModified = FileTime.from(lastModified.toInstant());
+            }
+        }
+
+        @Override
+        public UserPrincipal owner() {
+            String user = ftpFile.getUser();
+            return user == null ? null : new SimpleUserPrincipal(user);
+        }
+
+        @Override
+        public GroupPrincipal group() {
+            String group = ftpFile.getGroup();
+            return group == null ? null : new SimpleGroupPrincipal(group);
+        }
+
+        @Override
+        public Set<PosixFilePermission> permissions() {
+            Set<PosixFilePermission> permissions = EnumSet.noneOf(PosixFilePermission.class);
+            addPermissionIfSet(ftpFile, FTPFile.USER_ACCESS, FTPFile.READ_PERMISSION, PosixFilePermission.OWNER_READ, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.USER_ACCESS, FTPFile.WRITE_PERMISSION, PosixFilePermission.OWNER_WRITE, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.USER_ACCESS, FTPFile.EXECUTE_PERMISSION, PosixFilePermission.OWNER_EXECUTE, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.GROUP_ACCESS, FTPFile.READ_PERMISSION, PosixFilePermission.GROUP_READ, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.GROUP_ACCESS, FTPFile.WRITE_PERMISSION, PosixFilePermission.GROUP_WRITE, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.GROUP_ACCESS, FTPFile.EXECUTE_PERMISSION, PosixFilePermission.GROUP_EXECUTE, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.WORLD_ACCESS, FTPFile.READ_PERMISSION, PosixFilePermission.OTHERS_READ, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.WORLD_ACCESS, FTPFile.WRITE_PERMISSION, PosixFilePermission.OTHERS_WRITE, permissions);
+            addPermissionIfSet(ftpFile, FTPFile.WORLD_ACCESS, FTPFile.EXECUTE_PERMISSION, PosixFilePermission.OTHERS_EXECUTE, permissions);
+            return permissions;
+        }
+
+        private void addPermissionIfSet(FTPFile ftpFile, int access, int permission, PosixFilePermission value,
+                                        Set<PosixFilePermission> permissions) {
+
+            if (ftpFile.hasPermission(access, permission)) {
+                permissions.add(value);
+            }
+        }
+
+        @Override
+        public FileTime lastModifiedTime() {
+            return lastModified;
+        }
+
+        @Override
+        public FileTime lastAccessTime() {
+            return lastModifiedTime();
+        }
+
+        @Override
+        public FileTime creationTime() {
+            return lastModifiedTime();
+        }
+
+        @Override
+        public boolean isRegularFile() {
+            return ftpFile.isFile();
+        }
+
+        @Override
+        public boolean isDirectory() {
+            return ftpFile.isDirectory();
+        }
+
+        @Override
+        public boolean isSymbolicLink() {
+            return ftpFile.isSymbolicLink();
+        }
+
+        @Override
+        public boolean isOther() {
+            return false;
+        }
+
+        @Override
+        public long size() {
+            return ftpFile.getSize();
+        }
+
+        @Override
+        public Object fileKey() {
+            return null;
+        }
+    }
+}

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/FTPSFileSystemProvider.java

@@ -0,0 +1,512 @@
+package org.xbib.files.ftp.fs;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URI;
+import java.nio.channels.SeekableByteChannel;
+import java.nio.file.AccessMode;
+import java.nio.file.CopyOption;
+import java.nio.file.DirectoryStream;
+import java.nio.file.DirectoryStream.Filter;
+import java.nio.file.FileStore;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystemAlreadyExistsException;
+import java.nio.file.FileSystemNotFoundException;
+import java.nio.file.Files;
+import java.nio.file.LinkOption;
+import java.nio.file.OpenOption;
+import java.nio.file.Path;
+import java.nio.file.ProviderMismatchException;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.attribute.BasicFileAttributeView;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.nio.file.attribute.FileAttribute;
+import java.nio.file.attribute.FileAttributeView;
+import java.nio.file.attribute.FileOwnerAttributeView;
+import java.nio.file.attribute.FileTime;
+import java.nio.file.attribute.GroupPrincipal;
+import java.nio.file.attribute.PosixFileAttributeView;
+import java.nio.file.attribute.PosixFileAttributes;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.UserPrincipal;
+import java.nio.file.spi.FileSystemProvider;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * A provider for FTPS file systems.
+ */
+public class FTPSFileSystemProvider extends FTPFileSystemProvider {
+
+    private final Map<URI, FTPSFileSystem> fileSystems = new HashMap<>();
+
+    private static FTPPath toFTPPath(Path path) {
+        Objects.requireNonNull(path);
+        if (path instanceof FTPPath) {
+            return (FTPPath) path;
+        }
+        throw new ProviderMismatchException();
+    }
+
+    /**
+     * Send a keep-alive signal for an FTP file system.
+     *
+     * @param fs The FTP file system to send a keep-alive signal for.
+     * @throws ProviderMismatchException If the given file system is not an FTP file system
+     * (not created by an {@code FTPFileSystemProvider}).
+     * @throws IOException               If an I/O error occurred.
+     */
+    public static void keepAlive(FileSystem fs) throws IOException {
+        if (fs instanceof FTPSFileSystem) {
+            ((FTPSFileSystem) fs).keepAlive();
+        }
+        throw new ProviderMismatchException();
+    }
+
+    /**
+     * Returns the URI scheme that identifies this provider: {@code ftps}.
+     */
+    @Override
+    public String getScheme() {
+        return "ftps";
+    }
+
+    /**
+     * Constructs a new {@code FileSystem} object identified by a URI.
+     * <p>
+     * The URI must have a {@link URI#getScheme() scheme} equal to {@link #getScheme()},
+     * and no {@link URI#getUserInfo() user information},
+     * {@link URI#getPath() path}, {@link URI#getQuery() query} or {@link URI#getFragment() fragment}.
+     * Authentication credentials must be set through
+     * the given environment map, preferably through {@link FTPEnvironment}.
+     * <p>
+     * This provider allows multiple file systems per host, but only one file system per user on a host.
+     * Once a file system is {@link FileSystem#close() closed}, this provider allows a new file system
+     * to be created with the same URI and credentials
+     * as the closed file system.
+     */
+    @Override
+    public FileSystem newFileSystem(URI uri, Map<String, ?> env) throws IOException {
+        // user info must come from the environment map
+        checkURI(uri, false, false);
+        FTPEnvironment environment = wrapEnvironment(env);
+        String username = environment.getUsername();
+        URI normalizedURI = normalizeWithUsername(uri, username);
+        synchronized (fileSystems) {
+            if (fileSystems.containsKey(normalizedURI)) {
+                throw new FileSystemAlreadyExistsException(normalizedURI.toString());
+            }
+            FTPSFileSystem fs = new FTPSFileSystem(this, normalizedURI, environment);
+            fileSystems.put(normalizedURI, fs);
+            return fs;
+        }
+    }
+
+    FTPEnvironment wrapEnvironment(Map<String, ?> env) {
+        return FTPEnvironment.wrap(env);
+    }
+
+    /**
+     * Returns an existing {@code FileSystem} created by this provider.
+     * The URI must have a {@link URI#getScheme() scheme} equal to {@link #getScheme()},
+     * and no {@link URI#getPath() path},
+     * {@link URI#getQuery() query} or {@link URI#getFragment() fragment}.
+     * Because the original credentials were provided through an environment map,
+     * the URI can contain {@link URI#getUserInfo() user information}, although this should not
+     * contain a password for security reasons.
+     * Once a file system is {@link FileSystem#close() closed},
+     * this provided will throw a {@link FileSystemNotFoundException}.
+     */
+    @Override
+    public FileSystem getFileSystem(URI uri) {
+        checkURI(uri, true, false);
+        return getExistingFileSystem(uri);
+    }
+
+    /**
+     * Return a {@code Path} object by converting the given {@link URI}. The resulting {@code Path}
+     * is associated with a {@link FileSystem} that
+     * already exists. This method does not support constructing {@code FileSystem}s automatically.
+     * <p>
+     * The URI must have a {@link URI#getScheme() scheme} equal to {@link #getScheme()},
+     * and no {@link URI#getQuery() query} or
+     * {@link URI#getFragment() fragment}. Because the original credentials were provided through an environment map,
+     * the URI can contain {@link URI#getUserInfo() user information},
+     * although this should not contain a password for security reasons.
+     */
+    @Override
+    public Path getPath(URI uri) {
+        checkURI(uri, true, true);
+        FTPSFileSystem fs = getExistingFileSystem(uri);
+        return fs.getPath(uri.getPath());
+    }
+
+    private FTPSFileSystem getExistingFileSystem(URI uri) {
+        URI normalizedURI = normalizeWithoutPassword(uri);
+        synchronized (fileSystems) {
+            FTPSFileSystem fs = fileSystems.get(normalizedURI);
+            if (fs == null) {
+                throw new FileSystemNotFoundException(uri.toString());
+            }
+            return fs;
+        }
+    }
+
+    private void checkURI(URI uri, boolean allowUserInfo, boolean allowPath) {
+        if (!uri.isAbsolute()) {
+            throw Messages.uri().notAbsolute(uri);
+        }
+        if (!getScheme().equalsIgnoreCase(uri.getScheme())) {
+            throw Messages.uri().invalidScheme(uri, getScheme());
+        }
+        if (!allowUserInfo && uri.getUserInfo() != null && !uri.getUserInfo().isEmpty()) {
+            throw Messages.uri().hasUserInfo(uri);
+        }
+        if (uri.isOpaque()) {
+            throw Messages.uri().notHierarchical(uri);
+        }
+        if (!allowPath && uri.getPath() != null && !uri.getPath().isEmpty()) {
+            throw Messages.uri().hasPath(uri);
+        }
+        if (uri.getQuery() != null && !uri.getQuery().isEmpty()) {
+            throw Messages.uri().hasQuery(uri);
+        }
+        if (uri.getFragment() != null && !uri.getFragment().isEmpty()) {
+            throw Messages.uri().hasFragment(uri);
+        }
+    }
+
+    void removeFileSystem(URI uri) {
+        URI normalizedURI = normalizeWithoutPassword(uri);
+        synchronized (fileSystems) {
+            fileSystems.remove(normalizedURI);
+        }
+    }
+
+    private URI normalizeWithoutPassword(URI uri) {
+        String userInfo = uri.getUserInfo();
+        if (userInfo == null && uri.getPath() == null && uri.getQuery() == null && uri.getFragment() == null) {
+            // nothing to normalize, return the URI
+            return uri;
+        }
+        String username = null;
+        if (userInfo != null) {
+            int index = userInfo.indexOf(':');
+            username = index == -1 ? userInfo : userInfo.substring(0, index);
+        }
+        // no path, query or fragment
+        return URISupport.create(uri.getScheme(), username, uri.getHost(), uri.getPort(), null, null, null);
+    }
+
+    private URI normalizeWithUsername(URI uri, String username) {
+        if (username == null && uri.getUserInfo() == null && uri.getPath() == null && uri.getQuery() == null && uri.getFragment() == null) {
+            // nothing to normalize or add, return the URI
+            return uri;
+        }
+        // no path, query or fragment
+        return URISupport.create(uri.getScheme(), username, uri.getHost(), uri.getPort(), null, null, null);
+    }
+
+    /**
+     * Opens a file, returning an input stream to read from the file.
+     * This method works in exactly the manner specified by the {@link Files#newInputStream(Path, OpenOption...)} method.
+     * <p>
+     * In addition to the standard open options, this method also supports single occurrences of each of
+     * {@link FileType}, {@link FileStructure} and
+     * {@link FileTransferMode}. These three option types, with defaults of {@link FileType#binary()},
+     * {@link FileStructure#FILE} and
+     * {@link FileTransferMode#STREAM}, persist for all calls that support file transfers:
+     * <ul>
+     * <li>{@link #newInputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newOutputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newByteChannel(Path, Set, FileAttribute...)}</li>
+     * <li>{@link #copy(Path, Path, CopyOption...)}</li>
+     * <li>{@link #move(Path, Path, CopyOption...)}</li>
+     * </ul>
+     * <p>
+     * Note: while the returned input stream is not closed, the path's file system will have
+     * one available connection fewer.
+     * It is therefore essential that the input stream is closed as soon as possible.
+     */
+    @Override
+    public InputStream newInputStream(Path path, OpenOption... options) throws IOException {
+        return toFTPPath(path).newInputStream(options);
+    }
+
+    /**
+     * Opens or creates a file, returning an output stream that may be used to write bytes to the file.
+     * This method works in exactly the manner specified by the {@link Files#newOutputStream(Path, OpenOption...)} method.
+     * <p>
+     * In addition to the standard open options, this method also supports single occurrences of each of
+     * {@link FileType}, {@link FileStructure} and
+     * {@link FileTransferMode}. These three option types, with defaults of {@link FileType#binary()},
+     * {@link FileStructure#FILE} and
+     * {@link FileTransferMode#STREAM}, persist for all calls that support file transfers:
+     * <ul>
+     * <li>{@link #newInputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newOutputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newByteChannel(Path, Set, FileAttribute...)}</li>
+     * <li>{@link #copy(Path, Path, CopyOption...)}</li>
+     * <li>{@link #move(Path, Path, CopyOption...)}</li>
+     * </ul>
+     * <p>
+     * Note: while the returned output stream is not closed, the path's file system will have one available
+     * connection fewer.
+     * It is therefore essential that the output stream is closed as soon as possible.
+     */
+    @Override
+    public OutputStream newOutputStream(Path path, OpenOption... options) throws IOException {
+        return toFTPPath(path).newOutputStream(options);
+    }
+
+    /**
+     * Opens or creates a file, returning a seekable byte channel to access the file.
+     * This method works in exactly the manner specified by the
+     * {@link Files#newByteChannel(Path, Set, FileAttribute...)} method.
+     * <p>
+     * In addition to the standard open options, this method also supports single occurrences of
+     * each of {@link FileType}, {@link FileStructure} and
+     * {@link FileTransferMode}. These three option types, with defaults of {@link FileType#binary()},
+     * {@link FileStructure#FILE} and
+     * {@link FileTransferMode#STREAM}, persist for all calls that support file transfers:
+     * <ul>
+     * <li>{@link #newInputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newOutputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newByteChannel(Path, Set, FileAttribute...)}</li>
+     * <li>{@link #copy(Path, Path, CopyOption...)}</li>
+     * <li>{@link #move(Path, Path, CopyOption...)}</li>
+     * </ul>
+     * <p>
+     * This method does not support any file attributes to be set. If any file attributes are given,
+     * an {@link UnsupportedOperationException} will be
+     * thrown.
+     * <p>
+     * Note: while the returned channel is not closed, the path's file system will have one available connection fewer.
+     * It is therefore essential that the channel is closed as soon as possible.
+     */
+    @Override
+    public SeekableByteChannel newByteChannel(Path path, Set<? extends OpenOption> options,
+                                              FileAttribute<?>... attrs) throws IOException {
+        return toFTPPath(path).newByteChannel(options, attrs);
+    }
+
+    @Override
+    public DirectoryStream<Path> newDirectoryStream(Path dir, Filter<? super Path> filter) throws IOException {
+        return toFTPPath(dir).newDirectoryStream(filter);
+    }
+
+    /**
+     * Creates a new directory.
+     * This method works in exactly the manner specified by the
+     * {@link Files#createDirectory(Path, FileAttribute...)} method.
+     * <p>
+     * This method does not support any file attributes to be set.
+     * If any file attributes are given, an {@link UnsupportedOperationException} will be
+     * thrown.
+     */
+    @Override
+    public void createDirectory(Path dir, FileAttribute<?>... attrs) throws IOException {
+        toFTPPath(dir).createDirectory(attrs);
+    }
+
+    @Override
+    public void delete(Path path) throws IOException {
+        toFTPPath(path).delete();
+    }
+
+    @Override
+    public Path readSymbolicLink(Path link) throws IOException {
+        return toFTPPath(link).readSymbolicLink();
+    }
+
+    /**
+     * Copy a file to a target file.
+     * This method works in exactly the manner specified by the {@link Files#copy(Path, Path, CopyOption...)}
+     * method except that both the source and
+     * target paths must be associated with this provider.
+     * <p>
+     * In addition to the standard copy options, this method also supports single occurrences of each of
+     * {@link FileType}, {@link FileStructure} and
+     * {@link FileTransferMode}. These three option types, with defaults of {@link FileType#binary()},
+     * {@link FileStructure#FILE} and
+     * {@link FileTransferMode#STREAM}, persist for all calls that support file transfers:
+     * <ul>
+     * <li>{@link #newInputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newOutputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newByteChannel(Path, Set, FileAttribute...)}</li>
+     * <li>{@link #copy(Path, Path, CopyOption...)}</li>
+     * <li>{@link #move(Path, Path, CopyOption...)}</li>
+     * </ul>
+     * <p>
+     * {@link StandardCopyOption#COPY_ATTRIBUTES} and {@link StandardCopyOption#ATOMIC_MOVE} are not supported though.
+     */
+    @Override
+    public void copy(Path source, Path target, CopyOption... options) throws IOException {
+        toFTPPath(source).copy(toFTPPath(target), options);
+    }
+
+    /**
+     * Move or rename a file to a target file.
+     * This method works in exactly the manner specified by the {@link Files#move(Path, Path, CopyOption...)}
+     * method except that both the source and
+     * target paths must be associated with this provider.
+     * <p>
+     * In addition to the standard copy options, this method also supports single occurrences of each of
+     * {@link FileType}, {@link FileStructure} and
+     * {@link FileTransferMode}. These three option types, with defaults of {@link FileType#binary()},
+     * {@link FileStructure#FILE} and
+     * {@link FileTransferMode#STREAM}, persist for all calls that support file transfers:
+     * <ul>
+     * <li>{@link #newInputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newOutputStream(Path, OpenOption...)}</li>
+     * <li>{@link #newByteChannel(Path, Set, FileAttribute...)}</li>
+     * <li>{@link #copy(Path, Path, CopyOption...)}</li>
+     * <li>{@link #move(Path, Path, CopyOption...)}</li>
+     * </ul>
+     * <p>
+     * {@link StandardCopyOption#COPY_ATTRIBUTES} is not supported though.
+     * {@link StandardCopyOption#ATOMIC_MOVE} is only supported if the paths have
+     * the same file system.
+     */
+    @Override
+    public void move(Path source, Path target, CopyOption... options) throws IOException {
+        toFTPPath(source).move(toFTPPath(target), options);
+    }
+
+    @Override
+    public boolean isSameFile(Path path, Path path2) throws IOException {
+        return toFTPPath(path).isSameFile(path2);
+    }
+
+    @Override
+    public boolean isHidden(Path path) throws IOException {
+        return toFTPPath(path).isHidden();
+    }
+
+    @Override
+    public FileStore getFileStore(Path path) throws IOException {
+        return toFTPPath(path).getFileStore();
+    }
+
+    @Override
+    public void checkAccess(Path path, AccessMode... modes) throws IOException {
+        toFTPPath(path).checkAccess(modes);
+    }
+
+    /**
+     * Returns a file attribute view of a given type.
+     * This method works in exactly the manner specified by the
+     * {@link Files#getFileAttributeView(Path, Class, LinkOption...)} method.
+     * <p>
+     * This provider supports {@link BasicFileAttributeView}, {@link FileOwnerAttributeView} and
+     * {@link PosixFileAttributeView}.
+     * All other classes will result in a {@code null} return value.
+     * <p>
+     * Note that the returned {@link FileAttributeView} is read-only; any attempt to change any attributes
+     * through the view will result in an
+     * {@link UnsupportedOperationException} to be thrown.
+     */
+    @Override
+    public <V extends FileAttributeView> V getFileAttributeView(Path path, Class<V> type, LinkOption... options) {
+        Objects.requireNonNull(type);
+        if (type == BasicFileAttributeView.class) {
+            return type.cast(new AttributeView("basic", toFTPPath(path)));
+        }
+        if (type == FileOwnerAttributeView.class) {
+            return type.cast(new AttributeView("owner", toFTPPath(path)));
+        }
+        if (type == PosixFileAttributeView.class) {
+            return type.cast(new AttributeView("posix", toFTPPath(path)));
+        }
+        return null;
+    }
+
+    /**
+     * Reads a file's attributes as a bulk operation.
+     * This method works in exactly the manner specified by the
+     * {@link Files#readAttributes(Path, Class, LinkOption...)} method.
+     * This provider supports {@link BasicFileAttributes} and {@link PosixFileAttributes}
+     * (there is no {@code FileOwnerFileAttributes}).
+     * All other classes will result in an {@link UnsupportedOperationException} to be thrown.
+     */
+    @Override
+    public <A extends BasicFileAttributes> A readAttributes(Path path, Class<A> type, LinkOption... options)
+            throws IOException {
+        if (type == BasicFileAttributes.class || type == PosixFileAttributes.class) {
+            return type.cast(toFTPPath(path).readAttributes(options));
+        }
+        throw Messages.fileSystemProvider().unsupportedFileAttributesType(type);
+    }
+
+    /**
+     * Reads a set of file attributes as a bulk operation.
+     * This method works in exactly the manner specified by the {@link Files#readAttributes(Path, String, LinkOption...)} method.
+     * <p>
+     * This provider supports views {@code basic}, {@code owner} and {code posix}, where {@code basic} will be used if no view is given.
+     * All other views will result in an {@link UnsupportedOperationException} to be thrown.
+     */
+    @Override
+    public Map<String, Object> readAttributes(Path path, String attributes, LinkOption... options) throws IOException {
+        return toFTPPath(path).readAttributes(attributes, options);
+    }
+
+    /**
+     * Sets the value of a file attribute.
+     * This method works in exactly the manner specified by the {@link Files#setAttribute(Path, String, Object, LinkOption...)} method.
+     * <p>
+     * This provider does not support attributes for paths to be set. This method will always throw an {@link UnsupportedOperationException}.
+     */
+    @Override
+    public void setAttribute(Path path, String attribute, Object value, LinkOption... options) throws IOException {
+        throw Messages.unsupportedOperation(FileSystemProvider.class, "setAttribute");
+    }
+
+    private static final class AttributeView implements PosixFileAttributeView {
+
+        private final String name;
+        private final FTPPath path;
+
+        private AttributeView(String name, FTPPath path) {
+            this.name = Objects.requireNonNull(name);
+            this.path = Objects.requireNonNull(path);
+        }
+
+        @Override
+        public String name() {
+            return name;
+        }
+
+        @Override
+        public UserPrincipal getOwner() throws IOException {
+            return readAttributes().owner();
+        }
+
+        @Override
+        public void setOwner(UserPrincipal owner) throws IOException {
+            throw Messages.unsupportedOperation(FileOwnerAttributeView.class, "setOwner");
+        }
+
+        @Override
+        public PosixFileAttributes readAttributes() throws IOException {
+            return path.readAttributes();
+        }
+
+        @Override
+        public void setTimes(FileTime lastModifiedTime, FileTime lastAccessTime, FileTime createTime) throws IOException {
+            throw Messages.unsupportedOperation(BasicFileAttributeView.class, "setTimes");
+        }
+
+        @Override
+        public void setGroup(GroupPrincipal group) throws IOException {
+            throw Messages.unsupportedOperation(PosixFileAttributeView.class, "setGroup");
+        }
+
+        @Override
+        public void setPermissions(Set<PosixFilePermission> perms) throws IOException {
+            throw Messages.unsupportedOperation(PosixFileAttributeView.class, "setPermissions");
+        }
+    }
+}

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/spi/FTPSContext.java

@@ -0,0 +1,27 @@
+package org.xbib.files.ftp.fs.spi;
+
+import org.xbib.files.ftp.fs.FTPEnvironment;
+import org.xbib.files.ftp.fs.FTPSFileSystemProvider;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.net.URI;
+import java.nio.file.FileSystem;
+import java.util.Map;
+
+class FTPSContext implements Closeable {
+
+    final FTPSFileSystemProvider provider;
+
+    final FileSystem fileSystem;
+
+    FTPSContext(URI uri, Map<String, ?> env) throws IOException {
+        this.provider = new FTPSFileSystemProvider();
+        this.fileSystem = provider.newFileSystem(uri, env != null ? env : new FTPEnvironment());
+    }
+
+    @Override
+    public void close() throws IOException {
+        fileSystem.close();
+    }
+}

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/spi/FTPSFileService.java

@@ -0,0 +1,476 @@
+package org.xbib.files.ftp.fs.spi;
+
+import org.xbib.files.FileService;
+import org.xbib.files.FileWalker;
+import org.xbib.files.WrappedDirectoryStream;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URI;
+import java.nio.ByteBuffer;
+import java.nio.channels.Channels;
+import java.nio.channels.ReadableByteChannel;
+import java.nio.channels.WritableByteChannel;
+import java.nio.file.CopyOption;
+import java.nio.file.DirectoryStream;
+import java.nio.file.FileVisitOption;
+import java.nio.file.Files;
+import java.nio.file.LinkOption;
+import java.nio.file.OpenOption;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.nio.file.StandardOpenOption;
+import java.nio.file.attribute.FileAttribute;
+import java.nio.file.attribute.FileTime;
+import java.nio.file.attribute.PosixFileAttributeView;
+import java.nio.file.attribute.PosixFileAttributes;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.PosixFilePermissions;
+import java.time.Instant;
+import java.util.EnumSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Stream;
+
+public class FTPSFileService implements FileService {
+
+    private static final int BUFFER_SIZE = 128 * 1024;
+
+    private static final Set<PosixFilePermission> DEFAULT_DIR_PERMISSIONS =
+            PosixFilePermissions.fromString("rwxr-xr-x");
+
+    private static final Set<PosixFilePermission> DEFAULT_FILE_PERMISSIONS =
+            PosixFilePermissions.fromString("rw-r--r--");
+
+    private final URI uri;
+
+    private final Map<String, ?> env;
+
+    public FTPSFileService(URI uri, Map<String, ?> env) {
+        this.uri = uri;
+        this.env = env;
+    }
+
+    @Override
+    public Boolean exists(String path) throws IOException {
+        return performWithContext(ctx -> Files.exists(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public Boolean isExecutable(String path) throws IOException {
+        return performWithContext(ctx -> Files.isExecutable(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public Boolean isDirectory(String path) throws IOException {
+        return performWithContext(ctx -> Files.isDirectory(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public Boolean isRegularFile(String path) throws IOException {
+        return performWithContext(ctx -> Files.isRegularFile(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public Boolean isHidden(String path) throws IOException {
+        return performWithContext(ctx -> Files.isHidden(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public Boolean isSameFile(String path1, String path2) throws IOException {
+        return performWithContext(ctx -> Files.isSameFile(ctx.fileSystem.getPath(path1), ctx.fileSystem.getPath(path2)));
+    }
+
+    @Override
+    public Boolean isSymbolicLink(String path) throws IOException {
+        return performWithContext(ctx -> Files.isSymbolicLink(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public Boolean isReadable(String path) throws IOException {
+        return performWithContext(ctx -> Files.isReadable(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public Boolean isWritable(String path) throws IOException {
+        return performWithContext(ctx -> Files.isWritable(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public void createFile(String path, FileAttribute<?>... attributes) throws IOException {
+        performWithContext(ctx -> Files.createFile(ctx.fileSystem.getPath(path), attributes));
+    }
+
+    @Override
+    public void createDirectory(String path, FileAttribute<?>... attributes) throws IOException {
+        performWithContext(ctx -> Files.createDirectory(ctx.fileSystem.getPath(path), attributes));
+    }
+
+    @Override
+    public void createDirectories(String path, FileAttribute<?>... attributes) throws IOException {
+        performWithContext(ctx -> Files.createDirectories(ctx.fileSystem.getPath(path), attributes));
+    }
+
+    @Override
+    public void setAttribute(String path, String attribute, Object value) throws IOException {
+        performWithContext(ctx -> Files.setAttribute(ctx.fileSystem.getPath(path), attribute, value));
+    }
+
+    @Override
+    public Object getAttribute(String path, String attribute) throws IOException {
+        return performWithContext(ctx -> Files.getAttribute(ctx.fileSystem.getPath(path), attribute));
+    }
+
+    @Override
+    public void setPermissions(String path, Set<PosixFilePermission> permissions) throws IOException {
+        performWithContext(ctx -> Files.setPosixFilePermissions(ctx.fileSystem.getPath(path), permissions));
+    }
+
+    @Override
+    public Set<PosixFilePermission> getPermissions(String path) throws IOException {
+        return performWithContext(ctx -> Files.getPosixFilePermissions(ctx.fileSystem.getPath(path)));
+    }
+
+    @Override
+    public void setLastModifiedTime(String path, Instant lastModified) throws IOException {
+        performWithContext(ctx -> Files.setLastModifiedTime(ctx.fileSystem.getPath(path), FileTime.from(lastModified)));
+    }
+
+    @Override
+    public Instant getLastModifiedTime(String path) throws IOException{
+        return performWithContext(ctx -> Files.getLastModifiedTime(ctx.fileSystem.getPath(path)).toInstant());
+    }
+
+    @Override
+    public void setPosixFileAttributes(String path,
+                                       String owner,
+                                       String group,
+                                       Instant lastModifiedTime,
+                                       Instant lastAccessTime,
+                                       Instant createTime) throws IOException {
+        performWithContext(ctx -> {
+            PosixFileAttributeView view = Files.getFileAttributeView(ctx.fileSystem.getPath(path),
+                    PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
+            view.setOwner(ctx.fileSystem.getUserPrincipalLookupService().lookupPrincipalByName(owner));
+            view.setGroup(ctx.fileSystem.getUserPrincipalLookupService().lookupPrincipalByGroupName(group));
+            view.setTimes(FileTime.from(lastModifiedTime),
+                    FileTime.from(lastAccessTime),
+                    FileTime.from(createTime));
+            return null;
+        });
+    }
+
+    @Override
+    public PosixFileAttributes getPosixFileAttributes(String path) throws IOException {
+        return performWithContext(ctx -> Files.getFileAttributeView(ctx.fileSystem.getPath(path),
+                PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS).readAttributes());
+    }
+
+    @Override
+    public void setOwner(String path, String owner) throws IOException {
+        performWithContext(ctx -> Files.setOwner(ctx.fileSystem.getPath(path),
+                ctx.fileSystem.getUserPrincipalLookupService().lookupPrincipalByName(owner)));
+    }
+
+    @Override
+    public String getOwner(String path) throws IOException {
+        return performWithContext(ctx -> Files.getOwner(ctx.fileSystem.getPath(path)).getName());
+    }
+
+
+    @Override
+    public void setGroup(String path, String group) throws IOException {
+        performWithContext(ctx -> {
+            PosixFileAttributeView view = Files.getFileAttributeView(ctx.fileSystem.getPath(path),
+                    PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS);
+            view.setGroup(ctx.fileSystem.getUserPrincipalLookupService().lookupPrincipalByGroupName(group));
+            return null;
+        });
+    }
+
+    @Override
+    public String getGroup(String path) throws IOException {
+        return performWithContext(ctx -> Files.getFileAttributeView(ctx.fileSystem.getPath(path),
+                PosixFileAttributeView.class, LinkOption.NOFOLLOW_LINKS).readAttributes().group().getName());
+    }
+
+    @Override
+    public void upload(Path source,
+                       Path target,
+                       CopyOption... copyOptions) throws IOException {
+        upload(source, target, DEFAULT_DIR_PERMISSIONS, DEFAULT_FILE_PERMISSIONS, copyOptions);
+    }
+
+    @Override
+    public void upload(Path source,
+                       Path target,
+                       Set<PosixFilePermission> dirPerms,
+                       Set<PosixFilePermission> filePerms,
+                       CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            upload(ctx, Files.newByteChannel(source), target, dirPerms, filePerms, copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void upload(Path source,
+                       String target,
+                       CopyOption... copyOptions) throws IOException {
+        upload(source, target, DEFAULT_DIR_PERMISSIONS, DEFAULT_FILE_PERMISSIONS, copyOptions);
+    }
+
+    @Override
+    public void upload(Path source, String target,
+                       Set<PosixFilePermission> dirPerms,
+                       Set<PosixFilePermission> filePerms,
+                       CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            upload(ctx, Files.newByteChannel(source), ctx.fileSystem.getPath(target),
+                    dirPerms, filePerms, copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void upload(InputStream source,
+                       Path target,
+                       CopyOption... copyOptions) throws IOException {
+        upload(source, target, DEFAULT_DIR_PERMISSIONS, DEFAULT_FILE_PERMISSIONS, copyOptions);
+    }
+
+    @Override
+    public void upload(InputStream source,
+                       Path target,
+                       Set<PosixFilePermission> dirPerms,
+                       Set<PosixFilePermission> filePerms,
+                       CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            upload(ctx, Channels.newChannel(source), target, dirPerms, filePerms, copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void upload(InputStream source,
+                       String target,
+                       CopyOption... copyOptions) throws IOException {
+        upload(source, target, DEFAULT_DIR_PERMISSIONS, DEFAULT_FILE_PERMISSIONS, copyOptions);
+    }
+
+    @Override
+    public void upload(InputStream source, String target,
+                       Set<PosixFilePermission> dirPerms,
+                       Set<PosixFilePermission> filePerms,
+                       CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            upload(ctx, Channels.newChannel(source), ctx.fileSystem.getPath(target),
+                    dirPerms, filePerms, copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void download(Path source, Path target, CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            download(ctx, source, target, copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void download(String source, Path target, CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            download(ctx, ctx.fileSystem.getPath(source), target, copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void download(Path source, OutputStream target) throws IOException {
+        performWithContext(ctx -> {
+            download(ctx, source, target);
+            return null;
+        });
+    }
+
+    @Override
+    public void download(String source, OutputStream target) throws IOException {
+        performWithContext(ctx -> {
+            Files.copy(ctx.fileSystem.getPath(source), target);
+            return null;
+        });
+    }
+
+    @Override
+    public DirectoryStream<Path> stream(String path, String glob) throws IOException {
+        FTPSContext ctx = new FTPSContext(uri, env);
+        return new WrappedDirectoryStream<>(ctx, Files.newDirectoryStream(ctx.fileSystem.getPath(path), glob));
+    }
+
+    @Override
+    public DirectoryStream<Path> stream(String path, DirectoryStream.Filter<Path> filter) throws IOException {
+        FTPSContext ctx = new FTPSContext(uri, env);
+        return new WrappedDirectoryStream<>(ctx, Files.newDirectoryStream(ctx.fileSystem.getPath(path), filter));
+    }
+
+    @Override
+    public Stream<Path> list(String path) throws IOException {
+        FTPSContext ctx = new FTPSContext(uri, env);
+        return FileWalker.list(new WrappedDirectoryStream<>(ctx, Files.newDirectoryStream(ctx.fileSystem.getPath(path))));
+    }
+
+    @Override
+    public Stream<Path> walk(String path, FileVisitOption... options) throws IOException {
+        FTPSContext ctx = new FTPSContext(uri, env);
+        return FileWalker.walk(ctx, ctx.fileSystem.getPath(path), Integer.MAX_VALUE, options);
+    }
+
+    @Override
+    public Stream<Path> walk(String path, int maxdepth, FileVisitOption... options) throws IOException {
+        FTPSContext ctx = new FTPSContext(uri, env);
+        return FileWalker.walk(ctx, ctx.fileSystem.getPath(path), maxdepth, options);
+    }
+
+    @Override
+    public void copy(String source, String target, CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            Files.copy(ctx.fileSystem.getPath(source), ctx.fileSystem.getPath(target), copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void rename(String source, String target, CopyOption... copyOptions) throws IOException {
+        performWithContext(ctx -> {
+            Files.move(ctx.fileSystem.getPath(source), ctx.fileSystem.getPath(target), copyOptions);
+            return null;
+        });
+    }
+
+    @Override
+    public void remove(String source) throws IOException {
+        performWithContext(ctx -> {
+            Files.deleteIfExists(ctx.fileSystem.getPath(source));
+            return null;
+        });
+    }
+
+    private void upload(FTPSContext ctx,
+                        ReadableByteChannel source,
+                        Path target,
+                        Set<PosixFilePermission> dirPerms,
+                        Set<PosixFilePermission> filePerms,
+                        CopyOption... copyOptions) throws IOException {
+        prepareForWrite(target, dirPerms, filePerms);
+        transfer(source, ctx.provider.newByteChannel(target, prepareWriteOptions(copyOptions)));
+    }
+
+    private void download(FTPSContext ctx,
+                          Path source,
+                          OutputStream outputStream) throws IOException {
+        download(ctx, source, Channels.newChannel(outputStream));
+    }
+
+    private void download(FTPSContext ctx,
+                          Path source,
+                          WritableByteChannel writableByteChannel) throws IOException {
+        transfer(ctx.provider.newByteChannel(source, prepareReadOptions()), writableByteChannel);
+    }
+
+    private void download(FTPSContext ctx,
+                          Path source,
+                          Path target,
+                          CopyOption... copyOptions) throws IOException {
+        prepareForWrite(target);
+        transfer(ctx.provider.newByteChannel(source, prepareReadOptions(copyOptions)),
+                Files.newByteChannel(target, prepareWriteOptions(copyOptions)));
+    }
+
+    private void prepareForWrite(Path path) throws IOException {
+        if (path == null) {
+            return;
+        }
+        Path parent = path.getParent();
+        if (parent != null) {
+            if (!Files.exists(parent)) {
+                Files.createDirectories(parent);
+            }
+        }
+        if (!Files.exists(path)) {
+            Files.createFile(path);
+        }
+    }
+
+    private void prepareForWrite(Path path,
+                                 Set<PosixFilePermission> dirPerms,
+                                 Set<PosixFilePermission> filePerms) throws IOException {
+        if (path == null) {
+            return;
+        }
+        Path parent = path.getParent();
+        if (parent != null) {
+            if (!Files.exists(parent)) {
+                Files.createDirectories(parent);
+            }
+            PosixFileAttributeView posixFileAttributeView =
+                    Files.getFileAttributeView(parent, PosixFileAttributeView.class);
+            posixFileAttributeView.setPermissions(dirPerms);
+        }
+        if (!Files.exists(path)) {
+            Files.createFile(path);
+        }
+        PosixFileAttributeView posixFileAttributeView =
+                Files.getFileAttributeView(path, PosixFileAttributeView.class);
+        posixFileAttributeView.setPermissions(filePerms);
+    }
+
+    private Set<? extends OpenOption> prepareReadOptions(CopyOption... copyOptions) {
+        // ignore user copy options
+        return EnumSet.of(StandardOpenOption.READ);
+    }
+
+    private Set<? extends OpenOption> prepareWriteOptions(CopyOption... copyOptions) {
+        Set<? extends OpenOption> options = null;
+        for (CopyOption copyOption : copyOptions) {
+            if (copyOption == StandardCopyOption.REPLACE_EXISTING) {
+                options = EnumSet.of(StandardOpenOption.CREATE, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING);
+            }
+        }
+        if (options == null) {
+            // we can not use CREATE_NEW, file is already there because of prepareForWrite() -> Files.createFile()
+            options = EnumSet.of(StandardOpenOption.CREATE, StandardOpenOption.WRITE);
+        }
+        return options;
+    }
+
+    private void transfer(ReadableByteChannel readableByteChannel,
+                          WritableByteChannel writableByteChannel) throws IOException {
+        ByteBuffer buffer = ByteBuffer.allocate(BUFFER_SIZE);
+        int read;
+        while ((read = readableByteChannel.read(buffer)) > 0) {
+            buffer.flip();
+            while (read > 0) {
+                read -= writableByteChannel.write(buffer);
+            }
+            buffer.clear();
+        }
+    }
+
+    private <T> T performWithContext(WithSecureContext<T> action) throws IOException {
+        FTPSContext ctx = null;
+        try {
+            if (uri != null) {
+                ctx = new FTPSContext(uri, env);
+                return action.perform(ctx);
+            } else {
+                return null;
+            }
+        } finally {
+            if (ctx != null) {
+                ctx.close();
+            }
+        }
+    }
+}

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/spi/FTPSFileServiceProvider.java

@@ -0,0 +1,15 @@
+package org.xbib.files.ftp.fs.spi;
+
+import org.xbib.files.FileService;
+import org.xbib.files.FileServiceProvider;
+
+import java.net.URI;
+import java.util.Map;
+
+public class FTPSFileServiceProvider implements FileServiceProvider {
+
+    @Override
+    public FileService provide(URI uri, Map<String, ?> env) {
+        return uri.isAbsolute() && uri.getScheme().equals("ftps") ?  new FTPSFileService(uri, env) : null;
+    }
+}

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/spi/WithContext.java

@@ -2,6 +2,7 @@ package org.xbib.files.ftp.fs.spi;
 
 import java.io.IOException;
 
+@FunctionalInterface
 interface WithContext<T> {
     T perform(FTPContext ctx) throws IOException;
 }

files-ftp-fs/src/main/java/org/xbib/files/ftp/fs/spi/WithSecureContext.java

@@ -0,0 +1,8 @@
+package org.xbib.files.ftp.fs.spi;
+
+import java.io.IOException;
+
+@FunctionalInterface
+interface WithSecureContext<T> {
+    T perform(FTPSContext ctx) throws IOException;
+}

files-ftp-fs/src/main/resources/META-INF/services/java.nio.file.spi.FileSystemProvider

@@ -1 +1,2 @@
 org.xbib.files.ftp.fs.FTPFileSystemProvider
+org.xbib.files.ftp.fs.FTPSFileSystemProvider

files-ftp-fs/src/main/resources/META-INF/services/org.xbib.files.FileServiceProvider

@@ -1 +1,2 @@
 org.xbib.files.ftp.fs.spi.FTPFileServiceProvider
+org.xbib.files.ftp.fs.spi.FTPSFileServiceProvider

files-ftp-fs/src/test/java/module-info.java

@@ -3,7 +3,6 @@ module org.xbib.files.ftp.fs.test {
     requires org.junit.jupiter.api;
     requires org.junit.jupiter.params;
     requires org.mockito;
-    requires org.slf4j;
     requires org.xbib.files.ftp;
     requires org.xbib.files.ftp.fs;
     requires org.xbib.files.ftp.mock;

files-ftp-fs/src/test/java/org/xbib/files/ftp/fs/test/FTPFileSystemTest.java

@@ -65,9 +65,6 @@ import static org.mockito.Mockito.verify;
 
 public class FTPFileSystemTest extends AbstractFTPFileSystemTest {
 
-    //@Rule
-    //public ExpectedException thrown = ExpectedException.none();
-
     @Test
     public void testGetPath() {
         testGetPath("/", "/");

files-jadaptive-sftp/build.gradle

@@ -1,5 +1,4 @@
 dependencies {
     api project(':files-api')
     api libs.maverick.synergy.client
-    testImplementation libs.net.security
 }

files-jadaptive-sftp/src/main/java/module-info.java

@@ -0,0 +1,12 @@
+import org.xbib.files.jadaptive.sftp.SftpFileSystemProvider;
+
+import java.nio.file.spi.FileSystemProvider;
+
+module org.xbib.files.jadaptive.sftp {
+    requires java.logging;
+    requires org.xbib.files;
+    requires com.sshtools.maverick.base;
+    requires com.sshtools.synergy.common;
+    requires com.sshtools.synergy.client;
+    provides FileSystemProvider with SftpFileSystemProvider;
+}

files-jadaptive-sftp/src/main/java/org/xbib/files/jadaptive/sftp/SftpContext.java

@@ -0,0 +1,20 @@
+package org.xbib.files.jadaptive.sftp;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.net.URI;
+import java.util.Map;
+
+public class SftpContext implements Closeable {
+
+    SftpFileSystemProvider provider;
+
+    SftpFileSystem fileSystem;
+
+    public SftpContext(URI uri, Map<String, ?> env) throws IOException {
+    }
+
+    @Override
+    public void close() throws IOException {
+    }
+}

files-jadaptive-sftp/src/main/java/org/xbib/files/jadaptive/sftp/SftpFileService.java

@@ -1,4 +1,4 @@
-package org.xbib.files.sftp.jadaptive.fs.spi;
+package org.xbib.files.jadaptive.sftp;
 
 import org.xbib.files.FileService;
 import org.xbib.files.FileWalker;
@@ -33,7 +33,7 @@ import java.util.Map;
 import java.util.Set;
 import java.util.stream.Stream;
 
-public class SFTPFileService implements FileService {
+public class SftpFileService implements FileService {
 
     private static final int BUFFER_SIZE = 128 * 1024;
 
@@ -47,7 +47,7 @@ public class SFTPFileService implements FileService {
 
     private final Map<String, ?> env;
 
-    public SFTPFileService(URI uri, Map<String, ?> env) {
+    public SftpFileService(URI uri, Map<String, ?> env) {
         this.uri = uri;
         this.env = env;
     }
@@ -303,31 +303,31 @@ public class SFTPFileService implements FileService {
 
     @Override
     public DirectoryStream<Path> stream(String path, String glob) throws IOException {
-        SFTPContext ctx = new SFTPContext(uri, env);
+        SftpContext ctx = new SftpContext(uri, env);
         return new WrappedDirectoryStream<>(ctx, Files.newDirectoryStream(ctx.fileSystem.getPath(path), glob));
     }
 
     @Override
     public DirectoryStream<Path> stream(String path, DirectoryStream.Filter<Path> filter) throws IOException {
-        SFTPContext ctx = new SFTPContext(uri, env);
+        SftpContext ctx = new SftpContext(uri, env);
         return new WrappedDirectoryStream<>(ctx, Files.newDirectoryStream(ctx.fileSystem.getPath(path), filter));
     }
 
     @Override
     public Stream<Path> list(String path) throws IOException {
-        SFTPContext ctx = new SFTPContext(uri, env);
+        SftpContext ctx = new SftpContext(uri, env);
         return FileWalker.list(new WrappedDirectoryStream<>(ctx, Files.newDirectoryStream(ctx.fileSystem.getPath(path))));
     }
 
     @Override
     public Stream<Path> walk(String path, FileVisitOption... options) throws IOException {
-        SFTPContext ctx = new SFTPContext(uri, env);
+        SftpContext ctx = new SftpContext(uri, env);
         return FileWalker.walk(ctx, ctx.fileSystem.getPath(path), Integer.MAX_VALUE, options);
     }
 
     @Override
     public Stream<Path> walk(String path, int maxdepth, FileVisitOption... options) throws IOException {
-        SFTPContext ctx = new SFTPContext(uri, env);
+        SftpContext ctx = new SftpContext(uri, env);
         return FileWalker.walk(ctx, ctx.fileSystem.getPath(path), maxdepth, options);
     }
 
@@ -357,7 +357,7 @@ public class SFTPFileService implements FileService {
         });
     }
 
-    private void doUpload(SFTPContext ctx,
+    private void doUpload(SftpContext ctx,
                           ReadableByteChannel source,
                           Path target,
                           Set<PosixFilePermission> dirPerms,
@@ -367,19 +367,19 @@ public class SFTPFileService implements FileService {
         transfer(source, ctx.provider.newByteChannel(target, prepareWriteOptions(copyOptions)));
     }
 
-    private void download(SFTPContext ctx,
+    private void download(SftpContext ctx,
                           Path source,
                           OutputStream outputStream) throws IOException {
         download(ctx, source, Channels.newChannel(outputStream));
     }
 
-    private void download(SFTPContext ctx,
+    private void download(SftpContext ctx,
                           Path source,
                           WritableByteChannel writableByteChannel) throws IOException {
         transfer(ctx.provider.newByteChannel(source, prepareReadOptions()), writableByteChannel);
     }
 
-    private void download(SFTPContext ctx,
+    private void download(SftpContext ctx,
                           Path source,
                           Path target,
                           CopyOption... copyOptions) throws IOException {
@@ -459,10 +459,10 @@ public class SFTPFileService implements FileService {
     }
 
     private <T> T performWithContext(WithContext<T> action) throws IOException {
-        SFTPContext ctx = null;
+        SftpContext ctx = null;
         try {
             if (uri != null) {
-                ctx = new SFTPContext(uri, env);
+                ctx = new SftpContext(uri, env);
                 return action.perform(ctx);
             } else {
                 return null;

files-jadaptive-sftp/src/main/java/org/xbib/files/jadaptive/sftp/SftpFileServiceProvider.java

@@ -1,4 +1,4 @@
-package org.xbib.files.sftp.jadaptive.fs.spi;
+package org.xbib.files.jadaptive.sftp;
 
 import org.xbib.files.FileService;
 import org.xbib.files.FileServiceProvider;
@@ -6,10 +6,10 @@ import org.xbib.files.FileServiceProvider;
 import java.net.URI;
 import java.util.Map;
 
-public class SFTPFileServiceProvider implements FileServiceProvider {
+public class SftpFileServiceProvider implements FileServiceProvider {
 
     @Override
     public FileService provide(URI uri, Map<String, ?> env) {
-        return uri.isAbsolute() && uri.getScheme().equals("sftp") ?  new SFTPFileService(uri, env) : null;
+        return uri.isAbsolute() && uri.getScheme().equals("sftp") ?  new SftpFileService(uri, env) : null;
     }
 }

files-jadaptive-sftp/src/main/java/org/xbib/files/jadaptive/sftp/SftpFileSystem.java

@@ -0,0 +1,16 @@
+package org.xbib.files.jadaptive.sftp;
+
+import com.sshtools.common.files.nio.AbstractFileNIOFileSystem;
+import com.sshtools.common.files.nio.AbstractFileNIOProvider;
+import com.sshtools.common.ssh.SshConnection;
+
+import java.net.URI;
+
+public class SftpFileSystem extends AbstractFileNIOFileSystem {
+
+    public SftpFileSystem(SshConnection con,
+                          URI uri,
+                          AbstractFileNIOProvider provider) {
+        super(con, uri, provider);
+    }
+}

files-jadaptive-sftp/src/main/java/org/xbib/files/jadaptive/sftp/SftpFileSystemProvider.java

@@ -0,0 +1,6 @@
+package org.xbib.files.jadaptive.sftp;
+
+import com.sshtools.common.files.nio.AbstractFileNIOProvider;
+
+public class SftpFileSystemProvider extends AbstractFileNIOProvider {
+}

files-jadaptive-sftp/src/main/java/org/xbib/files/jadaptive/sftp/WithContext.java

@@ -0,0 +1,8 @@
+package org.xbib.files.jadaptive.sftp;
+
+import java.io.IOException;
+
+@FunctionalInterface
+interface WithContext<T> {
+    T perform(SftpContext ctx) throws IOException;
+}

files-jadaptive-sftp/src/main/resources/META-INF/services/java.nio.file.spi.FileSystemProvider

@@ -0,0 +1 @@
+org.xbib.files.jadaptive.sftp.SftpFileSystemProvider

files-jadaptive-sftp/src/test/java/module-info.java

@@ -0,0 +1,8 @@
+module org.xbib.files.jadaptive.sftp.test {
+    requires java.logging;
+    requires transitive org.junit.jupiter.api;
+    requires org.xbib.files;
+    requires org.xbib.files.jadaptive.sftp;
+    exports org.xbib.files.jadaptive.sftp.test;
+    opens org.xbib.files.jadaptive.sftp.test to org.junit.platform.commons;
+}

files-jadaptive-sftp/src/test/java/org/xbib/files/jadaptive/sftp/test/SftpFileSystemTest.java

@@ -0,0 +1,32 @@
+package org.xbib.files.jadaptive.sftp.test;
+
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+import java.net.URI;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.util.Map;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class SftpFileSystemTest {
+
+    private static final Logger logger = Logger.getLogger(SftpFileSystemTest.class.getName());
+
+    public SftpFileSystemTest() {
+    }
+
+    @Disabled("missing connection object")
+    @Test
+    public void testFileSystem() throws IOException {
+        Map<String, ?> env = Map.of("username", "joerg");
+        try (FileSystem fileSystem = FileSystems.newFileSystem(URI.create("abfs://xbib.org:22"), env)) {
+            for (Path path : fileSystem.getRootDirectories()) {
+                logger.log(Level.INFO, "root dir = " + path);
+            }
+        }
+    }
+}

files-jadaptive-sftp/src/test/resources/logging.properties

@@ -0,0 +1,5 @@
+handlers=java.util.logging.ConsoleHandler
+.level=ALL
+java.util.logging.SimpleFormatter.format=%1$tY-%1$tm-%1$td %1$tH:%1$tM:%1$tS.%1$tL %4$-7s [%3$s] %5$s %6$s%n
+java.util.logging.ConsoleHandler.level=ALL
+java.util.logging.ConsoleHandler.formatter=java.util.logging.SimpleFormatter

files-jsch/LICENSE.txt

@@ -0,0 +1,30 @@
+JSch 0.0.* was released under the GNU LGPL license.  Later, we have switched
+over to a BSD-style license.
+
+------------------------------------------------------------------------------
+Copyright (c) 2002-2015 Atsuhiko Yamanaka, JCraft,Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+  1. Redistributions of source code must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+
+  2. Redistributions in binary form must reproduce the above copyright
+     notice, this list of conditions and the following disclaimer in
+     the documentation and/or other materials provided with the distribution.
+
+  3. The names of the authors may not be used to endorse or promote products
+     derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

files-jsch/NOTICE.txt

@@ -0,0 +1,7 @@
+
+This work is based on
+
+https://github.com/mwiede/jsch
+
+forked as of 23 July 2024 (Version 0.2.18)
+

files-jsch/build.gradle

@@ -0,0 +1,4 @@
+dependencies {
+    testImplementation testLibs.testcontainers
+    testImplementation testLibs.testcontainers.junit.jupiter
+}

files-jsch/src/main/java/com/jcraft/jsch/AgentConnector.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface AgentConnector {
+  String getName();
+
+  boolean isAvailable();
+
+  void query(Buffer buffer) throws AgentProxyException;
+}

files-jsch/src/main/java/com/jcraft/jsch/AgentIdentity.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class AgentIdentity implements Identity {
+
+  private AgentProxy agent;
+  private byte[] blob;
+  private String comment;
+  private String algname;
+
+  AgentIdentity(AgentProxy agent, byte[] blob, String comment) {
+    this.agent = agent;
+    this.blob = blob;
+    this.comment = comment;
+    algname = Util.byte2str((new Buffer(blob)).getString());
+  }
+
+  @Override
+  public boolean setPassphrase(byte[] passphrase) throws JSchException {
+    return true;
+  }
+
+  @Override
+  public byte[] getPublicKeyBlob() {
+    return blob;
+  }
+
+  @Override
+  public byte[] getSignature(byte[] data) {
+    return agent.sign(blob, data, null);
+  }
+
+  @Override
+  public byte[] getSignature(byte[] data, String alg) {
+    return agent.sign(blob, data, alg);
+  }
+
+  @Override
+  public String getAlgName() {
+    return algname;
+  }
+
+  @Override
+  public String getName() {
+    return comment;
+  }
+
+  @Override
+  public boolean isEncrypted() {
+    return false;
+  }
+
+  @Override
+  public void clear() {}
+}

files-jsch/src/main/java/com/jcraft/jsch/AgentIdentityRepository.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.util.Vector;
+
+public class AgentIdentityRepository implements IdentityRepository {
+
+  private AgentProxy agent;
+
+  public AgentIdentityRepository(AgentConnector connector) {
+    this.agent = new AgentProxy(connector);
+  }
+
+  @Override
+  public Vector<Identity> getIdentities() {
+    return agent.getIdentities();
+  }
+
+  @Override
+  public boolean add(byte[] identity) {
+    return agent.addIdentity(identity);
+  }
+
+  @Override
+  public boolean remove(byte[] blob) {
+    return agent.removeIdentity(blob);
+  }
+
+  @Override
+  public void removeAll() {
+    agent.removeAllIdentities();
+  }
+
+  @Override
+  public String getName() {
+    return agent.getConnector().getName();
+  }
+
+  @Override
+  public int getStatus() {
+    if (agent.getConnector().isAvailable()) {
+      return RUNNING;
+    } else {
+      return NOTRUNNING;
+    }
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/AgentProxy.java

@@ -0,0 +1,246 @@
+/*
+ * Copyright (c) 2012 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.util.Vector;
+
+class AgentProxy {
+
+  private static final byte SSH_AGENTC_REQUEST_RSA_IDENTITIES = 1;
+  private static final byte SSH_AGENT_RSA_IDENTITIES_ANSWER = 2;
+  private static final byte SSH_AGENTC_RSA_CHALLENGE = 3;
+  private static final byte SSH_AGENT_RSA_RESPONSE = 4;
+  private static final byte SSH_AGENT_FAILURE = 5;
+  private static final byte SSH_AGENT_SUCCESS = 6;
+  private static final byte SSH_AGENTC_ADD_RSA_IDENTITY = 7;
+  private static final byte SSH_AGENTC_REMOVE_RSA_IDENTITY = 8;
+  private static final byte SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES = 9;
+
+  private static final byte SSH2_AGENTC_REQUEST_IDENTITIES = 11;
+  private static final byte SSH2_AGENT_IDENTITIES_ANSWER = 12;
+  private static final byte SSH2_AGENTC_SIGN_REQUEST = 13;
+  private static final byte SSH2_AGENT_SIGN_RESPONSE = 14;
+  private static final byte SSH2_AGENTC_ADD_IDENTITY = 17;
+  private static final byte SSH2_AGENTC_REMOVE_IDENTITY = 18;
+  private static final byte SSH2_AGENTC_REMOVE_ALL_IDENTITIES = 19;
+
+  private static final byte SSH_AGENTC_ADD_SMARTCARD_KEY = 20;
+  private static final byte SSH_AGENTC_REMOVE_SMARTCARD_KEY = 21;
+
+  private static final byte SSH_AGENTC_LOCK = 22;
+  private static final byte SSH_AGENTC_UNLOCK = 23;
+
+  private static final byte SSH_AGENTC_ADD_RSA_ID_CONSTRAINED = 24;
+  private static final byte SSH2_AGENTC_ADD_ID_CONSTRAINED = 25;
+  private static final byte SSH_AGENTC_ADD_SMARTCARD_KEY_CONSTRAINED = 26;
+
+  private static final byte SSH_AGENT_CONSTRAIN_LIFETIME = 1;
+  private static final byte SSH_AGENT_CONSTRAIN_CONFIRM = 2;
+
+  private static final byte SSH2_AGENT_FAILURE = 30;
+
+  private static final byte SSH_COM_AGENT2_FAILURE = 102;
+
+  // private static final byte SSH_AGENT_OLD_SIGNATURE = 0x1;
+  private static final int SSH_AGENT_RSA_SHA2_256 = 0x2;
+  private static final int SSH_AGENT_RSA_SHA2_512 = 0x4;
+
+  private static final int MAX_AGENT_IDENTITIES = 2048;
+
+  private final byte[] buf = new byte[1024];
+  private final Buffer buffer = new Buffer(buf);
+
+  private AgentConnector connector;
+
+  AgentProxy(AgentConnector connector) {
+    this.connector = connector;
+  }
+
+  synchronized Vector<Identity> getIdentities() {
+    Vector<Identity> identities = new Vector<>();
+
+    int required_size = 1 + 4;
+    buffer.reset();
+    buffer.checkFreeSize(required_size);
+    buffer.putInt(required_size - 4);
+    buffer.putByte(SSH2_AGENTC_REQUEST_IDENTITIES);
+
+    try {
+      connector.query(buffer);
+    } catch (AgentProxyException e) {
+      buffer.rewind();
+      buffer.putByte(SSH_AGENT_FAILURE);
+      return identities;
+    }
+
+    int rcode = buffer.getByte();
+
+    // System.out.println(rcode == SSH2_AGENT_IDENTITIES_ANSWER);
+
+    if (rcode != SSH2_AGENT_IDENTITIES_ANSWER) {
+      return identities;
+    }
+
+    int count = buffer.getInt();
+    // System.out.println(count);
+    if (count <= 0 || count > MAX_AGENT_IDENTITIES) {
+      return identities;
+    }
+
+    for (int i = 0; i < count; i++) {
+      byte[] blob = buffer.getString();
+      String comment = Util.byte2str(buffer.getString());
+      identities.add(new AgentIdentity(this, blob, comment));
+    }
+
+    return identities;
+  }
+
+  synchronized byte[] sign(byte[] blob, byte[] data, String alg) {
+    int flags = 0x0;
+    if (alg != null) {
+      if (alg.equals("rsa-sha2-256")) {
+        flags = SSH_AGENT_RSA_SHA2_256;
+      } else if (alg.equals("rsa-sha2-512")) {
+        flags = SSH_AGENT_RSA_SHA2_512;
+      }
+    }
+
+    int required_size = 1 + 4 * 4 + blob.length + data.length;
+    buffer.reset();
+    buffer.checkFreeSize(required_size);
+    buffer.putInt(required_size - 4);
+    buffer.putByte(SSH2_AGENTC_SIGN_REQUEST);
+    buffer.putString(blob);
+    buffer.putString(data);
+    buffer.putInt(flags);
+
+    try {
+      connector.query(buffer);
+    } catch (AgentProxyException e) {
+      buffer.rewind();
+      buffer.putByte(SSH_AGENT_FAILURE);
+    }
+
+    int rcode = buffer.getByte();
+
+    // System.out.println(rcode == SSH2_AGENT_SIGN_RESPONSE);
+
+    if (rcode != SSH2_AGENT_SIGN_RESPONSE) {
+      return null;
+    }
+
+    return buffer.getString();
+  }
+
+  synchronized boolean removeIdentity(byte[] blob) {
+    int required_size = 1 + 4 * 2 + blob.length;
+    buffer.reset();
+    buffer.checkFreeSize(required_size);
+    buffer.putInt(required_size - 4);
+    buffer.putByte(SSH2_AGENTC_REMOVE_IDENTITY);
+    buffer.putString(blob);
+
+    try {
+      connector.query(buffer);
+    } catch (AgentProxyException e) {
+      buffer.rewind();
+      buffer.putByte(SSH_AGENT_FAILURE);
+    }
+
+    int rcode = buffer.getByte();
+
+    // System.out.println(rcode == SSH_AGENT_SUCCESS);
+
+    return rcode == SSH_AGENT_SUCCESS;
+  }
+
+  synchronized void removeAllIdentities() {
+    int required_size = 1 + 4;
+    buffer.reset();
+    buffer.checkFreeSize(required_size);
+    buffer.putInt(required_size - 4);
+    buffer.putByte(SSH2_AGENTC_REMOVE_ALL_IDENTITIES);
+
+    try {
+      connector.query(buffer);
+    } catch (AgentProxyException e) {
+      buffer.rewind();
+      buffer.putByte(SSH_AGENT_FAILURE);
+    }
+
+    // int rcode = buffer.getByte();
+
+    // System.out.println(rcode == SSH_AGENT_SUCCESS);
+  }
+
+  synchronized boolean addIdentity(byte[] identity) {
+    int required_size = 1 + 4 + identity.length;
+    buffer.reset();
+    buffer.checkFreeSize(required_size);
+    buffer.putInt(required_size - 4);
+    buffer.putByte(SSH2_AGENTC_ADD_IDENTITY);
+    buffer.putByte(identity);
+
+    try {
+      connector.query(buffer);
+    } catch (AgentProxyException e) {
+      buffer.rewind();
+      buffer.putByte(SSH_AGENT_FAILURE);
+    }
+
+    int rcode = buffer.getByte();
+
+    // System.out.println(rcode == SSH_AGENT_SUCCESS);
+
+    return rcode == SSH_AGENT_SUCCESS;
+  }
+
+  synchronized boolean isRunning() {
+    int required_size = 1 + 4;
+    buffer.reset();
+    buffer.checkFreeSize(required_size);
+    buffer.putInt(required_size - 4);
+    buffer.putByte(SSH2_AGENTC_REQUEST_IDENTITIES);
+
+    try {
+      connector.query(buffer);
+    } catch (AgentProxyException e) {
+      return false;
+    }
+
+    int rcode = buffer.getByte();
+
+    // System.out.println(rcode == SSH2_AGENT_IDENTITIES_ANSWER);
+
+    return rcode == SSH2_AGENT_IDENTITIES_ANSWER;
+  }
+
+  synchronized AgentConnector getConnector() {
+    return connector;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/AgentProxyException.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2011 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public class AgentProxyException extends Exception {
+  private static final long serialVersionUID = -1L;
+
+  public AgentProxyException(String message) {
+    super(message);
+  }
+
+  public AgentProxyException(String message, Throwable e) {
+    super(message, e);
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/Argon2.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2013-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface Argon2 extends KDF {
+  public static final int ARGON2D = 0;
+  public static final int ARGON2I = 1;
+  public static final int ARGON2ID = 2;
+  public static final int V10 = 0x10;
+  public static final int V13 = 0x13;
+
+  void init(byte[] salt, int iteration, int type, byte[] additional, byte[] secret, int memory,
+      int parallelism, int version) throws Exception;
+}

files-jsch/src/main/java/com/jcraft/jsch/BCrypt.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2013-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface BCrypt extends KDF {
+  void init(byte[] salt, int iteration) throws Exception;
+}

files-jsch/src/main/java/com/jcraft/jsch/Buffer.java

@@ -0,0 +1,303 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public class Buffer {
+  final byte[] tmp = new byte[4];
+  byte[] buffer;
+  int index;
+  int s;
+
+  public Buffer(int size) {
+    buffer = new byte[size];
+    index = 0;
+    s = 0;
+  }
+
+  public Buffer(byte[] buffer) {
+    this.buffer = buffer;
+    index = 0;
+    s = 0;
+  }
+
+  public Buffer() {
+    this(1024 * 10 * 2);
+  }
+
+  public void putByte(byte foo) {
+    buffer[index++] = foo;
+  }
+
+  public void putByte(byte[] foo) {
+    putByte(foo, 0, foo.length);
+  }
+
+  public void putByte(byte[] foo, int begin, int length) {
+    System.arraycopy(foo, begin, buffer, index, length);
+    index += length;
+  }
+
+  public void putString(byte[] foo) {
+    putString(foo, 0, foo.length);
+  }
+
+  public void putString(byte[] foo, int begin, int length) {
+    putInt(length);
+    putByte(foo, begin, length);
+  }
+
+  public void putInt(int val) {
+    tmp[0] = (byte) (val >>> 24);
+    tmp[1] = (byte) (val >>> 16);
+    tmp[2] = (byte) (val >>> 8);
+    tmp[3] = (byte) (val);
+    System.arraycopy(tmp, 0, buffer, index, 4);
+    index += 4;
+  }
+
+  public void putLong(long val) {
+    tmp[0] = (byte) (val >>> 56);
+    tmp[1] = (byte) (val >>> 48);
+    tmp[2] = (byte) (val >>> 40);
+    tmp[3] = (byte) (val >>> 32);
+    System.arraycopy(tmp, 0, buffer, index, 4);
+    tmp[0] = (byte) (val >>> 24);
+    tmp[1] = (byte) (val >>> 16);
+    tmp[2] = (byte) (val >>> 8);
+    tmp[3] = (byte) (val);
+    System.arraycopy(tmp, 0, buffer, index + 4, 4);
+    index += 8;
+  }
+
+  void skip(int n) {
+    index += n;
+  }
+
+  void putPad(int n) {
+    while (n > 0) {
+      buffer[index++] = (byte) 0;
+      n--;
+    }
+  }
+
+  public void putMPInt(byte[] foo) {
+    int i = foo.length;
+    if ((foo[0] & 0x80) != 0) {
+      i++;
+      putInt(i);
+      putByte((byte) 0);
+    } else {
+      putInt(i);
+    }
+    putByte(foo);
+  }
+
+  public int getLength() {
+    return index - s;
+  }
+
+  public int getOffSet() {
+    return s;
+  }
+
+  public void setOffSet(int s) {
+    this.s = s;
+  }
+
+  public long getLong() {
+    long foo = getInt() & 0xffffffffL;
+    foo = ((foo << 32)) | (getInt() & 0xffffffffL);
+    return foo;
+  }
+
+  public int getInt() {
+    int foo = getShort();
+    foo = ((foo << 16) & 0xffff0000) | (getShort() & 0xffff);
+    return foo;
+  }
+
+  public long getUInt() {
+    long foo = 0L;
+    long bar = 0L;
+    foo = getByte();
+    foo = ((foo << 8) & 0xff00) | (getByte() & 0xff);
+    bar = getByte();
+    bar = ((bar << 8) & 0xff00) | (getByte() & 0xff);
+    foo = ((foo << 16) & 0xffff0000) | (bar & 0xffff);
+    return foo;
+  }
+
+  int getShort() {
+    int foo = getByte();
+    foo = ((foo << 8) & 0xff00) | (getByte() & 0xff);
+    return foo;
+  }
+
+  public int getByte() {
+    return (buffer[s++] & 0xff);
+  }
+
+  public void getByte(byte[] foo) {
+    getByte(foo, 0, foo.length);
+  }
+
+  void getByte(byte[] foo, int start, int len) {
+    System.arraycopy(buffer, s, foo, start, len);
+    s += len;
+  }
+
+  public int getByte(int len) {
+    int foo = s;
+    s += len;
+    return foo;
+  }
+
+  public byte[] getMPInt() {
+    int i = getInt(); // uint32
+    if (i < 0 || // bigger than 0x7fffffff
+        i > 8 * 1024) {
+      // TODO: an exception should be thrown.
+      i = 8 * 1024; // the session will be broken, but working around OOME.
+    }
+    byte[] foo = new byte[i];
+    getByte(foo, 0, i);
+    return foo;
+  }
+
+  public byte[] getMPIntBits() {
+    int bits = getInt();
+    int bytes = (bits + 7) / 8;
+    byte[] foo = new byte[bytes];
+    getByte(foo, 0, bytes);
+    if ((foo[0] & 0x80) != 0) {
+      byte[] bar = new byte[foo.length + 1];
+      bar[0] = 0; // ??
+      System.arraycopy(foo, 0, bar, 1, foo.length);
+      foo = bar;
+    }
+    return foo;
+  }
+
+  public byte[] getString() {
+    int i = getInt(); // uint32
+    if (i < 0 || // bigger than 0x7fffffff
+        i > 256 * 1024) {
+      // TODO: an exception should be thrown.
+      i = 256 * 1024; // the session will be broken, but working around OOME.
+    }
+    byte[] foo = new byte[i];
+    getByte(foo, 0, i);
+    return foo;
+  }
+
+  byte[] getString(int[] start, int[] len) {
+    int i = getInt();
+    start[0] = getByte(i);
+    len[0] = i;
+    return buffer;
+  }
+
+  public void reset() {
+    index = 0;
+    s = 0;
+  }
+
+  public void shift() {
+    if (s == 0)
+      return;
+    System.arraycopy(buffer, s, buffer, 0, index - s);
+    index = index - s;
+    s = 0;
+  }
+
+  void rewind() {
+    s = 0;
+  }
+
+  byte getCommand() {
+    return buffer[5];
+  }
+
+  // Hardcode this since we can't use dynamic Session value
+  private static final int buffer_margin = 32 + // maximum padding length
+      64 + // maximum mac length
+      32; // margin for deflater; deflater may inflate data
+
+  void checkFreeSize(int n) {
+    int size = index + n + buffer_margin;
+    if (buffer.length < size) {
+      int i = buffer.length * 2;
+      if (i < size)
+        i = size;
+      byte[] tmp = new byte[i];
+      System.arraycopy(buffer, 0, tmp, 0, index);
+      buffer = tmp;
+    }
+  }
+
+  byte[][] getBytes(int n, String msg) throws JSchException {
+    byte[][] tmp = new byte[n][];
+    for (int i = 0; i < n; i++) {
+      int j = getInt();
+      if (getLength() < j) {
+        throw new JSchException(msg);
+      }
+      tmp[i] = new byte[j];
+      getByte(tmp[i]);
+    }
+    return tmp;
+  }
+
+  /*
+   * static Buffer fromBytes(byte[]... args){ int length = args.length*4; for(int i = 0; i <
+   * args.length; i++){ length += args[i].length; } Buffer buf = new Buffer(length); for(int i = 0;
+   * i < args.length; i++){ buf.putString(args[i]); } return buf; }
+   */
+
+  static Buffer fromBytes(byte[][] args) {
+    int length = args.length * 4;
+    for (int i = 0; i < args.length; i++) {
+      length += args[i].length;
+    }
+    Buffer buf = new Buffer(length);
+    for (int i = 0; i < args.length; i++) {
+      buf.putString(args[i]);
+    }
+    return buf;
+  }
+
+  /*
+   * static String[] chars={ "0","1","2","3","4","5","6","7","8","9", "a","b","c","d","e","f" };
+   * static void dump_buffer(){ int foo; for(int i=0; i<tmp_buffer_index; i++){
+   * foo=tmp_buffer[i]&0xff; System.err.print(chars[(foo>>>4)&0xf]);
+   * System.err.print(chars[foo&0xf]); if(i%16==15){ System.err.println(""); continue; } if(i>0 &&
+   * i%2==1){ System.err.print(" "); } } System.err.println(""); } static void dump(byte[] b){
+   * dump(b, 0, b.length); } static void dump(byte[] b, int s, int l){ for(int i=s; i<s+l; i++){
+   * System.err.print(Integer.toHexString(b[i]&0xff)+":"); } System.err.println(""); }
+   */
+
+}

files-jsch/src/main/java/com/jcraft/jsch/Channel.java

@@ -0,0 +1,842 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.PipedInputStream;
+import java.io.PipedOutputStream;
+import java.util.Vector;
+
+public abstract class Channel {
+
+  static final int SSH_MSG_CHANNEL_OPEN_CONFIRMATION = 91;
+  static final int SSH_MSG_CHANNEL_OPEN_FAILURE = 92;
+  static final int SSH_MSG_CHANNEL_WINDOW_ADJUST = 93;
+
+  static final int SSH_OPEN_ADMINISTRATIVELY_PROHIBITED = 1;
+  static final int SSH_OPEN_CONNECT_FAILED = 2;
+  static final int SSH_OPEN_UNKNOWN_CHANNEL_TYPE = 3;
+  static final int SSH_OPEN_RESOURCE_SHORTAGE = 4;
+
+  static int index = 0;
+  private static Vector<Channel> pool = new Vector<>();
+
+  static Channel getChannel(String type, Session session) {
+    Channel ret = null;
+    if (type.equals("session")) {
+      ret = new ChannelSession();
+    }
+    if (type.equals("shell")) {
+      ret = new ChannelShell();
+    }
+    if (type.equals("exec")) {
+      ret = new ChannelExec();
+    }
+    if (type.equals("x11")) {
+      ret = new ChannelX11();
+    }
+    if (type.equals("auth-agent@openssh.com")) {
+      ret = new ChannelAgentForwarding();
+    }
+    if (type.equals("direct-tcpip")) {
+      ret = new ChannelDirectTCPIP();
+    }
+    if (type.equals("forwarded-tcpip")) {
+      ret = new ChannelForwardedTCPIP();
+    }
+    if (type.equals("sftp")) {
+      ChannelSftp sftp = new ChannelSftp();
+      boolean useWriteFlushWorkaround =
+          session.getConfig("use_sftp_write_flush_workaround").equals("yes");
+      sftp.setUseWriteFlushWorkaround(useWriteFlushWorkaround);
+      ret = sftp;
+    }
+    if (type.equals("subsystem")) {
+      ret = new ChannelSubsystem();
+    }
+    if (type.equals("direct-streamlocal@openssh.com")) {
+      ret = new ChannelDirectStreamLocal();
+    }
+    if (ret == null) {
+      return null;
+    }
+    ret.setSession(session);
+    return ret;
+  }
+
+  static Channel getChannel(int id, Session session) {
+    synchronized (pool) {
+      for (int i = 0; i < pool.size(); i++) {
+        Channel c = pool.elementAt(i);
+        if (c.id == id && c.session == session)
+          return c;
+      }
+    }
+    return null;
+  }
+
+  static void del(Channel c) {
+    synchronized (pool) {
+      pool.removeElement(c);
+    }
+  }
+
+  int id;
+  volatile int recipient = -1;
+  protected byte[] type = Util.str2byte("foo");
+  volatile int lwsize_max = 0x100000;
+  volatile int lwsize = lwsize_max; // local initial window size
+  volatile int lmpsize = 0x4000; // local maximum packet size
+
+  volatile long rwsize = 0; // remote initial window size
+  volatile int rmpsize = 0; // remote maximum packet size
+
+  IO io = null;
+  Thread thread = null;
+
+  volatile boolean eof_local = false;
+  volatile boolean eof_remote = false;
+
+  volatile boolean close = false;
+  volatile boolean connected = false;
+  volatile boolean open_confirmation = false;
+
+  volatile int exitstatus = -1;
+
+  volatile int reply = 0;
+  volatile int connectTimeout = 0;
+
+  protected Session session;
+
+  int notifyme = 0;
+
+  Channel() {
+    synchronized (pool) {
+      id = index++;
+      pool.addElement(this);
+    }
+  }
+
+  synchronized void setRecipient(int foo) {
+    this.recipient = foo;
+    if (notifyme > 0)
+      notifyAll();
+  }
+
+  int getRecipient() {
+    return recipient;
+  }
+
+  void init() throws JSchException {}
+
+  public void connect() throws JSchException {
+    connect(0);
+  }
+
+  public void connect(int connectTimeout) throws JSchException {
+    this.connectTimeout = connectTimeout;
+    try {
+      sendChannelOpen();
+      start();
+    } catch (Exception e) {
+      connected = false;
+      disconnect();
+      if (e instanceof JSchException)
+        throw (JSchException) e;
+      throw new JSchException(e.toString(), e);
+    }
+  }
+
+  public void setXForwarding(boolean foo) {}
+
+  public void start() throws JSchException {}
+
+  public boolean isEOF() {
+    return eof_remote;
+  }
+
+  void getData(Buffer buf) {
+    setRecipient(buf.getInt());
+    setRemoteWindowSize(buf.getUInt());
+    setRemotePacketSize(buf.getInt());
+  }
+
+  public void setInputStream(InputStream in) {
+    io.setInputStream(in, false);
+  }
+
+  public void setInputStream(InputStream in, boolean dontclose) {
+    io.setInputStream(in, dontclose);
+  }
+
+  public void setOutputStream(OutputStream out) {
+    io.setOutputStream(out, false);
+  }
+
+  public void setOutputStream(OutputStream out, boolean dontclose) {
+    io.setOutputStream(out, dontclose);
+  }
+
+  public void setExtOutputStream(OutputStream out) {
+    io.setExtOutputStream(out, false);
+  }
+
+  public void setExtOutputStream(OutputStream out, boolean dontclose) {
+    io.setExtOutputStream(out, dontclose);
+  }
+
+  public InputStream getInputStream() throws IOException {
+    Session _session = this.session;
+    if (_session != null && isConnected() && _session.getLogger().isEnabled(Logger.WARN)) {
+      _session.getLogger().log(Logger.WARN, "getInputStream() should be called before connect()");
+    }
+
+    int max_input_buffer_size = 32 * 1024;
+    try {
+      max_input_buffer_size = Integer.parseInt(getSession().getConfig("max_input_buffer_size"));
+    } catch (Exception e) {
+    }
+    PipedInputStream in = new MyPipedInputStream(32 * 1024, // this value should be customizable.
+        max_input_buffer_size);
+    boolean resizable = 32 * 1024 < max_input_buffer_size;
+    io.setOutputStream(new PassiveOutputStream(in, resizable), false);
+    return in;
+  }
+
+  public InputStream getExtInputStream() throws IOException {
+    Session _session = this.session;
+    if (_session != null && isConnected() && _session.getLogger().isEnabled(Logger.WARN)) {
+      _session.getLogger().log(Logger.WARN,
+          "getExtInputStream() should be called before connect()");
+    }
+
+    int max_input_buffer_size = 32 * 1024;
+    try {
+      max_input_buffer_size = Integer.parseInt(getSession().getConfig("max_input_buffer_size"));
+    } catch (Exception e) {
+    }
+    PipedInputStream in = new MyPipedInputStream(32 * 1024, // this value should be customizable.
+        max_input_buffer_size);
+    boolean resizable = 32 * 1024 < max_input_buffer_size;
+    io.setExtOutputStream(new PassiveOutputStream(in, resizable), false);
+    return in;
+  }
+
+  public OutputStream getOutputStream() throws IOException {
+
+    final Channel channel = this;
+    OutputStream out = new OutputStream() {
+      private int dataLen = 0;
+      private Buffer buffer = null;
+      private Packet packet = null;
+      private boolean closed = false;
+
+      private synchronized void init() throws IOException {
+        buffer = new Buffer(rmpsize);
+        packet = new Packet(buffer);
+
+        byte[] _buf = buffer.buffer;
+        try {
+          if (_buf.length - (14 + 0) - getSession().getBufferMargin() <= 0) {
+            buffer = null;
+            packet = null;
+            throw new IOException("failed to initialize the channel.");
+          }
+        } catch (JSchException e) {
+          throw new IOException("failed to initialize the channel.", e);
+        }
+      }
+
+      byte[] b = new byte[1];
+
+      @Override
+      public void write(int w) throws IOException {
+        b[0] = (byte) w;
+        write(b, 0, 1);
+      }
+
+      @Override
+      public void write(byte[] buf, int s, int l) throws IOException {
+        if (packet == null) {
+          init();
+        }
+
+        if (closed) {
+          throw new IOException("Already closed");
+        }
+
+        byte[] _buf = buffer.buffer;
+        int _bufl = _buf.length;
+        try {
+          while (l > 0) {
+            int _l = l;
+            int buffer_margin = getSession().getBufferMargin();
+            if (l > _bufl - (14 + dataLen) - buffer_margin) {
+              _l = _bufl - (14 + dataLen) - buffer_margin;
+            }
+
+            if (_l <= 0) {
+              flush();
+              continue;
+            }
+
+            System.arraycopy(buf, s, _buf, 14 + dataLen, _l);
+            dataLen += _l;
+            s += _l;
+            l -= _l;
+          }
+        } catch (JSchException e) {
+          throw new IOException(e.toString(), e);
+        }
+      }
+
+      @Override
+      public void flush() throws IOException {
+        if (closed) {
+          throw new IOException("Already closed");
+        }
+        if (dataLen == 0)
+          return;
+        packet.reset();
+        buffer.putByte((byte) Session.SSH_MSG_CHANNEL_DATA);
+        buffer.putInt(recipient);
+        buffer.putInt(dataLen);
+        buffer.skip(dataLen);
+        try {
+          int foo = dataLen;
+          dataLen = 0;
+          synchronized (channel) {
+            if (!channel.close)
+              getSession().write(packet, channel, foo);
+          }
+        } catch (Exception e) {
+          close();
+          throw new IOException(e.toString(), e);
+        }
+      }
+
+      @Override
+      public void close() throws IOException {
+        if (packet == null) {
+          try {
+            init();
+          } catch (IOException e) {
+            // close should be finished silently.
+            return;
+          }
+        }
+        if (closed) {
+          return;
+        }
+        if (dataLen > 0) {
+          flush();
+        }
+        channel.eof();
+        closed = true;
+      }
+    };
+    return out;
+  }
+
+  static class MyPipedInputStream extends PipedInputStream {
+    private int BUFFER_SIZE = 1024;
+    private int max_buffer_size = BUFFER_SIZE;
+
+    MyPipedInputStream() throws IOException {
+      super();
+    }
+
+    MyPipedInputStream(int size) throws IOException {
+      super();
+      buffer = new byte[size];
+      BUFFER_SIZE = size;
+      max_buffer_size = size;
+    }
+
+    MyPipedInputStream(int size, int max_buffer_size) throws IOException {
+      this(size);
+      this.max_buffer_size = max_buffer_size;
+    }
+
+    MyPipedInputStream(PipedOutputStream out) throws IOException {
+      super(out);
+    }
+
+    MyPipedInputStream(PipedOutputStream out, int size) throws IOException {
+      super(out);
+      buffer = new byte[size];
+      BUFFER_SIZE = size;
+    }
+
+    /*
+     * TODO: We should have our own Piped[I/O]Stream implementation. Before accepting data, JDK's
+     * PipedInputStream will check the existence of reader thread, and if it is not alive, the
+     * stream will be closed. That behavior may cause the problem if multiple threads make access to
+     * it.
+     */
+    public synchronized void updateReadSide() throws IOException {
+      if (available() != 0) { // not empty
+        return;
+      }
+      in = 0;
+      out = 0;
+      buffer[in++] = 0;
+      read();
+    }
+
+    private int freeSpace() {
+      int size = 0;
+      if (out < in) {
+        size = buffer.length - in;
+      } else if (in < out) {
+        if (in == -1)
+          size = buffer.length;
+        else
+          size = out - in;
+      }
+      return size;
+    }
+
+    synchronized void checkSpace(int len) throws IOException {
+      int size = freeSpace();
+      if (size < len) {
+        int datasize = buffer.length - size;
+        int foo = buffer.length;
+        while ((foo - datasize) < len) {
+          foo *= 2;
+        }
+
+        if (foo > max_buffer_size) {
+          foo = max_buffer_size;
+        }
+        if ((foo - datasize) < len)
+          return;
+
+        byte[] tmp = new byte[foo];
+        if (out < in) {
+          System.arraycopy(buffer, 0, tmp, 0, buffer.length);
+        } else if (in < out) {
+          if (in == -1) {
+          } else {
+            System.arraycopy(buffer, 0, tmp, 0, in);
+            System.arraycopy(buffer, out, tmp, tmp.length - (buffer.length - out),
+                (buffer.length - out));
+            out = tmp.length - (buffer.length - out);
+          }
+        } else if (in == out) {
+          System.arraycopy(buffer, 0, tmp, 0, buffer.length);
+          in = buffer.length;
+        }
+        buffer = tmp;
+      } else if (buffer.length == size && size > BUFFER_SIZE) {
+        int i = size / 2;
+        if (i < BUFFER_SIZE)
+          i = BUFFER_SIZE;
+        byte[] tmp = new byte[i];
+        buffer = tmp;
+      }
+    }
+  }
+
+  void setLocalWindowSizeMax(int foo) {
+    this.lwsize_max = foo;
+  }
+
+  void setLocalWindowSize(int foo) {
+    this.lwsize = foo;
+  }
+
+  void setLocalPacketSize(int foo) {
+    this.lmpsize = foo;
+  }
+
+  synchronized void setRemoteWindowSize(long foo) {
+    this.rwsize = foo;
+  }
+
+  synchronized void addRemoteWindowSize(long foo) {
+    this.rwsize += foo;
+    if (notifyme > 0)
+      notifyAll();
+  }
+
+  void setRemotePacketSize(int foo) {
+    this.rmpsize = foo;
+  }
+
+  abstract void run();
+
+  void write(byte[] foo) throws IOException {
+    write(foo, 0, foo.length);
+  }
+
+  void write(byte[] foo, int s, int l) throws IOException {
+    try {
+      io.put(foo, s, l);
+    } catch (NullPointerException e) {
+    }
+  }
+
+  void write_ext(byte[] foo, int s, int l) throws IOException {
+    try {
+      io.put_ext(foo, s, l);
+    } catch (NullPointerException e) {
+    }
+  }
+
+  void eof_remote() {
+    eof_remote = true;
+    try {
+      io.out_close();
+    } catch (NullPointerException e) {
+    }
+  }
+
+  void eof() {
+    if (eof_local)
+      return;
+    eof_local = true;
+
+    int i = getRecipient();
+    if (i == -1)
+      return;
+
+    try {
+      Buffer buf = new Buffer(100);
+      Packet packet = new Packet(buf);
+      packet.reset();
+      buf.putByte((byte) Session.SSH_MSG_CHANNEL_EOF);
+      buf.putInt(i);
+      synchronized (this) {
+        if (!close)
+          getSession().write(packet);
+      }
+    } catch (Exception e) {
+      // System.err.println("Channel.eof");
+      // e.printStackTrace();
+    }
+    /*
+     * if(!isConnected()){ disconnect(); }
+     */
+  }
+
+  /*
+   * http://www1.ietf.org/internet-drafts/draft-ietf-secsh-connect-24.txt
+   *
+   * 5.3 Closing a Channel When a party will no longer send more data to a channel, it SHOULD send
+   * SSH_MSG_CHANNEL_EOF.
+   *
+   * byte SSH_MSG_CHANNEL_EOF uint32 recipient_channel
+   *
+   * No explicit response is sent to this message. However, the application may send EOF to whatever
+   * is at the other end of the channel. Note that the channel remains open after this message, and
+   * more data may still be sent in the other direction. This message does not consume window space
+   * and can be sent even if no window space is available.
+   *
+   * When either party wishes to terminate the channel, it sends SSH_MSG_CHANNEL_CLOSE. Upon
+   * receiving this message, a party MUST send back a SSH_MSG_CHANNEL_CLOSE unless it has already
+   * sent this message for the channel. The channel is considered closed for a party when it has
+   * both sent and received SSH_MSG_CHANNEL_CLOSE, and the party may then reuse the channel number.
+   * A party MAY send SSH_MSG_CHANNEL_CLOSE without having sent or received SSH_MSG_CHANNEL_EOF.
+   *
+   * byte SSH_MSG_CHANNEL_CLOSE uint32 recipient_channel
+   *
+   * This message does not consume window space and can be sent even if no window space is
+   * available.
+   *
+   * It is recommended that any data sent before this message is delivered to the actual
+   * destination, if possible.
+   */
+
+  void close() {
+    if (close)
+      return;
+    close = true;
+    eof_local = eof_remote = true;
+
+    int i = getRecipient();
+    if (i == -1)
+      return;
+
+    try {
+      Buffer buf = new Buffer(100);
+      Packet packet = new Packet(buf);
+      packet.reset();
+      buf.putByte((byte) Session.SSH_MSG_CHANNEL_CLOSE);
+      buf.putInt(i);
+      synchronized (this) {
+        getSession().write(packet);
+      }
+    } catch (Exception e) {
+      // e.printStackTrace();
+    }
+  }
+
+  public boolean isClosed() {
+    return close;
+  }
+
+  static void disconnect(Session session) {
+    Channel[] channels = null;
+    int count = 0;
+    synchronized (pool) {
+      channels = new Channel[pool.size()];
+      for (int i = 0; i < pool.size(); i++) {
+        try {
+          Channel c = pool.elementAt(i);
+          if (c.session == session) {
+            channels[count++] = c;
+          }
+        } catch (Exception e) {
+        }
+      }
+    }
+    for (int i = 0; i < count; i++) {
+      channels[i].disconnect();
+    }
+  }
+
+  public void disconnect() {
+    // System.err.println(this+":disconnect "+io+" "+connected);
+    // Thread.dumpStack();
+
+    try {
+
+      synchronized (this) {
+        if (!connected) {
+          return;
+        }
+        connected = false;
+      }
+
+      close();
+
+      eof_remote = eof_local = true;
+
+      thread = null;
+
+      try {
+        if (io != null) {
+          io.close();
+        }
+      } catch (Exception e) {
+        // e.printStackTrace();
+      }
+      // io=null;
+    } finally {
+      Channel.del(this);
+    }
+  }
+
+  public boolean isConnected() {
+    Session _session = this.session;
+    if (_session != null) {
+      return _session.isConnected() && connected;
+    }
+    return false;
+  }
+
+  public void sendSignal(String signal) throws Exception {
+    RequestSignal request = new RequestSignal();
+    request.setSignal(signal);
+    request.request(getSession(), this);
+  }
+
+  // public String toString(){
+  // return "Channel: type="+new
+  // String(type)+",id="+id+",recipient="+recipient+",window_size="+window_size+",packet_size="+packet_size;
+  // }
+
+  /*
+   * class OutputThread extends Thread{ Channel c; OutputThread(Channel c){ this.c=c;} public void
+   * run(){c.output_thread();} }
+   */
+
+  static class PassiveInputStream extends MyPipedInputStream {
+    PipedOutputStream os;
+
+    PassiveInputStream(PipedOutputStream out, int size) throws IOException {
+      super(out, size);
+      this.os = out;
+    }
+
+    PassiveInputStream(PipedOutputStream out) throws IOException {
+      super(out);
+      this.os = out;
+    }
+
+    @Override
+    public void close() throws IOException {
+      if (this.os != null) {
+        this.os.close();
+      }
+      this.os = null;
+    }
+  }
+
+  static class PassiveOutputStream extends PipedOutputStream {
+    private MyPipedInputStream _sink = null;
+
+    PassiveOutputStream(PipedInputStream in, boolean resizable_buffer) throws IOException {
+      super(in);
+      if (resizable_buffer && (in instanceof MyPipedInputStream)) {
+        this._sink = (MyPipedInputStream) in;
+      }
+    }
+
+    @Override
+    public void write(int b) throws IOException {
+      if (_sink != null) {
+        _sink.checkSpace(1);
+      }
+      super.write(b);
+    }
+
+    @Override
+    public void write(byte[] b, int off, int len) throws IOException {
+      if (_sink != null) {
+        _sink.checkSpace(len);
+      }
+      super.write(b, off, len);
+    }
+  }
+
+  void setExitStatus(int status) {
+    exitstatus = status;
+  }
+
+  public int getExitStatus() {
+    return exitstatus;
+  }
+
+  void setSession(Session session) {
+    this.session = session;
+  }
+
+  public Session getSession() throws JSchException {
+    Session _session = session;
+    if (_session == null) {
+      throw new JSchException("session is not available");
+    }
+    return _session;
+  }
+
+  public int getId() {
+    return id;
+  }
+
+  protected void sendOpenConfirmation() throws Exception {
+    Buffer buf = new Buffer(200);
+    Packet packet = new Packet(buf);
+    packet.reset();
+    buf.putByte((byte) SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
+    buf.putInt(getRecipient());
+    buf.putInt(id);
+    buf.putInt(lwsize);
+    buf.putInt(lmpsize);
+    getSession().write(packet);
+  }
+
+  protected void sendOpenFailure(int reasoncode) {
+    try {
+      Buffer buf = new Buffer(200);
+      Packet packet = new Packet(buf);
+      packet.reset();
+      buf.putByte((byte) SSH_MSG_CHANNEL_OPEN_FAILURE);
+      buf.putInt(getRecipient());
+      buf.putInt(reasoncode);
+      buf.putString(Util.str2byte("open failed"));
+      buf.putString(Util.empty);
+      getSession().write(packet);
+    } catch (Exception e) {
+    }
+  }
+
+  protected Packet genChannelOpenPacket() {
+    Buffer buf = new Buffer(200);
+    Packet packet = new Packet(buf);
+    // byte SSH_MSG_CHANNEL_OPEN(90)
+    // string channel type //
+    // uint32 sender channel // 0
+    // uint32 initial window size // 0x100000(65536)
+    // uint32 maxmum packet size // 0x4000(16384)
+    packet.reset();
+    buf.putByte((byte) 90);
+    buf.putString(this.type);
+    buf.putInt(this.id);
+    buf.putInt(this.lwsize);
+    buf.putInt(this.lmpsize);
+    return packet;
+  }
+
+  protected void sendChannelOpen() throws Exception {
+    Session _session = getSession();
+    if (!_session.isConnected()) {
+      throw new JSchException("session is down");
+    }
+
+    Packet packet = genChannelOpenPacket();
+    _session.write(packet);
+
+    int retry = 2000;
+    long start = System.currentTimeMillis();
+    long timeout = connectTimeout;
+    if (timeout != 0L)
+      retry = 1;
+    synchronized (this) {
+      while (this.getRecipient() == -1 && _session.isConnected() && retry > 0) {
+        if (timeout > 0L) {
+          if ((System.currentTimeMillis() - start) > timeout) {
+            retry = 0;
+            continue;
+          }
+        }
+        try {
+          long t = timeout == 0L ? 10L : timeout;
+          this.notifyme = 1;
+          wait(t);
+        } catch (InterruptedException e) {
+        } finally {
+          this.notifyme = 0;
+        }
+        retry--;
+      }
+    }
+    if (!_session.isConnected()) {
+      throw new JSchException("session is down");
+    }
+    if (this.getRecipient() == -1) { // timeout
+      throw new JSchException("channel is not opened.");
+    }
+    if (this.open_confirmation == false) { // SSH_MSG_CHANNEL_OPEN_FAILURE
+      throw new JSchException("channel is not opened.");
+    }
+    connected = true;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelAgentForwarding.java

@@ -0,0 +1,268 @@
+/*
+ * Copyright (c) 2006-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.IOException;
+import java.util.Vector;
+
+class ChannelAgentForwarding extends Channel {
+
+  private static final int LOCAL_WINDOW_SIZE_MAX = 0x20000;
+  private static final int LOCAL_MAXIMUM_PACKET_SIZE = 0x4000;
+
+  private static final byte SSH_AGENTC_REQUEST_RSA_IDENTITIES = 1;
+  private static final byte SSH_AGENT_RSA_IDENTITIES_ANSWER = 2;
+  private static final byte SSH_AGENTC_RSA_CHALLENGE = 3;
+  private static final byte SSH_AGENT_RSA_RESPONSE = 4;
+  private static final byte SSH_AGENT_FAILURE = 5;
+  private static final byte SSH_AGENT_SUCCESS = 6;
+  private static final byte SSH_AGENTC_ADD_RSA_IDENTITY = 7;
+  private static final byte SSH_AGENTC_REMOVE_RSA_IDENTITY = 8;
+  private static final byte SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES = 9;
+
+  private static final byte SSH2_AGENTC_REQUEST_IDENTITIES = 11;
+  private static final byte SSH2_AGENT_IDENTITIES_ANSWER = 12;
+  private static final byte SSH2_AGENTC_SIGN_REQUEST = 13;
+  private static final byte SSH2_AGENT_SIGN_RESPONSE = 14;
+  private static final byte SSH2_AGENTC_ADD_IDENTITY = 17;
+  private static final byte SSH2_AGENTC_REMOVE_IDENTITY = 18;
+  private static final byte SSH2_AGENTC_REMOVE_ALL_IDENTITIES = 19;
+  private static final byte SSH2_AGENT_FAILURE = 30;
+
+  // static private final int SSH_AGENT_OLD_SIGNATURE=0x1;
+  private static final int SSH_AGENT_RSA_SHA2_256 = 0x2;
+  private static final int SSH_AGENT_RSA_SHA2_512 = 0x4;
+
+  private Buffer rbuf = null;
+  private Buffer wbuf = null;
+  private Packet packet = null;
+  private Buffer mbuf = null;
+
+  ChannelAgentForwarding() {
+    super();
+
+    lwsize_max = LOCAL_WINDOW_SIZE_MAX;
+    lwsize = LOCAL_WINDOW_SIZE_MAX;
+    lmpsize = LOCAL_MAXIMUM_PACKET_SIZE;
+
+    type = Util.str2byte("auth-agent@openssh.com");
+    rbuf = new Buffer();
+    rbuf.reset();
+    // wbuf=new Buffer(rmpsize);
+    // packet=new Packet(wbuf);
+    mbuf = new Buffer();
+    connected = true;
+  }
+
+  @Override
+  void run() {
+    try {
+      sendOpenConfirmation();
+    } catch (Exception e) {
+      close = true;
+      disconnect();
+    }
+  }
+
+  @Override
+  void write(byte[] foo, int s, int l) throws IOException {
+
+    if (packet == null) {
+      wbuf = new Buffer(rmpsize);
+      packet = new Packet(wbuf);
+    }
+
+    rbuf.shift();
+    if (rbuf.buffer.length < rbuf.index + l) {
+      byte[] newbuf = new byte[rbuf.s + l];
+      System.arraycopy(rbuf.buffer, 0, newbuf, 0, rbuf.buffer.length);
+      rbuf.buffer = newbuf;
+    }
+
+    rbuf.putByte(foo, s, l);
+
+    int mlen = rbuf.getInt();
+    if (mlen > rbuf.getLength()) {
+      rbuf.s -= 4;
+      return;
+    }
+
+    int typ = rbuf.getByte();
+
+    Session _session = null;
+    try {
+      _session = getSession();
+    } catch (JSchException e) {
+      throw new IOException(e.toString(), e);
+    }
+
+    IdentityRepository irepo = _session.getIdentityRepository();
+    UserInfo userinfo = _session.getUserInfo();
+
+    mbuf.reset();
+
+    if (typ == SSH2_AGENTC_REQUEST_IDENTITIES) {
+      mbuf.putByte(SSH2_AGENT_IDENTITIES_ANSWER);
+      Vector<Identity> identities = irepo.getIdentities();
+      synchronized (identities) {
+        int count = 0;
+        for (int i = 0; i < identities.size(); i++) {
+          Identity identity = identities.elementAt(i);
+          if (identity.getPublicKeyBlob() != null)
+            count++;
+        }
+        mbuf.putInt(count);
+        for (int i = 0; i < identities.size(); i++) {
+          Identity identity = identities.elementAt(i);
+          byte[] pubkeyblob = identity.getPublicKeyBlob();
+          if (pubkeyblob == null)
+            continue;
+          mbuf.putString(pubkeyblob);
+          mbuf.putString(Util.empty);
+        }
+      }
+    } else if (typ == SSH_AGENTC_REQUEST_RSA_IDENTITIES) {
+      mbuf.putByte(SSH_AGENT_RSA_IDENTITIES_ANSWER);
+      mbuf.putInt(0);
+    } else if (typ == SSH2_AGENTC_SIGN_REQUEST) {
+      byte[] blob = rbuf.getString();
+      byte[] data = rbuf.getString();
+      int flags = rbuf.getInt();
+
+      // if((flags & SSH_AGENT_OLD_SIGNATURE)!=0){ // old OpenSSH 2.0, 2.1
+      // datafellows = SSH_BUG_SIGBLOB;
+      // }
+
+      Vector<Identity> identities = irepo.getIdentities();
+      Identity identity = null;
+      synchronized (identities) {
+        for (int i = 0; i < identities.size(); i++) {
+          Identity _identity = identities.elementAt(i);
+          if (_identity.getPublicKeyBlob() == null)
+            continue;
+          if (!Util.array_equals(blob, _identity.getPublicKeyBlob())) {
+            continue;
+          }
+          if (_identity.isEncrypted()) {
+            if (userinfo == null)
+              continue;
+            while (_identity.isEncrypted()) {
+              if (!userinfo.promptPassphrase("Passphrase for " + _identity.getName())) {
+                break;
+              }
+
+              String _passphrase = userinfo.getPassphrase();
+              if (_passphrase == null) {
+                break;
+              }
+
+              byte[] passphrase = Util.str2byte(_passphrase);
+              try {
+                if (_identity.setPassphrase(passphrase)) {
+                  break;
+                }
+              } catch (JSchException e) {
+                break;
+              }
+            }
+          }
+
+          if (!_identity.isEncrypted()) {
+            identity = _identity;
+            break;
+          }
+        }
+      }
+
+      byte[] signature = null;
+
+      if (identity != null) {
+        Buffer kbuf = new Buffer(blob);
+        String keytype = Util.byte2str(kbuf.getString());
+        if (keytype.equals("ssh-rsa")) {
+          if ((flags & SSH_AGENT_RSA_SHA2_256) != 0) {
+            signature = identity.getSignature(data, "rsa-sha2-256");
+          } else if ((flags & SSH_AGENT_RSA_SHA2_512) != 0) {
+            signature = identity.getSignature(data, "rsa-sha2-512");
+          } else {
+            signature = identity.getSignature(data, "ssh-rsa");
+          }
+        } else {
+          signature = identity.getSignature(data);
+        }
+      }
+
+      if (signature == null) {
+        mbuf.putByte(SSH2_AGENT_FAILURE);
+      } else {
+        mbuf.putByte(SSH2_AGENT_SIGN_RESPONSE);
+        mbuf.putString(signature);
+      }
+    } else if (typ == SSH2_AGENTC_REMOVE_IDENTITY) {
+      byte[] blob = rbuf.getString();
+      irepo.remove(blob);
+      mbuf.putByte(SSH_AGENT_SUCCESS);
+    } else if (typ == SSH_AGENTC_REMOVE_ALL_RSA_IDENTITIES) {
+      mbuf.putByte(SSH_AGENT_SUCCESS);
+    } else if (typ == SSH2_AGENTC_REMOVE_ALL_IDENTITIES) {
+      irepo.removeAll();
+      mbuf.putByte(SSH_AGENT_SUCCESS);
+    } else if (typ == SSH2_AGENTC_ADD_IDENTITY) {
+      int fooo = rbuf.getLength();
+      byte[] tmp = new byte[fooo];
+      rbuf.getByte(tmp);
+      boolean result = irepo.add(tmp);
+      mbuf.putByte(result ? SSH_AGENT_SUCCESS : SSH_AGENT_FAILURE);
+    } else {
+      rbuf.skip(rbuf.getLength() - 1);
+      mbuf.putByte(SSH_AGENT_FAILURE);
+    }
+
+    byte[] response = new byte[mbuf.getLength()];
+    mbuf.getByte(response);
+    send(response);
+  }
+
+  private void send(byte[] message) {
+    packet.reset();
+    wbuf.putByte((byte) Session.SSH_MSG_CHANNEL_DATA);
+    wbuf.putInt(recipient);
+    wbuf.putInt(4 + message.length);
+    wbuf.putString(message);
+
+    try {
+      getSession().write(packet, this, 4 + message.length);
+    } catch (Exception e) {
+    }
+  }
+
+  @Override
+  void eof_remote() {
+    super.eof_remote();
+    eof();
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelDirectStreamLocal.java

@@ -0,0 +1,65 @@
+package com.jcraft.jsch;
+
+import static com.jcraft.jsch.Session.SSH_MSG_CHANNEL_OPEN;
+
+/**
+ * Extension of {@link ChannelDirectTCPIP} to support socket forwarding.
+ *
+ * <p>
+ * https://raw.githubusercontent.com/openssh/openssh-portable/master/PROTOCOL
+ */
+public class ChannelDirectStreamLocal extends ChannelDirectTCPIP {
+
+  private static final int LOCAL_WINDOW_SIZE_MAX = 0x20000;
+  private static final int LOCAL_MAXIMUM_PACKET_SIZE = 0x4000;
+  private static final byte[] _type = Util.str2byte("direct-streamlocal@openssh.com");
+
+  private String socketPath;
+
+  ChannelDirectStreamLocal() {
+    super();
+    type = _type;
+    lwsize_max = LOCAL_WINDOW_SIZE_MAX;
+    lwsize = LOCAL_WINDOW_SIZE_MAX;
+    lmpsize = LOCAL_MAXIMUM_PACKET_SIZE;
+  }
+
+  @Override
+  protected Packet genChannelOpenPacket() {
+
+    if (socketPath == null) {
+      session.getLogger().log(Logger.FATAL, "socketPath must be set");
+      throw new RuntimeException("socketPath must be set");
+    }
+
+    /*
+     * Similar to direct-tcpip, direct-streamlocal is sent by the client to request that the server
+     * make a connection to a Unix domain socket.
+     *
+     * byte SSH_MSG_CHANNEL_OPEN string "direct-streamlocal@openssh.com" uint32 sender channel
+     * uint32 initial window size uint32 maximum packet size string socket path string reserved
+     * uint32 reserved
+     */
+
+    Buffer buf = new Buffer(50 + socketPath.length() + session.getBufferMargin());
+    Packet packet = new Packet(buf);
+    packet.reset();
+    buf.putByte((byte) SSH_MSG_CHANNEL_OPEN);
+    buf.putString(this.type);
+    buf.putInt(id);
+    buf.putInt(lwsize);
+    buf.putInt(lmpsize);
+    buf.putString(Util.str2byte(socketPath));
+    buf.putString(Util.str2byte(originator_IP_address));
+    buf.putInt(originator_port);
+    return packet;
+  }
+
+  public String getSocketPath() {
+    return socketPath;
+  }
+
+  public void setSocketPath(String socketPath) {
+    this.socketPath = socketPath;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelDirectTCPIP.java

@@ -0,0 +1,175 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public class ChannelDirectTCPIP extends Channel {
+
+  private static final int LOCAL_WINDOW_SIZE_MAX = 0x20000;
+  private static final int LOCAL_MAXIMUM_PACKET_SIZE = 0x4000;
+  private static final byte[] _type = Util.str2byte("direct-tcpip");
+  String host;
+  int port;
+
+  String originator_IP_address = "127.0.0.1";
+  int originator_port = 0;
+
+  ChannelDirectTCPIP() {
+    super();
+    type = _type;
+    lwsize_max = LOCAL_WINDOW_SIZE_MAX;
+    lwsize = LOCAL_WINDOW_SIZE_MAX;
+    lmpsize = LOCAL_MAXIMUM_PACKET_SIZE;
+  }
+
+  @Override
+  void init() {
+    io = new IO();
+  }
+
+  @Override
+  public void connect(int connectTimeout) throws JSchException {
+    this.connectTimeout = connectTimeout;
+    try {
+      Session _session = getSession();
+      if (!_session.isConnected()) {
+        throw new JSchException("session is down");
+      }
+
+      if (io.in != null) {
+        thread = new Thread(this::run);
+        thread.setName("DirectTCPIP thread " + _session.getHost());
+        if (_session.daemon_thread) {
+          thread.setDaemon(_session.daemon_thread);
+        }
+        thread.start();
+      } else {
+        sendChannelOpen();
+      }
+    } catch (Exception e) {
+      io.close();
+      io = null;
+      Channel.del(this);
+      if (e instanceof JSchException) {
+        throw (JSchException) e;
+      }
+    }
+  }
+
+  @Override
+  void run() {
+
+    try {
+      sendChannelOpen();
+
+      Buffer buf = new Buffer(rmpsize);
+      Packet packet = new Packet(buf);
+      Session _session = getSession();
+      int i = 0;
+
+      while (isConnected() && thread != null && io != null && io.in != null) {
+        i = io.in.read(buf.buffer, 14, buf.buffer.length - 14 - _session.getBufferMargin());
+        if (i <= 0) {
+          eof();
+          break;
+        }
+        packet.reset();
+        buf.putByte((byte) Session.SSH_MSG_CHANNEL_DATA);
+        buf.putInt(recipient);
+        buf.putInt(i);
+        buf.skip(i);
+        synchronized (this) {
+          if (close)
+            break;
+          _session.write(packet, this, i);
+        }
+      }
+    } catch (Exception e) {
+      // Whenever an exception is thrown by sendChannelOpen(),
+      // 'connected' is false.
+      if (!connected) {
+        connected = true;
+      }
+      disconnect();
+      return;
+    }
+
+    eof();
+    disconnect();
+  }
+
+  @Override
+  public void setInputStream(InputStream in) {
+    io.setInputStream(in);
+  }
+
+  @Override
+  public void setOutputStream(OutputStream out) {
+    io.setOutputStream(out);
+  }
+
+  public void setHost(String host) {
+    this.host = host;
+  }
+
+  public void setPort(int port) {
+    this.port = port;
+  }
+
+  public void setOrgIPAddress(String foo) {
+    this.originator_IP_address = foo;
+  }
+
+  public void setOrgPort(int foo) {
+    this.originator_port = foo;
+  }
+
+  @Override
+  protected Packet genChannelOpenPacket() {
+    Buffer buf = new Buffer(50 + // 6 + 4*8 + 12
+        host.length() + originator_IP_address.length() + session.getBufferMargin());
+    Packet packet = new Packet(buf);
+    // byte SSH_MSG_CHANNEL_OPEN(90)
+    // string channel type //
+    // uint32 sender channel // 0
+    // uint32 initial window size // 0x100000(65536)
+    // uint32 maxmum packet size // 0x4000(16384)
+    packet.reset();
+    buf.putByte((byte) 90);
+    buf.putString(this.type);
+    buf.putInt(id);
+    buf.putInt(lwsize);
+    buf.putInt(lmpsize);
+    buf.putString(Util.str2byte(host));
+    buf.putInt(port);
+    buf.putString(Util.str2byte(originator_IP_address));
+    buf.putInt(originator_port);
+    return packet;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelExec.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public class ChannelExec extends ChannelSession {
+
+  byte[] command = new byte[0];
+
+  public ChannelExec() {
+  }
+
+  @Override
+  public void start() throws JSchException {
+    Session _session = getSession();
+    try {
+      sendRequests();
+      Request request = new RequestExec(command);
+      request.request(_session, this);
+    } catch (Exception e) {
+      if (e instanceof JSchException)
+        throw (JSchException) e;
+      throw new JSchException("ChannelExec", e);
+    }
+
+    if (io.in != null) {
+      thread = new Thread(this::run);
+      thread.setName("Exec thread " + _session.getHost());
+      if (_session.daemon_thread) {
+        thread.setDaemon(_session.daemon_thread);
+      }
+      thread.start();
+    }
+  }
+
+  public void setCommand(String command) {
+    this.command = Util.str2byte(command);
+  }
+
+  public void setCommand(byte[] command) {
+    this.command = command;
+  }
+
+  @Override
+  void init() throws JSchException {
+    io.setInputStream(getSession().in);
+    io.setOutputStream(getSession().out);
+  }
+
+  public void setErrStream(OutputStream out) {
+    setExtOutputStream(out);
+  }
+
+  public void setErrStream(OutputStream out, boolean dontclose) {
+    setExtOutputStream(out, dontclose);
+  }
+
+  public InputStream getErrStream() throws IOException {
+    return getExtInputStream();
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelForwardedTCPIP.java

@@ -0,0 +1,334 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.PipedOutputStream;
+import java.net.Socket;
+import java.util.Vector;
+
+public class ChannelForwardedTCPIP extends Channel {
+
+  private static Vector<Config> pool = new Vector<>();
+
+  private static final int LOCAL_WINDOW_SIZE_MAX = 0x20000;
+  // static private final int LOCAL_WINDOW_SIZE_MAX=0x100000;
+  private static final int LOCAL_MAXIMUM_PACKET_SIZE = 0x4000;
+
+  private static final int TIMEOUT = 10 * 1000;
+
+  private Socket socket = null;
+  private ForwardedTCPIPDaemon daemon = null;
+  private Config config = null;
+
+  ChannelForwardedTCPIP() {
+    super();
+    lwsize_max = LOCAL_WINDOW_SIZE_MAX;
+    lwsize = LOCAL_WINDOW_SIZE_MAX;
+    lmpsize = LOCAL_MAXIMUM_PACKET_SIZE;
+    io = new IO();
+    connected = true;
+  }
+
+  @Override
+  public void run() {
+    try {
+      if (config instanceof ConfigDaemon) {
+        ConfigDaemon _config = (ConfigDaemon) config;
+        Class<? extends ForwardedTCPIPDaemon> c =
+            Class.forName(_config.target).asSubclass(ForwardedTCPIPDaemon.class);
+        daemon = c.getDeclaredConstructor().newInstance();
+
+        PipedOutputStream out = new PipedOutputStream();
+        io.setInputStream(new PassiveInputStream(out, 32 * 1024), false);
+
+        daemon.setChannel(this, getInputStream(), out);
+        daemon.setArg(_config.arg);
+        new Thread(daemon).start();
+      } else {
+        ConfigLHost _config = (ConfigLHost) config;
+        socket =
+            (_config.factory == null) ? Util.createSocket(_config.target, _config.lport, TIMEOUT)
+                : _config.factory.createSocket(_config.target, _config.lport);
+        socket.setTcpNoDelay(true);
+        io.setInputStream(socket.getInputStream());
+        io.setOutputStream(socket.getOutputStream());
+      }
+      sendOpenConfirmation();
+    } catch (Exception e) {
+      sendOpenFailure(SSH_OPEN_ADMINISTRATIVELY_PROHIBITED);
+      close = true;
+      disconnect();
+      return;
+    }
+
+    thread = Thread.currentThread();
+    Buffer buf = new Buffer(rmpsize);
+    Packet packet = new Packet(buf);
+    int i = 0;
+    try {
+      Session _session = getSession();
+      while (thread != null && io != null && io.in != null) {
+        i = io.in.read(buf.buffer, 14, buf.buffer.length - 14 - _session.getBufferMargin());
+        if (i <= 0) {
+          eof();
+          break;
+        }
+        packet.reset();
+        buf.putByte((byte) Session.SSH_MSG_CHANNEL_DATA);
+        buf.putInt(recipient);
+        buf.putInt(i);
+        buf.skip(i);
+        synchronized (this) {
+          if (close)
+            break;
+          _session.write(packet, this, i);
+        }
+      }
+    } catch (Exception e) {
+      // System.err.println(e);
+    }
+    // thread=null;
+    // eof();
+    disconnect();
+  }
+
+  @Override
+  void getData(Buffer buf) {
+    setRecipient(buf.getInt());
+    setRemoteWindowSize(buf.getUInt());
+    setRemotePacketSize(buf.getInt());
+    byte[] addr = buf.getString();
+    int port = buf.getInt();
+    byte[] orgaddr = buf.getString();
+    int orgport = buf.getInt();
+
+    /*
+     * System.err.println("addr: "+Util.byte2str(addr)); System.err.println("port: "+port);
+     * System.err.println("orgaddr: "+Util.byte2str(orgaddr));
+     * System.err.println("orgport: "+orgport);
+     */
+
+    Session _session = null;
+    try {
+      _session = getSession();
+    } catch (JSchException e) {
+      // session has been already down.
+    }
+
+    this.config = getPort(_session, Util.byte2str(addr), port);
+    if (this.config == null)
+      this.config = getPort(_session, null, port);
+
+    if (this.config == null) {
+      if (_session.getLogger().isEnabled(Logger.ERROR)) {
+        _session.getLogger().log(Logger.ERROR,
+            "ChannelForwardedTCPIP: " + Util.byte2str(addr) + ":" + port + " is not registered.");
+      }
+    }
+  }
+
+  private static Config getPort(Session session, String address_to_bind, int rport) {
+    synchronized (pool) {
+      for (int i = 0; i < pool.size(); i++) {
+        Config bar = pool.elementAt(i);
+        if (bar.session != session)
+          continue;
+        if (bar.rport != rport) {
+          if (bar.rport != 0 || bar.allocated_rport != rport)
+            continue;
+        }
+        if (address_to_bind != null && !bar.address_to_bind.equals(address_to_bind))
+          continue;
+        return bar;
+      }
+      return null;
+    }
+  }
+
+  static String[] getPortForwarding(Session session) {
+    Vector<String> foo = new Vector<>();
+    synchronized (pool) {
+      for (int i = 0; i < pool.size(); i++) {
+        Config config = pool.elementAt(i);
+        if (config.session == session) {
+          if (config instanceof ConfigDaemon)
+            foo.addElement(config.allocated_rport + ":" + config.target + ":");
+          else
+            foo.addElement(
+                config.allocated_rport + ":" + config.target + ":" + ((ConfigLHost) config).lport);
+        }
+      }
+    }
+    String[] bar = new String[foo.size()];
+    for (int i = 0; i < foo.size(); i++) {
+      bar[i] = foo.elementAt(i);
+    }
+    return bar;
+  }
+
+  static String normalize(String address) {
+    if (address == null) {
+      return "localhost";
+    } else if (address.length() == 0 || address.equals("*")) {
+      return "";
+    } else {
+      return address;
+    }
+  }
+
+  static void addPort(Session session, String _address_to_bind, int port, int allocated_port,
+      String target, int lport, SocketFactory factory) throws JSchException {
+    String address_to_bind = normalize(_address_to_bind);
+    synchronized (pool) {
+      if (getPort(session, address_to_bind, port) != null) {
+        throw new JSchException("PortForwardingR: remote port " + port + " is already registered.");
+      }
+      ConfigLHost config = new ConfigLHost();
+      config.session = session;
+      config.rport = port;
+      config.allocated_rport = allocated_port;
+      config.target = target;
+      config.lport = lport;
+      config.address_to_bind = address_to_bind;
+      config.factory = factory;
+      pool.addElement(config);
+    }
+  }
+
+  static void addPort(Session session, String _address_to_bind, int port, int allocated_port,
+      String daemon, Object[] arg) throws JSchException {
+    String address_to_bind = normalize(_address_to_bind);
+    synchronized (pool) {
+      if (getPort(session, address_to_bind, port) != null) {
+        throw new JSchException("PortForwardingR: remote port " + port + " is already registered.");
+      }
+      ConfigDaemon config = new ConfigDaemon();
+      config.session = session;
+      config.rport = port;
+      config.allocated_rport = port;
+      config.target = daemon;
+      config.arg = arg;
+      config.address_to_bind = address_to_bind;
+      pool.addElement(config);
+    }
+  }
+
+  static void delPort(ChannelForwardedTCPIP c) {
+    Session _session = null;
+    try {
+      _session = c.getSession();
+    } catch (JSchException e) {
+      // session has been already down.
+    }
+    if (_session != null && c.config != null)
+      delPort(_session, c.config.rport);
+  }
+
+  static void delPort(Session session, int rport) {
+    delPort(session, null, rport);
+  }
+
+  static void delPort(Session session, String address_to_bind, int rport) {
+    synchronized (pool) {
+      Config foo = getPort(session, normalize(address_to_bind), rport);
+      if (foo == null)
+        foo = getPort(session, null, rport);
+      if (foo == null)
+        return;
+      pool.removeElement(foo);
+      if (address_to_bind == null) {
+        address_to_bind = foo.address_to_bind;
+      }
+      if (address_to_bind == null) {
+        address_to_bind = "0.0.0.0";
+      }
+    }
+
+    Buffer buf = new Buffer(200); // ??
+    Packet packet = new Packet(buf);
+
+    try {
+      // byte SSH_MSG_GLOBAL_REQUEST 80
+      // string "cancel-tcpip-forward"
+      // boolean want_reply
+      // string address_to_bind (e.g. "127.0.0.1")
+      // uint32 port number to bind
+      packet.reset();
+      buf.putByte((byte) 80 /* SSH_MSG_GLOBAL_REQUEST */);
+      buf.putString(Util.str2byte("cancel-tcpip-forward"));
+      buf.putByte((byte) 0);
+      buf.putString(Util.str2byte(address_to_bind));
+      buf.putInt(rport);
+      session.write(packet);
+    } catch (Exception e) {
+      // throw new JSchException(e.toString(), e);
+    }
+  }
+
+  static void delPort(Session session) {
+    int[] rport = null;
+    int count = 0;
+    synchronized (pool) {
+      rport = new int[pool.size()];
+      for (int i = 0; i < pool.size(); i++) {
+        Config config = pool.elementAt(i);
+        if (config.session == session) {
+          rport[count++] = config.rport; // ((Integer)bar[1]).intValue();
+        }
+      }
+    }
+    for (int i = 0; i < count; i++) {
+      delPort(session, rport[i]);
+    }
+  }
+
+  public int getRemotePort() {
+    return (config != null ? config.rport : 0);
+  }
+
+  private void setSocketFactory(SocketFactory factory) {
+    if (config != null && (config instanceof ConfigLHost))
+      ((ConfigLHost) config).factory = factory;
+  }
+
+  abstract static class Config {
+    Session session;
+    int rport;
+    int allocated_rport;
+    String address_to_bind;
+    String target;
+  }
+
+  static class ConfigDaemon extends Config {
+    Object[] arg;
+  }
+
+  static class ConfigLHost extends Config {
+    int lport;
+    SocketFactory factory;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelSession.java

@@ -0,0 +1,265 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.util.Enumeration;
+import java.util.Hashtable;
+
+class ChannelSession extends Channel {
+  private static byte[] _session = Util.str2byte("session");
+
+  protected boolean agent_forwarding = false;
+  protected boolean xforwading = false;
+  protected Hashtable<byte[], byte[]> env = null;
+
+  protected boolean pty = false;
+
+  protected String ttype = "vt100";
+  protected int tcol = 80;
+  protected int trow = 24;
+  protected int twp = 640;
+  protected int thp = 480;
+  protected byte[] terminal_mode = null;
+
+  ChannelSession() {
+    super();
+    type = _session;
+    io = new IO();
+  }
+
+  /**
+   * Enable the agent forwarding.
+   *
+   * @param enable
+   */
+  public void setAgentForwarding(boolean enable) {
+    agent_forwarding = enable;
+  }
+
+  /**
+   * Enable the X11 forwarding. Refer to RFC4254 6.3.1. Requesting X11 Forwarding.
+   *
+   * @param enable
+   */
+  @Override
+  public void setXForwarding(boolean enable) {
+    xforwading = enable;
+  }
+
+  /**
+   * @deprecated Use #setEnv(String, String) or #setEnv(byte[], byte[]) instead.
+   * @see #setEnv(String, String)
+   * @see #setEnv(byte[], byte[])
+   */
+  @Deprecated
+  public void setEnv(Hashtable<byte[], byte[]> env) {
+    synchronized (this) {
+      this.env = env;
+    }
+  }
+
+  /**
+   * Set the environment variable. If <code>name</code> and <code>value</code> are needed to be
+   * passed to the remote in your favorite encoding, use {@link #setEnv(byte[], byte[])}. Refer to
+   * RFC4254 6.4 Environment Variable Passing.
+   *
+   * @param name A name for environment variable.
+   * @param value A value for environment variable.
+   */
+  public void setEnv(String name, String value) {
+    setEnv(Util.str2byte(name), Util.str2byte(value));
+  }
+
+  /**
+   * Set the environment variable. Refer to RFC4254 6.4 Environment Variable Passing.
+   *
+   * @param name A name of environment variable.
+   * @param value A value of environment variable.
+   * @see #setEnv(String, String)
+   */
+  public void setEnv(byte[] name, byte[] value) {
+    synchronized (this) {
+      getEnv().put(name, value);
+    }
+  }
+
+  private Hashtable<byte[], byte[]> getEnv() {
+    if (env == null)
+      env = new Hashtable<>();
+    return env;
+  }
+
+  /**
+   * Allocate a Pseudo-Terminal. Refer to RFC4254 6.2. Requesting a Pseudo-Terminal.
+   *
+   * @param enable
+   */
+  public void setPty(boolean enable) {
+    pty = enable;
+  }
+
+  /**
+   * Set the terminal mode.
+   *
+   * @param terminal_mode
+   */
+  public void setTerminalMode(byte[] terminal_mode) {
+    this.terminal_mode = terminal_mode;
+  }
+
+  /**
+   * Change the window dimension interactively. Refer to RFC4254 6.7. Window Dimension Change
+   * Message.
+   *
+   * @param col terminal width, columns
+   * @param row terminal height, rows
+   * @param wp terminal width, pixels
+   * @param hp terminal height, pixels
+   */
+  public void setPtySize(int col, int row, int wp, int hp) {
+    setPtyType(this.ttype, col, row, wp, hp);
+    if (!pty || !isConnected()) {
+      return;
+    }
+    try {
+      RequestWindowChange request = new RequestWindowChange();
+      request.setSize(col, row, wp, hp);
+      request.request(getSession(), this);
+    } catch (Exception e) {
+      // System.err.println("ChannelSessio.setPtySize: "+e);
+    }
+  }
+
+  /**
+   * Set the terminal type. This method is not effective after Channel#connect().
+   *
+   * @param ttype terminal type(for example, "vt100")
+   * @see #setPtyType(String, int, int, int, int)
+   */
+  public void setPtyType(String ttype) {
+    setPtyType(ttype, 80, 24, 640, 480);
+  }
+
+  /**
+   * Set the terminal type. This method is not effective after Channel#connect().
+   *
+   * @param ttype terminal type(for example, "vt100")
+   * @param col terminal width, columns
+   * @param row terminal height, rows
+   * @param wp terminal width, pixels
+   * @param hp terminal height, pixels
+   */
+  public void setPtyType(String ttype, int col, int row, int wp, int hp) {
+    this.ttype = ttype;
+    this.tcol = col;
+    this.trow = row;
+    this.twp = wp;
+    this.thp = hp;
+  }
+
+  protected void sendRequests() throws Exception {
+    Session _session = getSession();
+    Request request;
+    if (agent_forwarding) {
+      request = new RequestAgentForwarding();
+      request.request(_session, this);
+    }
+
+    if (xforwading) {
+      request = new RequestX11();
+      request.request(_session, this);
+    }
+
+    if (pty) {
+      request = new RequestPtyReq();
+      ((RequestPtyReq) request).setTType(ttype);
+      ((RequestPtyReq) request).setTSize(tcol, trow, twp, thp);
+      if (terminal_mode != null) {
+        ((RequestPtyReq) request).setTerminalMode(terminal_mode);
+      }
+      request.request(_session, this);
+    }
+
+    if (env != null) {
+      for (Enumeration<byte[]> _env = env.keys(); _env.hasMoreElements();) {
+        byte[] name = _env.nextElement();
+        byte[] value = env.get(name);
+        request = new RequestEnv();
+        ((RequestEnv) request).setEnv(toByteArray(name), toByteArray(value));
+        request.request(_session, this);
+      }
+    }
+  }
+
+  private byte[] toByteArray(Object o) {
+    if (o instanceof String) {
+      return Util.str2byte((String) o);
+    }
+    return (byte[]) o;
+  }
+
+  @Override
+  void run() {
+    // System.err.println(this+":run >");
+
+    Buffer buf = new Buffer(rmpsize);
+    Packet packet = new Packet(buf);
+    int i = -1;
+    try {
+      Session _session = getSession();
+      while (isConnected() && thread != null && io != null && io.in != null) {
+        i = io.in.read(buf.buffer, 14, buf.buffer.length - 14 - _session.getBufferMargin());
+        if (i == 0)
+          continue;
+        if (i == -1) {
+          eof();
+          break;
+        }
+        if (close)
+          break;
+        // System.out.println("write: "+i);
+        packet.reset();
+        buf.putByte((byte) Session.SSH_MSG_CHANNEL_DATA);
+        buf.putInt(recipient);
+        buf.putInt(i);
+        buf.skip(i);
+        _session.write(packet, this, i);
+      }
+    } catch (Exception e) {
+      // System.err.println("# ChannelExec.run");
+      // e.printStackTrace();
+    }
+    Thread _thread = thread;
+    if (_thread != null) {
+      synchronized (_thread) {
+        _thread.notifyAll();
+      }
+    }
+    thread = null;
+    // System.err.println(this+":run <");
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelShell.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public class ChannelShell extends ChannelSession {
+
+  ChannelShell() {
+    super();
+    pty = true;
+  }
+
+  @Override
+  public void start() throws JSchException {
+    Session _session = getSession();
+    try {
+      sendRequests();
+
+      Request request = new RequestShell();
+      request.request(_session, this);
+    } catch (Exception e) {
+      if (e instanceof JSchException)
+        throw (JSchException) e;
+      throw new JSchException("ChannelShell", e);
+    }
+
+    if (io.in != null) {
+      thread = new Thread(this::run);
+      thread.setName("Shell for " + _session.host);
+      if (_session.daemon_thread) {
+        thread.setDaemon(_session.daemon_thread);
+      }
+      thread.start();
+    }
+  }
+
+  @Override
+  void init() throws JSchException {
+    io.setInputStream(getSession().in);
+    io.setOutputStream(getSession().out);
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelSubsystem.java

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2005-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public class ChannelSubsystem extends ChannelSession {
+  boolean want_reply = true;
+  String subsystem = "";
+
+  public ChannelSubsystem() {
+  }
+
+  public void setWantReply(boolean foo) {
+    want_reply = foo;
+  }
+
+  public void setSubsystem(String foo) {
+    subsystem = foo;
+  }
+
+  @Override
+  public void start() throws JSchException {
+    Session _session = getSession();
+    try {
+      Request request;
+      if (xforwading) {
+        request = new RequestX11();
+        request.request(_session, this);
+      }
+      if (pty) {
+        request = new RequestPtyReq();
+        request.request(_session, this);
+      }
+      request = new RequestSubsystem();
+      ((RequestSubsystem) request).request(_session, this, subsystem, want_reply);
+    } catch (Exception e) {
+      if (e instanceof JSchException) {
+        throw (JSchException) e;
+      }
+      throw new JSchException("ChannelSubsystem", e);
+    }
+    if (io.in != null) {
+      thread = new Thread(this::run);
+      thread.setName("Subsystem for " + _session.host);
+      if (_session.daemon_thread) {
+        thread.setDaemon(_session.daemon_thread);
+      }
+      thread.start();
+    }
+  }
+
+  @Override
+  void init() throws JSchException {
+    io.setInputStream(getSession().in);
+    io.setOutputStream(getSession().out);
+  }
+
+  public void setErrStream(OutputStream out) {
+    setExtOutputStream(out);
+  }
+
+  public InputStream getErrStream() throws IOException {
+    return getExtInputStream();
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ChannelX11.java

@@ -0,0 +1,262 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.IOException;
+import java.net.Socket;
+import java.util.Hashtable;
+
+class ChannelX11 extends Channel {
+
+  private static final int LOCAL_WINDOW_SIZE_MAX = 0x20000;
+  private static final int LOCAL_MAXIMUM_PACKET_SIZE = 0x4000;
+
+  private static final int TIMEOUT = 10 * 1000;
+
+  private static String host = "127.0.0.1";
+  private static int port = 6000;
+
+  private boolean init = true;
+
+  static byte[] cookie = null;
+  private static byte[] cookie_hex = null;
+
+  private static Hashtable<Session, byte[]> faked_cookie_pool = new Hashtable<>();
+  private static Hashtable<Session, byte[]> faked_cookie_hex_pool = new Hashtable<>();
+
+  private static byte[] table = {0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x61,
+      0x62, 0x63, 0x64, 0x65, 0x66};
+
+  private Socket socket = null;
+
+  static int revtable(byte foo) {
+    for (int i = 0; i < table.length; i++) {
+      if (table[i] == foo)
+        return i;
+    }
+    return 0;
+  }
+
+  static void setCookie(String foo) {
+    cookie_hex = Util.str2byte(foo);
+    cookie = new byte[16];
+    for (int i = 0; i < 16; i++) {
+      cookie[i] = (byte) (((revtable(cookie_hex[i * 2]) << 4) & 0xf0)
+          | ((revtable(cookie_hex[i * 2 + 1])) & 0xf));
+    }
+  }
+
+  static void setHost(String foo) {
+    host = foo;
+  }
+
+  static void setPort(int foo) {
+    port = foo;
+  }
+
+  static byte[] getFakedCookie(Session session) {
+    synchronized (faked_cookie_hex_pool) {
+      byte[] foo = faked_cookie_hex_pool.get(session);
+      if (foo == null) {
+        Random random = Session.random;
+        foo = new byte[16];
+        synchronized (random) {
+          random.fill(foo, 0, 16);
+        }
+        /*
+         * System.err.print("faked_cookie: "); for(int i=0; i<foo.length; i++){
+         * System.err.print(Integer.toHexString(foo[i]&0xff)+":"); } System.err.println("");
+         */
+        faked_cookie_pool.put(session, foo);
+        byte[] bar = new byte[32];
+        for (int i = 0; i < 16; i++) {
+          bar[2 * i] = table[(foo[i] >>> 4) & 0xf];
+          bar[2 * i + 1] = table[(foo[i]) & 0xf];
+        }
+        faked_cookie_hex_pool.put(session, bar);
+        foo = bar;
+      }
+      return foo;
+    }
+  }
+
+  static void removeFakedCookie(Session session) {
+    synchronized (faked_cookie_hex_pool) {
+      faked_cookie_hex_pool.remove(session);
+      faked_cookie_pool.remove(session);
+    }
+  }
+
+  ChannelX11() {
+    super();
+
+    lwsize_max = LOCAL_WINDOW_SIZE_MAX;
+    lwsize = LOCAL_WINDOW_SIZE_MAX;
+    lmpsize = LOCAL_MAXIMUM_PACKET_SIZE;
+
+    type = Util.str2byte("x11");
+
+    connected = true;
+    /*
+     * try{ socket=Util.createSocket(host, port, TIMEOUT); socket.setTcpNoDelay(true); io=new IO();
+     * io.setInputStream(socket.getInputStream()); io.setOutputStream(socket.getOutputStream()); }
+     * catch(Exception e){ //System.err.println(e); }
+     */
+  }
+
+  @Override
+  void run() {
+
+    try {
+      socket = Util.createSocket(host, port, TIMEOUT);
+      socket.setTcpNoDelay(true);
+      io = new IO();
+      io.setInputStream(socket.getInputStream());
+      io.setOutputStream(socket.getOutputStream());
+      sendOpenConfirmation();
+    } catch (Exception e) {
+      sendOpenFailure(SSH_OPEN_ADMINISTRATIVELY_PROHIBITED);
+      close = true;
+      disconnect();
+      return;
+    }
+
+    thread = Thread.currentThread();
+    Buffer buf = new Buffer(rmpsize);
+    Packet packet = new Packet(buf);
+    int i = 0;
+    try {
+      Session _session = getSession();
+      while (thread != null && io != null && io.in != null) {
+        i = io.in.read(buf.buffer, 14, buf.buffer.length - 14 - _session.getBufferMargin());
+        if (i <= 0) {
+          eof();
+          break;
+        }
+        if (close)
+          break;
+        packet.reset();
+        buf.putByte((byte) Session.SSH_MSG_CHANNEL_DATA);
+        buf.putInt(recipient);
+        buf.putInt(i);
+        buf.skip(i);
+        _session.write(packet, this, i);
+      }
+    } catch (Exception e) {
+      // System.err.println(e);
+    }
+    disconnect();
+  }
+
+  private byte[] cache = new byte[0];
+
+  private byte[] addCache(byte[] foo, int s, int l) {
+    byte[] bar = new byte[cache.length + l];
+    System.arraycopy(foo, s, bar, cache.length, l);
+    if (cache.length > 0)
+      System.arraycopy(cache, 0, bar, 0, cache.length);
+    cache = bar;
+    return cache;
+  }
+
+  @Override
+  void write(byte[] foo, int s, int l) throws IOException {
+    // if(eof_local)return;
+
+    if (init) {
+
+      Session _session = null;
+      try {
+        _session = getSession();
+      } catch (JSchException e) {
+        throw new IOException(e.toString(), e);
+      }
+
+      foo = addCache(foo, s, l);
+      s = 0;
+      l = foo.length;
+
+      if (l < 9)
+        return;
+
+      int plen = (foo[s + 6] & 0xff) * 256 + (foo[s + 7] & 0xff);
+      int dlen = (foo[s + 8] & 0xff) * 256 + (foo[s + 9] & 0xff);
+
+      if ((foo[s] & 0xff) == 0x42) {
+      } else if ((foo[s] & 0xff) == 0x6c) {
+        plen = ((plen >>> 8) & 0xff) | ((plen << 8) & 0xff00);
+        dlen = ((dlen >>> 8) & 0xff) | ((dlen << 8) & 0xff00);
+      } else {
+        // ??
+      }
+
+      if (l < 12 + plen + ((-plen) & 3) + dlen)
+        return;
+
+      byte[] bar = new byte[dlen];
+      System.arraycopy(foo, s + 12 + plen + ((-plen) & 3), bar, 0, dlen);
+      byte[] faked_cookie = null;
+
+      synchronized (faked_cookie_pool) {
+        faked_cookie = faked_cookie_pool.get(_session);
+      }
+
+      /*
+       * System.err.print("faked_cookie: "); for(int i=0; i<faked_cookie.length; i++){
+       * System.err.print(Integer.toHexString(faked_cookie[i]&0xff)+":"); } System.err.println("");
+       * System.err.print("bar: "); for(int i=0; i<bar.length; i++){
+       * System.err.print(Integer.toHexString(bar[i]&0xff)+":"); } System.err.println("");
+       */
+
+      if (equals(bar, faked_cookie)) {
+        if (cookie != null)
+          System.arraycopy(cookie, 0, foo, s + 12 + plen + ((-plen) & 3), dlen);
+      } else {
+        // System.err.println("wrong cookie");
+        thread = null;
+        eof();
+        io.close();
+        disconnect();
+      }
+      init = false;
+      io.put(foo, s, l);
+      cache = null;
+      return;
+    }
+    io.put(foo, s, l);
+  }
+
+  private static boolean equals(byte[] foo, byte[] bar) {
+    if (foo.length != bar.length)
+      return false;
+    for (int i = 0; i < foo.length; i++) {
+      if (foo[i] != bar[i])
+        return false;
+    }
+    return true;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/Cipher.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface Cipher {
+  static int ENCRYPT_MODE = 0;
+  static int DECRYPT_MODE = 1;
+
+  int getIVSize();
+
+  int getBlockSize();
+
+  default int getTagSize() {
+    return 0;
+  }
+
+  void init(int mode, byte[] key, byte[] iv) throws Exception;
+
+  default void update(int foo) throws Exception {}
+
+  void update(byte[] foo, int s1, int len, byte[] bar, int s2) throws Exception;
+
+  default void updateAAD(byte[] foo, int s1, int len) throws Exception {}
+
+  default void doFinal(byte[] foo, int s1, int len, byte[] bar, int s2) throws Exception {}
+
+  boolean isCBC();
+
+  default boolean isAEAD() {
+    return false;
+  }
+
+  default boolean isChaCha20() {
+    return false;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/CipherNone.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class CipherNone implements Cipher {
+  private static final int ivsize = 8;
+  private static final int bsize = 16;
+
+  @Override
+  public int getIVSize() {
+    return ivsize;
+  }
+
+  @Override
+  public int getBlockSize() {
+    return bsize;
+  }
+
+  @Override
+  public void init(int mode, byte[] key, byte[] iv) throws Exception {}
+
+  @Override
+  public void update(byte[] foo, int s1, int len, byte[] bar, int s2) throws Exception {}
+
+  @Override
+  public boolean isCBC() {
+    return false;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/Compression.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface Compression {
+  public static final int INFLATER = 0;
+  public static final int DEFLATER = 1;
+
+  default void init(int type, int level, Session session) {
+    init(type, level);
+  }
+
+  default void end() {}
+
+  void init(int type, int level);
+
+  byte[] compress(byte[] buf, int start, int[] len);
+
+  byte[] uncompress(byte[] buf, int start, int[] len);
+}

files-jsch/src/main/java/com/jcraft/jsch/ConfigRepository.java

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2013-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface ConfigRepository {
+
+  public Config getConfig(String host);
+
+  public interface Config {
+    public String getHostname();
+
+    public String getUser();
+
+    public int getPort();
+
+    public String getValue(String key);
+
+    public String[] getValues(String key);
+  }
+
+  static final Config defaultConfig = new Config() {
+    @Override
+    public String getHostname() {
+      return null;
+    }
+
+    @Override
+    public String getUser() {
+      return null;
+    }
+
+    @Override
+    public int getPort() {
+      return -1;
+    }
+
+    @Override
+    public String getValue(String key) {
+      return null;
+    }
+
+    @Override
+    public String[] getValues(String key) {
+      return null;
+    }
+  };
+
+  static final ConfigRepository nullConfig = new ConfigRepository() {
+    @Override
+    public Config getConfig(String host) {
+      return defaultConfig;
+    }
+  };
+}

files-jsch/src/main/java/com/jcraft/jsch/DH.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface DH {
+  void init() throws Exception;
+
+  void setP(byte[] p);
+
+  void setG(byte[] g);
+
+  byte[] getE() throws Exception;
+
+  void setF(byte[] f);
+
+  byte[] getK() throws Exception;
+
+  // checkRange() will check if e and f are in [1,p-1]
+  // as defined at https://tools.ietf.org/html/rfc4253#section-8
+  void checkRange() throws Exception;
+}

files-jsch/src/main/java/com/jcraft/jsch/DH25519.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DH25519 extends DHXEC {
+  public DH25519() {
+    sha_name = "sha-256";
+    curve_name = "X25519";
+    key_len = 32;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DH25519SNTRUP761.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DH25519SNTRUP761 extends DHXECKEM {
+  public DH25519SNTRUP761() {
+    kem_name = "sntrup761";
+    sha_name = "sha-512";
+    curve_name = "X25519";
+    kem_pubkey_len = 1158;
+    kem_encap_len = 1039;
+    xec_key_len = 32;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DH448.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DH448 extends DHXEC {
+  public DH448() {
+    sha_name = "sha-512";
+    curve_name = "X448";
+    key_len = 56;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHEC256.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHEC256 extends DHECN {
+  public DHEC256() {
+    sha_name = "sha-256";
+    key_size = 256;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHEC384.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHEC384 extends DHECN {
+  public DHEC384() {
+    sha_name = "sha-384";
+    key_size = 384;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHEC521.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHEC521 extends DHECN {
+  public DHEC521() {
+    sha_name = "sha-512";
+    key_size = 521;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHECN.java

@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+abstract class DHECN extends KeyExchange {
+
+  private static final int SSH_MSG_KEX_ECDH_INIT = 30;
+  private static final int SSH_MSG_KEX_ECDH_REPLY = 31;
+  private int state;
+
+  byte[] Q_C;
+
+  byte[] V_S;
+  byte[] V_C;
+  byte[] I_S;
+  byte[] I_C;
+
+  byte[] e;
+
+  private Buffer buf;
+  private Packet packet;
+
+  private ECDH ecdh;
+
+  protected String sha_name;
+  protected int key_size;
+
+  @Override
+  public void init(Session session, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
+      throws Exception {
+    this.V_S = V_S;
+    this.V_C = V_C;
+    this.I_S = I_S;
+    this.I_C = I_C;
+
+    try {
+      Class<? extends HASH> c = Class.forName(session.getConfig(sha_name)).asSubclass(HASH.class);
+      sha = c.getDeclaredConstructor().newInstance();
+      sha.init();
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    buf = new Buffer();
+    packet = new Packet(buf);
+
+    packet.reset();
+    buf.putByte((byte) SSH_MSG_KEX_ECDH_INIT);
+
+    try {
+      Class<? extends ECDH> c =
+          Class.forName(session.getConfig("ecdh-sha2-nistp")).asSubclass(ECDH.class);
+      ecdh = c.getDeclaredConstructor().newInstance();
+      ecdh.init(key_size);
+
+      Q_C = ecdh.getQ();
+      buf.putString(Q_C);
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    if (V_S == null) { // This is a really ugly hack for Session.checkKexes ;-(
+      return;
+    }
+
+    session.write(packet);
+
+    if (session.getLogger().isEnabled(Logger.INFO)) {
+      session.getLogger().log(Logger.INFO, "SSH_MSG_KEX_ECDH_INIT sent");
+      session.getLogger().log(Logger.INFO, "expecting SSH_MSG_KEX_ECDH_REPLY");
+    }
+
+    state = SSH_MSG_KEX_ECDH_REPLY;
+  }
+
+  @Override
+  public boolean next(Buffer _buf) throws Exception {
+    int i, j;
+    switch (state) {
+      case SSH_MSG_KEX_ECDH_REPLY:
+        // The server responds with:
+        // byte SSH_MSG_KEX_ECDH_REPLY
+        // string K_S, server's public host key
+        // string Q_S, server's ephemeral public key octet string
+        // string the signature on the exchange hash
+        j = _buf.getInt();
+        j = _buf.getByte();
+        j = _buf.getByte();
+        if (j != SSH_MSG_KEX_ECDH_REPLY) {
+          if (session.getLogger().isEnabled(Logger.ERROR)) {
+            session.getLogger().log(Logger.ERROR, "type: must be SSH_MSG_KEX_ECDH_REPLY " + j);
+          }
+          return false;
+        }
+
+        K_S = _buf.getString();
+
+        byte[] Q_S = _buf.getString();
+
+        byte[][] r_s = KeyPairECDSA.fromPoint(Q_S);
+
+        // RFC 5656,
+        // 4. ECDH Key Exchange
+        // All elliptic curve public keys MUST be validated after they are
+        // received. An example of a validation algorithm can be found in
+        // Section 3.2.2 of [SEC1]. If a key fails validation,
+        // the key exchange MUST fail.
+        if (!ecdh.validate(r_s[0], r_s[1])) {
+          return false;
+        }
+
+        K = encodeAsMPInt(normalize(ecdh.getSecret(r_s[0], r_s[1])));
+
+        byte[] sig_of_H = _buf.getString();
+
+        // The hash H is computed as the HASH hash of the concatenation of the
+        // following:
+        // string V_C, client's identification string (CR and LF excluded)
+        // string V_S, server's identification string (CR and LF excluded)
+        // string I_C, payload of the client's SSH_MSG_KEXINIT
+        // string I_S, payload of the server's SSH_MSG_KEXINIT
+        // string K_S, server's public host key
+        // string Q_C, client's ephemeral public key octet string
+        // string Q_S, server's ephemeral public key octet string
+        // mpint K, shared secret
+
+        // This value is called the exchange hash, and it is used to authenti-
+        // cate the key exchange.
+        buf.reset();
+        buf.putString(V_C);
+        buf.putString(V_S);
+        buf.putString(I_C);
+        buf.putString(I_S);
+        buf.putString(K_S);
+        buf.putString(Q_C);
+        buf.putString(Q_S);
+        byte[] foo = new byte[buf.getLength()];
+        buf.getByte(foo);
+
+        sha.update(foo, 0, foo.length);
+        sha.update(K, 0, K.length);
+        H = sha.digest();
+
+        i = 0;
+        j = 0;
+        j = ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000)
+            | ((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
+        String alg = Util.byte2str(K_S, i, j);
+        i += j;
+
+        boolean result = verify(alg, K_S, i, sig_of_H);
+
+        state = STATE_END;
+        return result;
+    }
+    return false;
+  }
+
+  @Override
+  public int getState() {
+    return state;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG1.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG1 extends DHGN {
+
+  static final byte[] g = {2};
+  static final byte[] p = {(byte) 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xC9, (byte) 0x0F, (byte) 0xDA,
+      (byte) 0xA2, (byte) 0x21, (byte) 0x68, (byte) 0xC2, (byte) 0x34, (byte) 0xC4, (byte) 0xC6,
+      (byte) 0x62, (byte) 0x8B, (byte) 0x80, (byte) 0xDC, (byte) 0x1C, (byte) 0xD1, (byte) 0x29,
+      (byte) 0x02, (byte) 0x4E, (byte) 0x08, (byte) 0x8A, (byte) 0x67, (byte) 0xCC, (byte) 0x74,
+      (byte) 0x02, (byte) 0x0B, (byte) 0xBE, (byte) 0xA6, (byte) 0x3B, (byte) 0x13, (byte) 0x9B,
+      (byte) 0x22, (byte) 0x51, (byte) 0x4A, (byte) 0x08, (byte) 0x79, (byte) 0x8E, (byte) 0x34,
+      (byte) 0x04, (byte) 0xDD, (byte) 0xEF, (byte) 0x95, (byte) 0x19, (byte) 0xB3, (byte) 0xCD,
+      (byte) 0x3A, (byte) 0x43, (byte) 0x1B, (byte) 0x30, (byte) 0x2B, (byte) 0x0A, (byte) 0x6D,
+      (byte) 0xF2, (byte) 0x5F, (byte) 0x14, (byte) 0x37, (byte) 0x4F, (byte) 0xE1, (byte) 0x35,
+      (byte) 0x6D, (byte) 0x6D, (byte) 0x51, (byte) 0xC2, (byte) 0x45, (byte) 0xE4, (byte) 0x85,
+      (byte) 0xB5, (byte) 0x76, (byte) 0x62, (byte) 0x5E, (byte) 0x7E, (byte) 0xC6, (byte) 0xF4,
+      (byte) 0x4C, (byte) 0x42, (byte) 0xE9, (byte) 0xA6, (byte) 0x37, (byte) 0xED, (byte) 0x6B,
+      (byte) 0x0B, (byte) 0xFF, (byte) 0x5C, (byte) 0xB6, (byte) 0xF4, (byte) 0x06, (byte) 0xB7,
+      (byte) 0xED, (byte) 0xEE, (byte) 0x38, (byte) 0x6B, (byte) 0xFB, (byte) 0x5A, (byte) 0x89,
+      (byte) 0x9F, (byte) 0xA5, (byte) 0xAE, (byte) 0x9F, (byte) 0x24, (byte) 0x11, (byte) 0x7C,
+      (byte) 0x4B, (byte) 0x1F, (byte) 0xE6, (byte) 0x49, (byte) 0x28, (byte) 0x66, (byte) 0x51,
+      (byte) 0xEC, (byte) 0xE6, (byte) 0x53, (byte) 0x81, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
+
+  @Override
+  byte[] G() {
+    return g;
+  }
+
+  @Override
+  byte[] P() {
+    return p;
+  }
+
+  @Override
+  String sha_name() {
+    return "sha-1";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG14.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG14 extends DHG14N {
+
+  @Override
+  String sha_name() {
+    return "sha-1";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG14224.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG14224 extends DHG14N {
+
+  @Override
+  String sha_name() {
+    return "sha-224";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG14256.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG14256 extends DHG14N {
+
+  @Override
+  String sha_name() {
+    return "sha-256";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG14N.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+abstract class DHG14N extends DHGN {
+
+  static final byte[] g = {2};
+  static final byte[] p = {(byte) 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xC9, (byte) 0x0F, (byte) 0xDA,
+      (byte) 0xA2, (byte) 0x21, (byte) 0x68, (byte) 0xC2, (byte) 0x34, (byte) 0xC4, (byte) 0xC6,
+      (byte) 0x62, (byte) 0x8B, (byte) 0x80, (byte) 0xDC, (byte) 0x1C, (byte) 0xD1, (byte) 0x29,
+      (byte) 0x02, (byte) 0x4E, (byte) 0x08, (byte) 0x8A, (byte) 0x67, (byte) 0xCC, (byte) 0x74,
+      (byte) 0x02, (byte) 0x0B, (byte) 0xBE, (byte) 0xA6, (byte) 0x3B, (byte) 0x13, (byte) 0x9B,
+      (byte) 0x22, (byte) 0x51, (byte) 0x4A, (byte) 0x08, (byte) 0x79, (byte) 0x8E, (byte) 0x34,
+      (byte) 0x04, (byte) 0xDD, (byte) 0xEF, (byte) 0x95, (byte) 0x19, (byte) 0xB3, (byte) 0xCD,
+      (byte) 0x3A, (byte) 0x43, (byte) 0x1B, (byte) 0x30, (byte) 0x2B, (byte) 0x0A, (byte) 0x6D,
+      (byte) 0xF2, (byte) 0x5F, (byte) 0x14, (byte) 0x37, (byte) 0x4F, (byte) 0xE1, (byte) 0x35,
+      (byte) 0x6D, (byte) 0x6D, (byte) 0x51, (byte) 0xC2, (byte) 0x45, (byte) 0xE4, (byte) 0x85,
+      (byte) 0xB5, (byte) 0x76, (byte) 0x62, (byte) 0x5E, (byte) 0x7E, (byte) 0xC6, (byte) 0xF4,
+      (byte) 0x4C, (byte) 0x42, (byte) 0xE9, (byte) 0xA6, (byte) 0x37, (byte) 0xED, (byte) 0x6B,
+      (byte) 0x0B, (byte) 0xFF, (byte) 0x5C, (byte) 0xB6, (byte) 0xF4, (byte) 0x06, (byte) 0xB7,
+      (byte) 0xED, (byte) 0xEE, (byte) 0x38, (byte) 0x6B, (byte) 0xFB, (byte) 0x5A, (byte) 0x89,
+      (byte) 0x9F, (byte) 0xA5, (byte) 0xAE, (byte) 0x9F, (byte) 0x24, (byte) 0x11, (byte) 0x7C,
+      (byte) 0x4B, (byte) 0x1F, (byte) 0xE6, (byte) 0x49, (byte) 0x28, (byte) 0x66, (byte) 0x51,
+      (byte) 0xEC, (byte) 0xE4, (byte) 0x5B, (byte) 0x3D, (byte) 0xC2, (byte) 0x00, (byte) 0x7C,
+      (byte) 0xB8, (byte) 0xA1, (byte) 0x63, (byte) 0xBF, (byte) 0x05, (byte) 0x98, (byte) 0xDA,
+      (byte) 0x48, (byte) 0x36, (byte) 0x1C, (byte) 0x55, (byte) 0xD3, (byte) 0x9A, (byte) 0x69,
+      (byte) 0x16, (byte) 0x3F, (byte) 0xA8, (byte) 0xFD, (byte) 0x24, (byte) 0xCF, (byte) 0x5F,
+      (byte) 0x83, (byte) 0x65, (byte) 0x5D, (byte) 0x23, (byte) 0xDC, (byte) 0xA3, (byte) 0xAD,
+      (byte) 0x96, (byte) 0x1C, (byte) 0x62, (byte) 0xF3, (byte) 0x56, (byte) 0x20, (byte) 0x85,
+      (byte) 0x52, (byte) 0xBB, (byte) 0x9E, (byte) 0xD5, (byte) 0x29, (byte) 0x07, (byte) 0x70,
+      (byte) 0x96, (byte) 0x96, (byte) 0x6D, (byte) 0x67, (byte) 0x0C, (byte) 0x35, (byte) 0x4E,
+      (byte) 0x4A, (byte) 0xBC, (byte) 0x98, (byte) 0x04, (byte) 0xF1, (byte) 0x74, (byte) 0x6C,
+      (byte) 0x08, (byte) 0xCA, (byte) 0x18, (byte) 0x21, (byte) 0x7C, (byte) 0x32, (byte) 0x90,
+      (byte) 0x5E, (byte) 0x46, (byte) 0x2E, (byte) 0x36, (byte) 0xCE, (byte) 0x3B, (byte) 0xE3,
+      (byte) 0x9E, (byte) 0x77, (byte) 0x2C, (byte) 0x18, (byte) 0x0E, (byte) 0x86, (byte) 0x03,
+      (byte) 0x9B, (byte) 0x27, (byte) 0x83, (byte) 0xA2, (byte) 0xEC, (byte) 0x07, (byte) 0xA2,
+      (byte) 0x8F, (byte) 0xB5, (byte) 0xC5, (byte) 0x5D, (byte) 0xF0, (byte) 0x6F, (byte) 0x4C,
+      (byte) 0x52, (byte) 0xC9, (byte) 0xDE, (byte) 0x2B, (byte) 0xCB, (byte) 0xF6, (byte) 0x95,
+      (byte) 0x58, (byte) 0x17, (byte) 0x18, (byte) 0x39, (byte) 0x95, (byte) 0x49, (byte) 0x7C,
+      (byte) 0xEA, (byte) 0x95, (byte) 0x6A, (byte) 0xE5, (byte) 0x15, (byte) 0xD2, (byte) 0x26,
+      (byte) 0x18, (byte) 0x98, (byte) 0xFA, (byte) 0x05, (byte) 0x10, (byte) 0x15, (byte) 0x72,
+      (byte) 0x8E, (byte) 0x5A, (byte) 0x8A, (byte) 0xAC, (byte) 0xAA, (byte) 0x68, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
+
+  @Override
+  byte[] G() {
+    return g;
+  }
+
+  @Override
+  byte[] P() {
+    return p;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG15.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG15 extends DHG15N {
+
+  @Override
+  String sha_name() {
+    return "sha-512";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG15256.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG15256 extends DHG15N {
+
+  @Override
+  String sha_name() {
+    return "sha-256";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG15384.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG15384 extends DHG15N {
+
+  @Override
+  String sha_name() {
+    return "sha-384";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG15N.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+abstract class DHG15N extends DHGN {
+
+  static final byte[] g = {2};
+  static final byte[] p = {(byte) 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xC9, (byte) 0x0F, (byte) 0xDA,
+      (byte) 0xA2, (byte) 0x21, (byte) 0x68, (byte) 0xC2, (byte) 0x34, (byte) 0xC4, (byte) 0xC6,
+      (byte) 0x62, (byte) 0x8B, (byte) 0x80, (byte) 0xDC, (byte) 0x1C, (byte) 0xD1, (byte) 0x29,
+      (byte) 0x02, (byte) 0x4E, (byte) 0x08, (byte) 0x8A, (byte) 0x67, (byte) 0xCC, (byte) 0x74,
+      (byte) 0x02, (byte) 0x0B, (byte) 0xBE, (byte) 0xA6, (byte) 0x3B, (byte) 0x13, (byte) 0x9B,
+      (byte) 0x22, (byte) 0x51, (byte) 0x4A, (byte) 0x08, (byte) 0x79, (byte) 0x8E, (byte) 0x34,
+      (byte) 0x04, (byte) 0xDD, (byte) 0xEF, (byte) 0x95, (byte) 0x19, (byte) 0xB3, (byte) 0xCD,
+      (byte) 0x3A, (byte) 0x43, (byte) 0x1B, (byte) 0x30, (byte) 0x2B, (byte) 0x0A, (byte) 0x6D,
+      (byte) 0xF2, (byte) 0x5F, (byte) 0x14, (byte) 0x37, (byte) 0x4F, (byte) 0xE1, (byte) 0x35,
+      (byte) 0x6D, (byte) 0x6D, (byte) 0x51, (byte) 0xC2, (byte) 0x45, (byte) 0xE4, (byte) 0x85,
+      (byte) 0xB5, (byte) 0x76, (byte) 0x62, (byte) 0x5E, (byte) 0x7E, (byte) 0xC6, (byte) 0xF4,
+      (byte) 0x4C, (byte) 0x42, (byte) 0xE9, (byte) 0xA6, (byte) 0x37, (byte) 0xED, (byte) 0x6B,
+      (byte) 0x0B, (byte) 0xFF, (byte) 0x5C, (byte) 0xB6, (byte) 0xF4, (byte) 0x06, (byte) 0xB7,
+      (byte) 0xED, (byte) 0xEE, (byte) 0x38, (byte) 0x6B, (byte) 0xFB, (byte) 0x5A, (byte) 0x89,
+      (byte) 0x9F, (byte) 0xA5, (byte) 0xAE, (byte) 0x9F, (byte) 0x24, (byte) 0x11, (byte) 0x7C,
+      (byte) 0x4B, (byte) 0x1F, (byte) 0xE6, (byte) 0x49, (byte) 0x28, (byte) 0x66, (byte) 0x51,
+      (byte) 0xEC, (byte) 0xE4, (byte) 0x5B, (byte) 0x3D, (byte) 0xC2, (byte) 0x00, (byte) 0x7C,
+      (byte) 0xB8, (byte) 0xA1, (byte) 0x63, (byte) 0xBF, (byte) 0x05, (byte) 0x98, (byte) 0xDA,
+      (byte) 0x48, (byte) 0x36, (byte) 0x1C, (byte) 0x55, (byte) 0xD3, (byte) 0x9A, (byte) 0x69,
+      (byte) 0x16, (byte) 0x3F, (byte) 0xA8, (byte) 0xFD, (byte) 0x24, (byte) 0xCF, (byte) 0x5F,
+      (byte) 0x83, (byte) 0x65, (byte) 0x5D, (byte) 0x23, (byte) 0xDC, (byte) 0xA3, (byte) 0xAD,
+      (byte) 0x96, (byte) 0x1C, (byte) 0x62, (byte) 0xF3, (byte) 0x56, (byte) 0x20, (byte) 0x85,
+      (byte) 0x52, (byte) 0xBB, (byte) 0x9E, (byte) 0xD5, (byte) 0x29, (byte) 0x07, (byte) 0x70,
+      (byte) 0x96, (byte) 0x96, (byte) 0x6D, (byte) 0x67, (byte) 0x0C, (byte) 0x35, (byte) 0x4E,
+      (byte) 0x4A, (byte) 0xBC, (byte) 0x98, (byte) 0x04, (byte) 0xF1, (byte) 0x74, (byte) 0x6C,
+      (byte) 0x08, (byte) 0xCA, (byte) 0x18, (byte) 0x21, (byte) 0x7C, (byte) 0x32, (byte) 0x90,
+      (byte) 0x5E, (byte) 0x46, (byte) 0x2E, (byte) 0x36, (byte) 0xCE, (byte) 0x3B, (byte) 0xE3,
+      (byte) 0x9E, (byte) 0x77, (byte) 0x2C, (byte) 0x18, (byte) 0x0E, (byte) 0x86, (byte) 0x03,
+      (byte) 0x9B, (byte) 0x27, (byte) 0x83, (byte) 0xA2, (byte) 0xEC, (byte) 0x07, (byte) 0xA2,
+      (byte) 0x8F, (byte) 0xB5, (byte) 0xC5, (byte) 0x5D, (byte) 0xF0, (byte) 0x6F, (byte) 0x4C,
+      (byte) 0x52, (byte) 0xC9, (byte) 0xDE, (byte) 0x2B, (byte) 0xCB, (byte) 0xF6, (byte) 0x95,
+      (byte) 0x58, (byte) 0x17, (byte) 0x18, (byte) 0x39, (byte) 0x95, (byte) 0x49, (byte) 0x7C,
+      (byte) 0xEA, (byte) 0x95, (byte) 0x6A, (byte) 0xE5, (byte) 0x15, (byte) 0xD2, (byte) 0x26,
+      (byte) 0x18, (byte) 0x98, (byte) 0xFA, (byte) 0x05, (byte) 0x10, (byte) 0x15, (byte) 0x72,
+      (byte) 0x8E, (byte) 0x5A, (byte) 0x8A, (byte) 0xAA, (byte) 0xC4, (byte) 0x2D, (byte) 0xAD,
+      (byte) 0x33, (byte) 0x17, (byte) 0x0D, (byte) 0x04, (byte) 0x50, (byte) 0x7A, (byte) 0x33,
+      (byte) 0xA8, (byte) 0x55, (byte) 0x21, (byte) 0xAB, (byte) 0xDF, (byte) 0x1C, (byte) 0xBA,
+      (byte) 0x64, (byte) 0xEC, (byte) 0xFB, (byte) 0x85, (byte) 0x04, (byte) 0x58, (byte) 0xDB,
+      (byte) 0xEF, (byte) 0x0A, (byte) 0x8A, (byte) 0xEA, (byte) 0x71, (byte) 0x57, (byte) 0x5D,
+      (byte) 0x06, (byte) 0x0C, (byte) 0x7D, (byte) 0xB3, (byte) 0x97, (byte) 0x0F, (byte) 0x85,
+      (byte) 0xA6, (byte) 0xE1, (byte) 0xE4, (byte) 0xC7, (byte) 0xAB, (byte) 0xF5, (byte) 0xAE,
+      (byte) 0x8C, (byte) 0xDB, (byte) 0x09, (byte) 0x33, (byte) 0xD7, (byte) 0x1E, (byte) 0x8C,
+      (byte) 0x94, (byte) 0xE0, (byte) 0x4A, (byte) 0x25, (byte) 0x61, (byte) 0x9D, (byte) 0xCE,
+      (byte) 0xE3, (byte) 0xD2, (byte) 0x26, (byte) 0x1A, (byte) 0xD2, (byte) 0xEE, (byte) 0x6B,
+      (byte) 0xF1, (byte) 0x2F, (byte) 0xFA, (byte) 0x06, (byte) 0xD9, (byte) 0x8A, (byte) 0x08,
+      (byte) 0x64, (byte) 0xD8, (byte) 0x76, (byte) 0x02, (byte) 0x73, (byte) 0x3E, (byte) 0xC8,
+      (byte) 0x6A, (byte) 0x64, (byte) 0x52, (byte) 0x1F, (byte) 0x2B, (byte) 0x18, (byte) 0x17,
+      (byte) 0x7B, (byte) 0x20, (byte) 0x0C, (byte) 0xBB, (byte) 0xE1, (byte) 0x17, (byte) 0x57,
+      (byte) 0x7A, (byte) 0x61, (byte) 0x5D, (byte) 0x6C, (byte) 0x77, (byte) 0x09, (byte) 0x88,
+      (byte) 0xC0, (byte) 0xBA, (byte) 0xD9, (byte) 0x46, (byte) 0xE2, (byte) 0x08, (byte) 0xE2,
+      (byte) 0x4F, (byte) 0xA0, (byte) 0x74, (byte) 0xE5, (byte) 0xAB, (byte) 0x31, (byte) 0x43,
+      (byte) 0xDB, (byte) 0x5B, (byte) 0xFC, (byte) 0xE0, (byte) 0xFD, (byte) 0x10, (byte) 0x8E,
+      (byte) 0x4B, (byte) 0x82, (byte) 0xD1, (byte) 0x20, (byte) 0xA9, (byte) 0x3A, (byte) 0xD2,
+      (byte) 0xCA, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF};
+
+  @Override
+  byte[] G() {
+    return g;
+  }
+
+  @Override
+  byte[] P() {
+    return p;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG16.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG16 extends DHG16N {
+
+  @Override
+  String sha_name() {
+    return "sha-512";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG16384.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG16384 extends DHG16N {
+
+  @Override
+  String sha_name() {
+    return "sha-384";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG16N.java

@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+abstract class DHG16N extends DHGN {
+
+  static final byte[] g = {2};
+  static final byte[] p = {(byte) 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xC9, (byte) 0x0F, (byte) 0xDA,
+      (byte) 0xA2, (byte) 0x21, (byte) 0x68, (byte) 0xC2, (byte) 0x34, (byte) 0xC4, (byte) 0xC6,
+      (byte) 0x62, (byte) 0x8B, (byte) 0x80, (byte) 0xDC, (byte) 0x1C, (byte) 0xD1, (byte) 0x29,
+      (byte) 0x02, (byte) 0x4E, (byte) 0x08, (byte) 0x8A, (byte) 0x67, (byte) 0xCC, (byte) 0x74,
+      (byte) 0x02, (byte) 0x0B, (byte) 0xBE, (byte) 0xA6, (byte) 0x3B, (byte) 0x13, (byte) 0x9B,
+      (byte) 0x22, (byte) 0x51, (byte) 0x4A, (byte) 0x08, (byte) 0x79, (byte) 0x8E, (byte) 0x34,
+      (byte) 0x04, (byte) 0xDD, (byte) 0xEF, (byte) 0x95, (byte) 0x19, (byte) 0xB3, (byte) 0xCD,
+      (byte) 0x3A, (byte) 0x43, (byte) 0x1B, (byte) 0x30, (byte) 0x2B, (byte) 0x0A, (byte) 0x6D,
+      (byte) 0xF2, (byte) 0x5F, (byte) 0x14, (byte) 0x37, (byte) 0x4F, (byte) 0xE1, (byte) 0x35,
+      (byte) 0x6D, (byte) 0x6D, (byte) 0x51, (byte) 0xC2, (byte) 0x45, (byte) 0xE4, (byte) 0x85,
+      (byte) 0xB5, (byte) 0x76, (byte) 0x62, (byte) 0x5E, (byte) 0x7E, (byte) 0xC6, (byte) 0xF4,
+      (byte) 0x4C, (byte) 0x42, (byte) 0xE9, (byte) 0xA6, (byte) 0x37, (byte) 0xED, (byte) 0x6B,
+      (byte) 0x0B, (byte) 0xFF, (byte) 0x5C, (byte) 0xB6, (byte) 0xF4, (byte) 0x06, (byte) 0xB7,
+      (byte) 0xED, (byte) 0xEE, (byte) 0x38, (byte) 0x6B, (byte) 0xFB, (byte) 0x5A, (byte) 0x89,
+      (byte) 0x9F, (byte) 0xA5, (byte) 0xAE, (byte) 0x9F, (byte) 0x24, (byte) 0x11, (byte) 0x7C,
+      (byte) 0x4B, (byte) 0x1F, (byte) 0xE6, (byte) 0x49, (byte) 0x28, (byte) 0x66, (byte) 0x51,
+      (byte) 0xEC, (byte) 0xE4, (byte) 0x5B, (byte) 0x3D, (byte) 0xC2, (byte) 0x00, (byte) 0x7C,
+      (byte) 0xB8, (byte) 0xA1, (byte) 0x63, (byte) 0xBF, (byte) 0x05, (byte) 0x98, (byte) 0xDA,
+      (byte) 0x48, (byte) 0x36, (byte) 0x1C, (byte) 0x55, (byte) 0xD3, (byte) 0x9A, (byte) 0x69,
+      (byte) 0x16, (byte) 0x3F, (byte) 0xA8, (byte) 0xFD, (byte) 0x24, (byte) 0xCF, (byte) 0x5F,
+      (byte) 0x83, (byte) 0x65, (byte) 0x5D, (byte) 0x23, (byte) 0xDC, (byte) 0xA3, (byte) 0xAD,
+      (byte) 0x96, (byte) 0x1C, (byte) 0x62, (byte) 0xF3, (byte) 0x56, (byte) 0x20, (byte) 0x85,
+      (byte) 0x52, (byte) 0xBB, (byte) 0x9E, (byte) 0xD5, (byte) 0x29, (byte) 0x07, (byte) 0x70,
+      (byte) 0x96, (byte) 0x96, (byte) 0x6D, (byte) 0x67, (byte) 0x0C, (byte) 0x35, (byte) 0x4E,
+      (byte) 0x4A, (byte) 0xBC, (byte) 0x98, (byte) 0x04, (byte) 0xF1, (byte) 0x74, (byte) 0x6C,
+      (byte) 0x08, (byte) 0xCA, (byte) 0x18, (byte) 0x21, (byte) 0x7C, (byte) 0x32, (byte) 0x90,
+      (byte) 0x5E, (byte) 0x46, (byte) 0x2E, (byte) 0x36, (byte) 0xCE, (byte) 0x3B, (byte) 0xE3,
+      (byte) 0x9E, (byte) 0x77, (byte) 0x2C, (byte) 0x18, (byte) 0x0E, (byte) 0x86, (byte) 0x03,
+      (byte) 0x9B, (byte) 0x27, (byte) 0x83, (byte) 0xA2, (byte) 0xEC, (byte) 0x07, (byte) 0xA2,
+      (byte) 0x8F, (byte) 0xB5, (byte) 0xC5, (byte) 0x5D, (byte) 0xF0, (byte) 0x6F, (byte) 0x4C,
+      (byte) 0x52, (byte) 0xC9, (byte) 0xDE, (byte) 0x2B, (byte) 0xCB, (byte) 0xF6, (byte) 0x95,
+      (byte) 0x58, (byte) 0x17, (byte) 0x18, (byte) 0x39, (byte) 0x95, (byte) 0x49, (byte) 0x7C,
+      (byte) 0xEA, (byte) 0x95, (byte) 0x6A, (byte) 0xE5, (byte) 0x15, (byte) 0xD2, (byte) 0x26,
+      (byte) 0x18, (byte) 0x98, (byte) 0xFA, (byte) 0x05, (byte) 0x10, (byte) 0x15, (byte) 0x72,
+      (byte) 0x8E, (byte) 0x5A, (byte) 0x8A, (byte) 0xAA, (byte) 0xC4, (byte) 0x2D, (byte) 0xAD,
+      (byte) 0x33, (byte) 0x17, (byte) 0x0D, (byte) 0x04, (byte) 0x50, (byte) 0x7A, (byte) 0x33,
+      (byte) 0xA8, (byte) 0x55, (byte) 0x21, (byte) 0xAB, (byte) 0xDF, (byte) 0x1C, (byte) 0xBA,
+      (byte) 0x64, (byte) 0xEC, (byte) 0xFB, (byte) 0x85, (byte) 0x04, (byte) 0x58, (byte) 0xDB,
+      (byte) 0xEF, (byte) 0x0A, (byte) 0x8A, (byte) 0xEA, (byte) 0x71, (byte) 0x57, (byte) 0x5D,
+      (byte) 0x06, (byte) 0x0C, (byte) 0x7D, (byte) 0xB3, (byte) 0x97, (byte) 0x0F, (byte) 0x85,
+      (byte) 0xA6, (byte) 0xE1, (byte) 0xE4, (byte) 0xC7, (byte) 0xAB, (byte) 0xF5, (byte) 0xAE,
+      (byte) 0x8C, (byte) 0xDB, (byte) 0x09, (byte) 0x33, (byte) 0xD7, (byte) 0x1E, (byte) 0x8C,
+      (byte) 0x94, (byte) 0xE0, (byte) 0x4A, (byte) 0x25, (byte) 0x61, (byte) 0x9D, (byte) 0xCE,
+      (byte) 0xE3, (byte) 0xD2, (byte) 0x26, (byte) 0x1A, (byte) 0xD2, (byte) 0xEE, (byte) 0x6B,
+      (byte) 0xF1, (byte) 0x2F, (byte) 0xFA, (byte) 0x06, (byte) 0xD9, (byte) 0x8A, (byte) 0x08,
+      (byte) 0x64, (byte) 0xD8, (byte) 0x76, (byte) 0x02, (byte) 0x73, (byte) 0x3E, (byte) 0xC8,
+      (byte) 0x6A, (byte) 0x64, (byte) 0x52, (byte) 0x1F, (byte) 0x2B, (byte) 0x18, (byte) 0x17,
+      (byte) 0x7B, (byte) 0x20, (byte) 0x0C, (byte) 0xBB, (byte) 0xE1, (byte) 0x17, (byte) 0x57,
+      (byte) 0x7A, (byte) 0x61, (byte) 0x5D, (byte) 0x6C, (byte) 0x77, (byte) 0x09, (byte) 0x88,
+      (byte) 0xC0, (byte) 0xBA, (byte) 0xD9, (byte) 0x46, (byte) 0xE2, (byte) 0x08, (byte) 0xE2,
+      (byte) 0x4F, (byte) 0xA0, (byte) 0x74, (byte) 0xE5, (byte) 0xAB, (byte) 0x31, (byte) 0x43,
+      (byte) 0xDB, (byte) 0x5B, (byte) 0xFC, (byte) 0xE0, (byte) 0xFD, (byte) 0x10, (byte) 0x8E,
+      (byte) 0x4B, (byte) 0x82, (byte) 0xD1, (byte) 0x20, (byte) 0xA9, (byte) 0x21, (byte) 0x08,
+      (byte) 0x01, (byte) 0x1A, (byte) 0x72, (byte) 0x3C, (byte) 0x12, (byte) 0xA7, (byte) 0x87,
+      (byte) 0xE6, (byte) 0xD7, (byte) 0x88, (byte) 0x71, (byte) 0x9A, (byte) 0x10, (byte) 0xBD,
+      (byte) 0xBA, (byte) 0x5B, (byte) 0x26, (byte) 0x99, (byte) 0xC3, (byte) 0x27, (byte) 0x18,
+      (byte) 0x6A, (byte) 0xF4, (byte) 0xE2, (byte) 0x3C, (byte) 0x1A, (byte) 0x94, (byte) 0x68,
+      (byte) 0x34, (byte) 0xB6, (byte) 0x15, (byte) 0x0B, (byte) 0xDA, (byte) 0x25, (byte) 0x83,
+      (byte) 0xE9, (byte) 0xCA, (byte) 0x2A, (byte) 0xD4, (byte) 0x4C, (byte) 0xE8, (byte) 0xDB,
+      (byte) 0xBB, (byte) 0xC2, (byte) 0xDB, (byte) 0x04, (byte) 0xDE, (byte) 0x8E, (byte) 0xF9,
+      (byte) 0x2E, (byte) 0x8E, (byte) 0xFC, (byte) 0x14, (byte) 0x1F, (byte) 0xBE, (byte) 0xCA,
+      (byte) 0xA6, (byte) 0x28, (byte) 0x7C, (byte) 0x59, (byte) 0x47, (byte) 0x4E, (byte) 0x6B,
+      (byte) 0xC0, (byte) 0x5D, (byte) 0x99, (byte) 0xB2, (byte) 0x96, (byte) 0x4F, (byte) 0xA0,
+      (byte) 0x90, (byte) 0xC3, (byte) 0xA2, (byte) 0x23, (byte) 0x3B, (byte) 0xA1, (byte) 0x86,
+      (byte) 0x51, (byte) 0x5B, (byte) 0xE7, (byte) 0xED, (byte) 0x1F, (byte) 0x61, (byte) 0x29,
+      (byte) 0x70, (byte) 0xCE, (byte) 0xE2, (byte) 0xD7, (byte) 0xAF, (byte) 0xB8, (byte) 0x1B,
+      (byte) 0xDD, (byte) 0x76, (byte) 0x21, (byte) 0x70, (byte) 0x48, (byte) 0x1C, (byte) 0xD0,
+      (byte) 0x06, (byte) 0x91, (byte) 0x27, (byte) 0xD5, (byte) 0xB0, (byte) 0x5A, (byte) 0xA9,
+      (byte) 0x93, (byte) 0xB4, (byte) 0xEA, (byte) 0x98, (byte) 0x8D, (byte) 0x8F, (byte) 0xDD,
+      (byte) 0xC1, (byte) 0x86, (byte) 0xFF, (byte) 0xB7, (byte) 0xDC, (byte) 0x90, (byte) 0xA6,
+      (byte) 0xC0, (byte) 0x8F, (byte) 0x4D, (byte) 0xF4, (byte) 0x35, (byte) 0xC9, (byte) 0x34,
+      (byte) 0x06, (byte) 0x31, (byte) 0x99, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
+
+  @Override
+  byte[] G() {
+    return g;
+  }
+
+  @Override
+  byte[] P() {
+    return p;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG17.java

@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG17 extends DHGN {
+
+  static final byte[] g = {2};
+  static final byte[] p =
+      {(byte) 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+          (byte) 0xFF, (byte) 0xFF, (byte) 0xC9, (byte) 0x0F, (byte) 0xDA, (byte) 0xA2, (byte) 0x21,
+          (byte) 0x68, (byte) 0xC2, (byte) 0x34, (byte) 0xC4, (byte) 0xC6, (byte) 0x62, (byte) 0x8B,
+          (byte) 0x80, (byte) 0xDC, (byte) 0x1C, (byte) 0xD1, (byte) 0x29, (byte) 0x02, (byte) 0x4E,
+          (byte) 0x08, (byte) 0x8A, (byte) 0x67, (byte) 0xCC, (byte) 0x74, (byte) 0x02, (byte) 0x0B,
+          (byte) 0xBE, (byte) 0xA6, (byte) 0x3B, (byte) 0x13, (byte) 0x9B, (byte) 0x22, (byte) 0x51,
+          (byte) 0x4A, (byte) 0x08, (byte) 0x79, (byte) 0x8E, (byte) 0x34, (byte) 0x04, (byte) 0xDD,
+          (byte) 0xEF, (byte) 0x95, (byte) 0x19, (byte) 0xB3, (byte) 0xCD, (byte) 0x3A, (byte) 0x43,
+          (byte) 0x1B, (byte) 0x30, (byte) 0x2B, (byte) 0x0A, (byte) 0x6D, (byte) 0xF2, (byte) 0x5F,
+          (byte) 0x14, (byte) 0x37, (byte) 0x4F, (byte) 0xE1, (byte) 0x35, (byte) 0x6D, (byte) 0x6D,
+          (byte) 0x51, (byte) 0xC2, (byte) 0x45, (byte) 0xE4, (byte) 0x85, (byte) 0xB5, (byte) 0x76,
+          (byte) 0x62, (byte) 0x5E, (byte) 0x7E, (byte) 0xC6, (byte) 0xF4, (byte) 0x4C, (byte) 0x42,
+          (byte) 0xE9, (byte) 0xA6, (byte) 0x37, (byte) 0xED, (byte) 0x6B, (byte) 0x0B, (byte) 0xFF,
+          (byte) 0x5C, (byte) 0xB6, (byte) 0xF4, (byte) 0x06, (byte) 0xB7, (byte) 0xED, (byte) 0xEE,
+          (byte) 0x38, (byte) 0x6B, (byte) 0xFB, (byte) 0x5A, (byte) 0x89, (byte) 0x9F, (byte) 0xA5,
+          (byte) 0xAE, (byte) 0x9F, (byte) 0x24, (byte) 0x11, (byte) 0x7C, (byte) 0x4B, (byte) 0x1F,
+          (byte) 0xE6, (byte) 0x49, (byte) 0x28, (byte) 0x66, (byte) 0x51, (byte) 0xEC, (byte) 0xE4,
+          (byte) 0x5B, (byte) 0x3D, (byte) 0xC2, (byte) 0x00, (byte) 0x7C, (byte) 0xB8, (byte) 0xA1,
+          (byte) 0x63, (byte) 0xBF, (byte) 0x05, (byte) 0x98, (byte) 0xDA, (byte) 0x48, (byte) 0x36,
+          (byte) 0x1C, (byte) 0x55, (byte) 0xD3, (byte) 0x9A, (byte) 0x69, (byte) 0x16, (byte) 0x3F,
+          (byte) 0xA8, (byte) 0xFD, (byte) 0x24, (byte) 0xCF, (byte) 0x5F, (byte) 0x83, (byte) 0x65,
+          (byte) 0x5D, (byte) 0x23, (byte) 0xDC, (byte) 0xA3, (byte) 0xAD, (byte) 0x96, (byte) 0x1C,
+          (byte) 0x62, (byte) 0xF3, (byte) 0x56, (byte) 0x20, (byte) 0x85, (byte) 0x52, (byte) 0xBB,
+          (byte) 0x9E, (byte) 0xD5, (byte) 0x29, (byte) 0x07, (byte) 0x70, (byte) 0x96, (byte) 0x96,
+          (byte) 0x6D, (byte) 0x67, (byte) 0x0C, (byte) 0x35, (byte) 0x4E, (byte) 0x4A, (byte) 0xBC,
+          (byte) 0x98, (byte) 0x04, (byte) 0xF1, (byte) 0x74, (byte) 0x6C, (byte) 0x08, (byte) 0xCA,
+          (byte) 0x18, (byte) 0x21, (byte) 0x7C, (byte) 0x32, (byte) 0x90, (byte) 0x5E, (byte) 0x46,
+          (byte) 0x2E, (byte) 0x36, (byte) 0xCE, (byte) 0x3B, (byte) 0xE3, (byte) 0x9E, (byte) 0x77,
+          (byte) 0x2C, (byte) 0x18, (byte) 0x0E, (byte) 0x86, (byte) 0x03, (byte) 0x9B, (byte) 0x27,
+          (byte) 0x83, (byte) 0xA2, (byte) 0xEC, (byte) 0x07, (byte) 0xA2, (byte) 0x8F, (byte) 0xB5,
+          (byte) 0xC5, (byte) 0x5D, (byte) 0xF0, (byte) 0x6F, (byte) 0x4C, (byte) 0x52, (byte) 0xC9,
+          (byte) 0xDE, (byte) 0x2B, (byte) 0xCB, (byte) 0xF6, (byte) 0x95, (byte) 0x58, (byte) 0x17,
+          (byte) 0x18, (byte) 0x39, (byte) 0x95, (byte) 0x49, (byte) 0x7C, (byte) 0xEA, (byte) 0x95,
+          (byte) 0x6A, (byte) 0xE5, (byte) 0x15, (byte) 0xD2, (byte) 0x26, (byte) 0x18, (byte) 0x98,
+          (byte) 0xFA, (byte) 0x05, (byte) 0x10, (byte) 0x15, (byte) 0x72, (byte) 0x8E, (byte) 0x5A,
+          (byte) 0x8A, (byte) 0xAA, (byte) 0xC4, (byte) 0x2D, (byte) 0xAD, (byte) 0x33, (byte) 0x17,
+          (byte) 0x0D, (byte) 0x04, (byte) 0x50, (byte) 0x7A, (byte) 0x33, (byte) 0xA8, (byte) 0x55,
+          (byte) 0x21, (byte) 0xAB, (byte) 0xDF, (byte) 0x1C, (byte) 0xBA, (byte) 0x64, (byte) 0xEC,
+          (byte) 0xFB, (byte) 0x85, (byte) 0x04, (byte) 0x58, (byte) 0xDB, (byte) 0xEF, (byte) 0x0A,
+          (byte) 0x8A, (byte) 0xEA, (byte) 0x71, (byte) 0x57, (byte) 0x5D, (byte) 0x06, (byte) 0x0C,
+          (byte) 0x7D, (byte) 0xB3, (byte) 0x97, (byte) 0x0F, (byte) 0x85, (byte) 0xA6, (byte) 0xE1,
+          (byte) 0xE4, (byte) 0xC7, (byte) 0xAB, (byte) 0xF5, (byte) 0xAE, (byte) 0x8C, (byte) 0xDB,
+          (byte) 0x09, (byte) 0x33, (byte) 0xD7, (byte) 0x1E, (byte) 0x8C, (byte) 0x94, (byte) 0xE0,
+          (byte) 0x4A, (byte) 0x25, (byte) 0x61, (byte) 0x9D, (byte) 0xCE, (byte) 0xE3, (byte) 0xD2,
+          (byte) 0x26, (byte) 0x1A, (byte) 0xD2, (byte) 0xEE, (byte) 0x6B, (byte) 0xF1, (byte) 0x2F,
+          (byte) 0xFA, (byte) 0x06, (byte) 0xD9, (byte) 0x8A, (byte) 0x08, (byte) 0x64, (byte) 0xD8,
+          (byte) 0x76, (byte) 0x02, (byte) 0x73, (byte) 0x3E, (byte) 0xC8, (byte) 0x6A, (byte) 0x64,
+          (byte) 0x52, (byte) 0x1F, (byte) 0x2B, (byte) 0x18, (byte) 0x17, (byte) 0x7B, (byte) 0x20,
+          (byte) 0x0C, (byte) 0xBB, (byte) 0xE1, (byte) 0x17, (byte) 0x57, (byte) 0x7A, (byte) 0x61,
+          (byte) 0x5D, (byte) 0x6C, (byte) 0x77, (byte) 0x09, (byte) 0x88, (byte) 0xC0, (byte) 0xBA,
+          (byte) 0xD9, (byte) 0x46, (byte) 0xE2, (byte) 0x08, (byte) 0xE2, (byte) 0x4F, (byte) 0xA0,
+          (byte) 0x74, (byte) 0xE5, (byte) 0xAB, (byte) 0x31, (byte) 0x43, (byte) 0xDB, (byte) 0x5B,
+          (byte) 0xFC, (byte) 0xE0, (byte) 0xFD, (byte) 0x10, (byte) 0x8E, (byte) 0x4B, (byte) 0x82,
+          (byte) 0xD1, (byte) 0x20, (byte) 0xA9, (byte) 0x21, (byte) 0x08, (byte) 0x01, (byte) 0x1A,
+          (byte) 0x72, (byte) 0x3C, (byte) 0x12, (byte) 0xA7, (byte) 0x87, (byte) 0xE6, (byte) 0xD7,
+          (byte) 0x88, (byte) 0x71, (byte) 0x9A, (byte) 0x10, (byte) 0xBD, (byte) 0xBA, (byte) 0x5B,
+          (byte) 0x26, (byte) 0x99, (byte) 0xC3, (byte) 0x27, (byte) 0x18, (byte) 0x6A, (byte) 0xF4,
+          (byte) 0xE2, (byte) 0x3C, (byte) 0x1A, (byte) 0x94, (byte) 0x68, (byte) 0x34, (byte) 0xB6,
+          (byte) 0x15, (byte) 0x0B, (byte) 0xDA, (byte) 0x25, (byte) 0x83, (byte) 0xE9, (byte) 0xCA,
+          (byte) 0x2A, (byte) 0xD4, (byte) 0x4C, (byte) 0xE8, (byte) 0xDB, (byte) 0xBB, (byte) 0xC2,
+          (byte) 0xDB, (byte) 0x04, (byte) 0xDE, (byte) 0x8E, (byte) 0xF9, (byte) 0x2E, (byte) 0x8E,
+          (byte) 0xFC, (byte) 0x14, (byte) 0x1F, (byte) 0xBE, (byte) 0xCA, (byte) 0xA6, (byte) 0x28,
+          (byte) 0x7C, (byte) 0x59, (byte) 0x47, (byte) 0x4E, (byte) 0x6B, (byte) 0xC0, (byte) 0x5D,
+          (byte) 0x99, (byte) 0xB2, (byte) 0x96, (byte) 0x4F, (byte) 0xA0, (byte) 0x90, (byte) 0xC3,
+          (byte) 0xA2, (byte) 0x23, (byte) 0x3B, (byte) 0xA1, (byte) 0x86, (byte) 0x51, (byte) 0x5B,
+          (byte) 0xE7, (byte) 0xED, (byte) 0x1F, (byte) 0x61, (byte) 0x29, (byte) 0x70, (byte) 0xCE,
+          (byte) 0xE2, (byte) 0xD7, (byte) 0xAF, (byte) 0xB8, (byte) 0x1B, (byte) 0xDD, (byte) 0x76,
+          (byte) 0x21, (byte) 0x70, (byte) 0x48, (byte) 0x1C, (byte) 0xD0, (byte) 0x06, (byte) 0x91,
+          (byte) 0x27, (byte) 0xD5, (byte) 0xB0, (byte) 0x5A, (byte) 0xA9, (byte) 0x93, (byte) 0xB4,
+          (byte) 0xEA, (byte) 0x98, (byte) 0x8D, (byte) 0x8F, (byte) 0xDD, (byte) 0xC1, (byte) 0x86,
+          (byte) 0xFF, (byte) 0xB7, (byte) 0xDC, (byte) 0x90, (byte) 0xA6, (byte) 0xC0, (byte) 0x8F,
+          (byte) 0x4D, (byte) 0xF4, (byte) 0x35, (byte) 0xC9, (byte) 0x34, (byte) 0x02, (byte) 0x84,
+          (byte) 0x92, (byte) 0x36, (byte) 0xC3, (byte) 0xFA, (byte) 0xB4, (byte) 0xD2, (byte) 0x7C,
+          (byte) 0x70, (byte) 0x26, (byte) 0xC1, (byte) 0xD4, (byte) 0xDC, (byte) 0xB2, (byte) 0x60,
+          (byte) 0x26, (byte) 0x46, (byte) 0xDE, (byte) 0xC9, (byte) 0x75, (byte) 0x1E, (byte) 0x76,
+          (byte) 0x3D, (byte) 0xBA, (byte) 0x37, (byte) 0xBD, (byte) 0xF8, (byte) 0xFF, (byte) 0x94,
+          (byte) 0x06, (byte) 0xAD, (byte) 0x9E, (byte) 0x53, (byte) 0x0E, (byte) 0xE5, (byte) 0xDB,
+          (byte) 0x38, (byte) 0x2F, (byte) 0x41, (byte) 0x30, (byte) 0x01, (byte) 0xAE, (byte) 0xB0,
+          (byte) 0x6A, (byte) 0x53, (byte) 0xED, (byte) 0x90, (byte) 0x27, (byte) 0xD8, (byte) 0x31,
+          (byte) 0x17, (byte) 0x97, (byte) 0x27, (byte) 0xB0, (byte) 0x86, (byte) 0x5A, (byte) 0x89,
+          (byte) 0x18, (byte) 0xDA, (byte) 0x3E, (byte) 0xDB, (byte) 0xEB, (byte) 0xCF, (byte) 0x9B,
+          (byte) 0x14, (byte) 0xED, (byte) 0x44, (byte) 0xCE, (byte) 0x6C, (byte) 0xBA, (byte) 0xCE,
+          (byte) 0xD4, (byte) 0xBB, (byte) 0x1B, (byte) 0xDB, (byte) 0x7F, (byte) 0x14, (byte) 0x47,
+          (byte) 0xE6, (byte) 0xCC, (byte) 0x25, (byte) 0x4B, (byte) 0x33, (byte) 0x20, (byte) 0x51,
+          (byte) 0x51, (byte) 0x2B, (byte) 0xD7, (byte) 0xAF, (byte) 0x42, (byte) 0x6F, (byte) 0xB8,
+          (byte) 0xF4, (byte) 0x01, (byte) 0x37, (byte) 0x8C, (byte) 0xD2, (byte) 0xBF, (byte) 0x59,
+          (byte) 0x83, (byte) 0xCA, (byte) 0x01, (byte) 0xC6, (byte) 0x4B, (byte) 0x92, (byte) 0xEC,
+          (byte) 0xF0, (byte) 0x32, (byte) 0xEA, (byte) 0x15, (byte) 0xD1, (byte) 0x72, (byte) 0x1D,
+          (byte) 0x03, (byte) 0xF4, (byte) 0x82, (byte) 0xD7, (byte) 0xCE, (byte) 0x6E, (byte) 0x74,
+          (byte) 0xFE, (byte) 0xF6, (byte) 0xD5, (byte) 0x5E, (byte) 0x70, (byte) 0x2F, (byte) 0x46,
+          (byte) 0x98, (byte) 0x0C, (byte) 0x82, (byte) 0xB5, (byte) 0xA8, (byte) 0x40, (byte) 0x31,
+          (byte) 0x90, (byte) 0x0B, (byte) 0x1C, (byte) 0x9E, (byte) 0x59, (byte) 0xE7, (byte) 0xC9,
+          (byte) 0x7F, (byte) 0xBE, (byte) 0xC7, (byte) 0xE8, (byte) 0xF3, (byte) 0x23, (byte) 0xA9,
+          (byte) 0x7A, (byte) 0x7E, (byte) 0x36, (byte) 0xCC, (byte) 0x88, (byte) 0xBE, (byte) 0x0F,
+          (byte) 0x1D, (byte) 0x45, (byte) 0xB7, (byte) 0xFF, (byte) 0x58, (byte) 0x5A, (byte) 0xC5,
+          (byte) 0x4B, (byte) 0xD4, (byte) 0x07, (byte) 0xB2, (byte) 0x2B, (byte) 0x41, (byte) 0x54,
+          (byte) 0xAA, (byte) 0xCC, (byte) 0x8F, (byte) 0x6D, (byte) 0x7E, (byte) 0xBF, (byte) 0x48,
+          (byte) 0xE1, (byte) 0xD8, (byte) 0x14, (byte) 0xCC, (byte) 0x5E, (byte) 0xD2, (byte) 0x0F,
+          (byte) 0x80, (byte) 0x37, (byte) 0xE0, (byte) 0xA7, (byte) 0x97, (byte) 0x15, (byte) 0xEE,
+          (byte) 0xF2, (byte) 0x9B, (byte) 0xE3, (byte) 0x28, (byte) 0x06, (byte) 0xA1, (byte) 0xD5,
+          (byte) 0x8B, (byte) 0xB7, (byte) 0xC5, (byte) 0xDA, (byte) 0x76, (byte) 0xF5, (byte) 0x50,
+          (byte) 0xAA, (byte) 0x3D, (byte) 0x8A, (byte) 0x1F, (byte) 0xBF, (byte) 0xF0, (byte) 0xEB,
+          (byte) 0x19, (byte) 0xCC, (byte) 0xB1, (byte) 0xA3, (byte) 0x13, (byte) 0xD5, (byte) 0x5C,
+          (byte) 0xDA, (byte) 0x56, (byte) 0xC9, (byte) 0xEC, (byte) 0x2E, (byte) 0xF2, (byte) 0x96,
+          (byte) 0x32, (byte) 0x38, (byte) 0x7F, (byte) 0xE8, (byte) 0xD7, (byte) 0x6E, (byte) 0x3C,
+          (byte) 0x04, (byte) 0x68, (byte) 0x04, (byte) 0x3E, (byte) 0x8F, (byte) 0x66, (byte) 0x3F,
+          (byte) 0x48, (byte) 0x60, (byte) 0xEE, (byte) 0x12, (byte) 0xBF, (byte) 0x2D, (byte) 0x5B,
+          (byte) 0x0B, (byte) 0x74, (byte) 0x74, (byte) 0xD6, (byte) 0xE6, (byte) 0x94, (byte) 0xF9,
+          (byte) 0x1E, (byte) 0x6D, (byte) 0xCC, (byte) 0x40, (byte) 0x24, (byte) 0xFF, (byte) 0xFF,
+          (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,};
+
+  @Override
+  byte[] G() {
+    return g;
+  }
+
+  @Override
+  byte[] P() {
+    return p;
+  }
+
+  @Override
+  String sha_name() {
+    return "sha-512";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHG18.java

@@ -0,0 +1,194 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHG18 extends DHGN {
+
+  static final byte[] g = {2};
+  static final byte[] p = {(byte) 0x00, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xC9, (byte) 0x0F, (byte) 0xDA,
+      (byte) 0xA2, (byte) 0x21, (byte) 0x68, (byte) 0xC2, (byte) 0x34, (byte) 0xC4, (byte) 0xC6,
+      (byte) 0x62, (byte) 0x8B, (byte) 0x80, (byte) 0xDC, (byte) 0x1C, (byte) 0xD1, (byte) 0x29,
+      (byte) 0x02, (byte) 0x4E, (byte) 0x08, (byte) 0x8A, (byte) 0x67, (byte) 0xCC, (byte) 0x74,
+      (byte) 0x02, (byte) 0x0B, (byte) 0xBE, (byte) 0xA6, (byte) 0x3B, (byte) 0x13, (byte) 0x9B,
+      (byte) 0x22, (byte) 0x51, (byte) 0x4A, (byte) 0x08, (byte) 0x79, (byte) 0x8E, (byte) 0x34,
+      (byte) 0x04, (byte) 0xDD, (byte) 0xEF, (byte) 0x95, (byte) 0x19, (byte) 0xB3, (byte) 0xCD,
+      (byte) 0x3A, (byte) 0x43, (byte) 0x1B, (byte) 0x30, (byte) 0x2B, (byte) 0x0A, (byte) 0x6D,
+      (byte) 0xF2, (byte) 0x5F, (byte) 0x14, (byte) 0x37, (byte) 0x4F, (byte) 0xE1, (byte) 0x35,
+      (byte) 0x6D, (byte) 0x6D, (byte) 0x51, (byte) 0xC2, (byte) 0x45, (byte) 0xE4, (byte) 0x85,
+      (byte) 0xB5, (byte) 0x76, (byte) 0x62, (byte) 0x5E, (byte) 0x7E, (byte) 0xC6, (byte) 0xF4,
+      (byte) 0x4C, (byte) 0x42, (byte) 0xE9, (byte) 0xA6, (byte) 0x37, (byte) 0xED, (byte) 0x6B,
+      (byte) 0x0B, (byte) 0xFF, (byte) 0x5C, (byte) 0xB6, (byte) 0xF4, (byte) 0x06, (byte) 0xB7,
+      (byte) 0xED, (byte) 0xEE, (byte) 0x38, (byte) 0x6B, (byte) 0xFB, (byte) 0x5A, (byte) 0x89,
+      (byte) 0x9F, (byte) 0xA5, (byte) 0xAE, (byte) 0x9F, (byte) 0x24, (byte) 0x11, (byte) 0x7C,
+      (byte) 0x4B, (byte) 0x1F, (byte) 0xE6, (byte) 0x49, (byte) 0x28, (byte) 0x66, (byte) 0x51,
+      (byte) 0xEC, (byte) 0xE4, (byte) 0x5B, (byte) 0x3D, (byte) 0xC2, (byte) 0x00, (byte) 0x7C,
+      (byte) 0xB8, (byte) 0xA1, (byte) 0x63, (byte) 0xBF, (byte) 0x05, (byte) 0x98, (byte) 0xDA,
+      (byte) 0x48, (byte) 0x36, (byte) 0x1C, (byte) 0x55, (byte) 0xD3, (byte) 0x9A, (byte) 0x69,
+      (byte) 0x16, (byte) 0x3F, (byte) 0xA8, (byte) 0xFD, (byte) 0x24, (byte) 0xCF, (byte) 0x5F,
+      (byte) 0x83, (byte) 0x65, (byte) 0x5D, (byte) 0x23, (byte) 0xDC, (byte) 0xA3, (byte) 0xAD,
+      (byte) 0x96, (byte) 0x1C, (byte) 0x62, (byte) 0xF3, (byte) 0x56, (byte) 0x20, (byte) 0x85,
+      (byte) 0x52, (byte) 0xBB, (byte) 0x9E, (byte) 0xD5, (byte) 0x29, (byte) 0x07, (byte) 0x70,
+      (byte) 0x96, (byte) 0x96, (byte) 0x6D, (byte) 0x67, (byte) 0x0C, (byte) 0x35, (byte) 0x4E,
+      (byte) 0x4A, (byte) 0xBC, (byte) 0x98, (byte) 0x04, (byte) 0xF1, (byte) 0x74, (byte) 0x6C,
+      (byte) 0x08, (byte) 0xCA, (byte) 0x18, (byte) 0x21, (byte) 0x7C, (byte) 0x32, (byte) 0x90,
+      (byte) 0x5E, (byte) 0x46, (byte) 0x2E, (byte) 0x36, (byte) 0xCE, (byte) 0x3B, (byte) 0xE3,
+      (byte) 0x9E, (byte) 0x77, (byte) 0x2C, (byte) 0x18, (byte) 0x0E, (byte) 0x86, (byte) 0x03,
+      (byte) 0x9B, (byte) 0x27, (byte) 0x83, (byte) 0xA2, (byte) 0xEC, (byte) 0x07, (byte) 0xA2,
+      (byte) 0x8F, (byte) 0xB5, (byte) 0xC5, (byte) 0x5D, (byte) 0xF0, (byte) 0x6F, (byte) 0x4C,
+      (byte) 0x52, (byte) 0xC9, (byte) 0xDE, (byte) 0x2B, (byte) 0xCB, (byte) 0xF6, (byte) 0x95,
+      (byte) 0x58, (byte) 0x17, (byte) 0x18, (byte) 0x39, (byte) 0x95, (byte) 0x49, (byte) 0x7C,
+      (byte) 0xEA, (byte) 0x95, (byte) 0x6A, (byte) 0xE5, (byte) 0x15, (byte) 0xD2, (byte) 0x26,
+      (byte) 0x18, (byte) 0x98, (byte) 0xFA, (byte) 0x05, (byte) 0x10, (byte) 0x15, (byte) 0x72,
+      (byte) 0x8E, (byte) 0x5A, (byte) 0x8A, (byte) 0xAA, (byte) 0xC4, (byte) 0x2D, (byte) 0xAD,
+      (byte) 0x33, (byte) 0x17, (byte) 0x0D, (byte) 0x04, (byte) 0x50, (byte) 0x7A, (byte) 0x33,
+      (byte) 0xA8, (byte) 0x55, (byte) 0x21, (byte) 0xAB, (byte) 0xDF, (byte) 0x1C, (byte) 0xBA,
+      (byte) 0x64, (byte) 0xEC, (byte) 0xFB, (byte) 0x85, (byte) 0x04, (byte) 0x58, (byte) 0xDB,
+      (byte) 0xEF, (byte) 0x0A, (byte) 0x8A, (byte) 0xEA, (byte) 0x71, (byte) 0x57, (byte) 0x5D,
+      (byte) 0x06, (byte) 0x0C, (byte) 0x7D, (byte) 0xB3, (byte) 0x97, (byte) 0x0F, (byte) 0x85,
+      (byte) 0xA6, (byte) 0xE1, (byte) 0xE4, (byte) 0xC7, (byte) 0xAB, (byte) 0xF5, (byte) 0xAE,
+      (byte) 0x8C, (byte) 0xDB, (byte) 0x09, (byte) 0x33, (byte) 0xD7, (byte) 0x1E, (byte) 0x8C,
+      (byte) 0x94, (byte) 0xE0, (byte) 0x4A, (byte) 0x25, (byte) 0x61, (byte) 0x9D, (byte) 0xCE,
+      (byte) 0xE3, (byte) 0xD2, (byte) 0x26, (byte) 0x1A, (byte) 0xD2, (byte) 0xEE, (byte) 0x6B,
+      (byte) 0xF1, (byte) 0x2F, (byte) 0xFA, (byte) 0x06, (byte) 0xD9, (byte) 0x8A, (byte) 0x08,
+      (byte) 0x64, (byte) 0xD8, (byte) 0x76, (byte) 0x02, (byte) 0x73, (byte) 0x3E, (byte) 0xC8,
+      (byte) 0x6A, (byte) 0x64, (byte) 0x52, (byte) 0x1F, (byte) 0x2B, (byte) 0x18, (byte) 0x17,
+      (byte) 0x7B, (byte) 0x20, (byte) 0x0C, (byte) 0xBB, (byte) 0xE1, (byte) 0x17, (byte) 0x57,
+      (byte) 0x7A, (byte) 0x61, (byte) 0x5D, (byte) 0x6C, (byte) 0x77, (byte) 0x09, (byte) 0x88,
+      (byte) 0xC0, (byte) 0xBA, (byte) 0xD9, (byte) 0x46, (byte) 0xE2, (byte) 0x08, (byte) 0xE2,
+      (byte) 0x4F, (byte) 0xA0, (byte) 0x74, (byte) 0xE5, (byte) 0xAB, (byte) 0x31, (byte) 0x43,
+      (byte) 0xDB, (byte) 0x5B, (byte) 0xFC, (byte) 0xE0, (byte) 0xFD, (byte) 0x10, (byte) 0x8E,
+      (byte) 0x4B, (byte) 0x82, (byte) 0xD1, (byte) 0x20, (byte) 0xA9, (byte) 0x21, (byte) 0x08,
+      (byte) 0x01, (byte) 0x1A, (byte) 0x72, (byte) 0x3C, (byte) 0x12, (byte) 0xA7, (byte) 0x87,
+      (byte) 0xE6, (byte) 0xD7, (byte) 0x88, (byte) 0x71, (byte) 0x9A, (byte) 0x10, (byte) 0xBD,
+      (byte) 0xBA, (byte) 0x5B, (byte) 0x26, (byte) 0x99, (byte) 0xC3, (byte) 0x27, (byte) 0x18,
+      (byte) 0x6A, (byte) 0xF4, (byte) 0xE2, (byte) 0x3C, (byte) 0x1A, (byte) 0x94, (byte) 0x68,
+      (byte) 0x34, (byte) 0xB6, (byte) 0x15, (byte) 0x0B, (byte) 0xDA, (byte) 0x25, (byte) 0x83,
+      (byte) 0xE9, (byte) 0xCA, (byte) 0x2A, (byte) 0xD4, (byte) 0x4C, (byte) 0xE8, (byte) 0xDB,
+      (byte) 0xBB, (byte) 0xC2, (byte) 0xDB, (byte) 0x04, (byte) 0xDE, (byte) 0x8E, (byte) 0xF9,
+      (byte) 0x2E, (byte) 0x8E, (byte) 0xFC, (byte) 0x14, (byte) 0x1F, (byte) 0xBE, (byte) 0xCA,
+      (byte) 0xA6, (byte) 0x28, (byte) 0x7C, (byte) 0x59, (byte) 0x47, (byte) 0x4E, (byte) 0x6B,
+      (byte) 0xC0, (byte) 0x5D, (byte) 0x99, (byte) 0xB2, (byte) 0x96, (byte) 0x4F, (byte) 0xA0,
+      (byte) 0x90, (byte) 0xC3, (byte) 0xA2, (byte) 0x23, (byte) 0x3B, (byte) 0xA1, (byte) 0x86,
+      (byte) 0x51, (byte) 0x5B, (byte) 0xE7, (byte) 0xED, (byte) 0x1F, (byte) 0x61, (byte) 0x29,
+      (byte) 0x70, (byte) 0xCE, (byte) 0xE2, (byte) 0xD7, (byte) 0xAF, (byte) 0xB8, (byte) 0x1B,
+      (byte) 0xDD, (byte) 0x76, (byte) 0x21, (byte) 0x70, (byte) 0x48, (byte) 0x1C, (byte) 0xD0,
+      (byte) 0x06, (byte) 0x91, (byte) 0x27, (byte) 0xD5, (byte) 0xB0, (byte) 0x5A, (byte) 0xA9,
+      (byte) 0x93, (byte) 0xB4, (byte) 0xEA, (byte) 0x98, (byte) 0x8D, (byte) 0x8F, (byte) 0xDD,
+      (byte) 0xC1, (byte) 0x86, (byte) 0xFF, (byte) 0xB7, (byte) 0xDC, (byte) 0x90, (byte) 0xA6,
+      (byte) 0xC0, (byte) 0x8F, (byte) 0x4D, (byte) 0xF4, (byte) 0x35, (byte) 0xC9, (byte) 0x34,
+      (byte) 0x02, (byte) 0x84, (byte) 0x92, (byte) 0x36, (byte) 0xC3, (byte) 0xFA, (byte) 0xB4,
+      (byte) 0xD2, (byte) 0x7C, (byte) 0x70, (byte) 0x26, (byte) 0xC1, (byte) 0xD4, (byte) 0xDC,
+      (byte) 0xB2, (byte) 0x60, (byte) 0x26, (byte) 0x46, (byte) 0xDE, (byte) 0xC9, (byte) 0x75,
+      (byte) 0x1E, (byte) 0x76, (byte) 0x3D, (byte) 0xBA, (byte) 0x37, (byte) 0xBD, (byte) 0xF8,
+      (byte) 0xFF, (byte) 0x94, (byte) 0x06, (byte) 0xAD, (byte) 0x9E, (byte) 0x53, (byte) 0x0E,
+      (byte) 0xE5, (byte) 0xDB, (byte) 0x38, (byte) 0x2F, (byte) 0x41, (byte) 0x30, (byte) 0x01,
+      (byte) 0xAE, (byte) 0xB0, (byte) 0x6A, (byte) 0x53, (byte) 0xED, (byte) 0x90, (byte) 0x27,
+      (byte) 0xD8, (byte) 0x31, (byte) 0x17, (byte) 0x97, (byte) 0x27, (byte) 0xB0, (byte) 0x86,
+      (byte) 0x5A, (byte) 0x89, (byte) 0x18, (byte) 0xDA, (byte) 0x3E, (byte) 0xDB, (byte) 0xEB,
+      (byte) 0xCF, (byte) 0x9B, (byte) 0x14, (byte) 0xED, (byte) 0x44, (byte) 0xCE, (byte) 0x6C,
+      (byte) 0xBA, (byte) 0xCE, (byte) 0xD4, (byte) 0xBB, (byte) 0x1B, (byte) 0xDB, (byte) 0x7F,
+      (byte) 0x14, (byte) 0x47, (byte) 0xE6, (byte) 0xCC, (byte) 0x25, (byte) 0x4B, (byte) 0x33,
+      (byte) 0x20, (byte) 0x51, (byte) 0x51, (byte) 0x2B, (byte) 0xD7, (byte) 0xAF, (byte) 0x42,
+      (byte) 0x6F, (byte) 0xB8, (byte) 0xF4, (byte) 0x01, (byte) 0x37, (byte) 0x8C, (byte) 0xD2,
+      (byte) 0xBF, (byte) 0x59, (byte) 0x83, (byte) 0xCA, (byte) 0x01, (byte) 0xC6, (byte) 0x4B,
+      (byte) 0x92, (byte) 0xEC, (byte) 0xF0, (byte) 0x32, (byte) 0xEA, (byte) 0x15, (byte) 0xD1,
+      (byte) 0x72, (byte) 0x1D, (byte) 0x03, (byte) 0xF4, (byte) 0x82, (byte) 0xD7, (byte) 0xCE,
+      (byte) 0x6E, (byte) 0x74, (byte) 0xFE, (byte) 0xF6, (byte) 0xD5, (byte) 0x5E, (byte) 0x70,
+      (byte) 0x2F, (byte) 0x46, (byte) 0x98, (byte) 0x0C, (byte) 0x82, (byte) 0xB5, (byte) 0xA8,
+      (byte) 0x40, (byte) 0x31, (byte) 0x90, (byte) 0x0B, (byte) 0x1C, (byte) 0x9E, (byte) 0x59,
+      (byte) 0xE7, (byte) 0xC9, (byte) 0x7F, (byte) 0xBE, (byte) 0xC7, (byte) 0xE8, (byte) 0xF3,
+      (byte) 0x23, (byte) 0xA9, (byte) 0x7A, (byte) 0x7E, (byte) 0x36, (byte) 0xCC, (byte) 0x88,
+      (byte) 0xBE, (byte) 0x0F, (byte) 0x1D, (byte) 0x45, (byte) 0xB7, (byte) 0xFF, (byte) 0x58,
+      (byte) 0x5A, (byte) 0xC5, (byte) 0x4B, (byte) 0xD4, (byte) 0x07, (byte) 0xB2, (byte) 0x2B,
+      (byte) 0x41, (byte) 0x54, (byte) 0xAA, (byte) 0xCC, (byte) 0x8F, (byte) 0x6D, (byte) 0x7E,
+      (byte) 0xBF, (byte) 0x48, (byte) 0xE1, (byte) 0xD8, (byte) 0x14, (byte) 0xCC, (byte) 0x5E,
+      (byte) 0xD2, (byte) 0x0F, (byte) 0x80, (byte) 0x37, (byte) 0xE0, (byte) 0xA7, (byte) 0x97,
+      (byte) 0x15, (byte) 0xEE, (byte) 0xF2, (byte) 0x9B, (byte) 0xE3, (byte) 0x28, (byte) 0x06,
+      (byte) 0xA1, (byte) 0xD5, (byte) 0x8B, (byte) 0xB7, (byte) 0xC5, (byte) 0xDA, (byte) 0x76,
+      (byte) 0xF5, (byte) 0x50, (byte) 0xAA, (byte) 0x3D, (byte) 0x8A, (byte) 0x1F, (byte) 0xBF,
+      (byte) 0xF0, (byte) 0xEB, (byte) 0x19, (byte) 0xCC, (byte) 0xB1, (byte) 0xA3, (byte) 0x13,
+      (byte) 0xD5, (byte) 0x5C, (byte) 0xDA, (byte) 0x56, (byte) 0xC9, (byte) 0xEC, (byte) 0x2E,
+      (byte) 0xF2, (byte) 0x96, (byte) 0x32, (byte) 0x38, (byte) 0x7F, (byte) 0xE8, (byte) 0xD7,
+      (byte) 0x6E, (byte) 0x3C, (byte) 0x04, (byte) 0x68, (byte) 0x04, (byte) 0x3E, (byte) 0x8F,
+      (byte) 0x66, (byte) 0x3F, (byte) 0x48, (byte) 0x60, (byte) 0xEE, (byte) 0x12, (byte) 0xBF,
+      (byte) 0x2D, (byte) 0x5B, (byte) 0x0B, (byte) 0x74, (byte) 0x74, (byte) 0xD6, (byte) 0xE6,
+      (byte) 0x94, (byte) 0xF9, (byte) 0x1E, (byte) 0x6D, (byte) 0xBE, (byte) 0x11, (byte) 0x59,
+      (byte) 0x74, (byte) 0xA3, (byte) 0x92, (byte) 0x6F, (byte) 0x12, (byte) 0xFE, (byte) 0xE5,
+      (byte) 0xE4, (byte) 0x38, (byte) 0x77, (byte) 0x7C, (byte) 0xB6, (byte) 0xA9, (byte) 0x32,
+      (byte) 0xDF, (byte) 0x8C, (byte) 0xD8, (byte) 0xBE, (byte) 0xC4, (byte) 0xD0, (byte) 0x73,
+      (byte) 0xB9, (byte) 0x31, (byte) 0xBA, (byte) 0x3B, (byte) 0xC8, (byte) 0x32, (byte) 0xB6,
+      (byte) 0x8D, (byte) 0x9D, (byte) 0xD3, (byte) 0x00, (byte) 0x74, (byte) 0x1F, (byte) 0xA7,
+      (byte) 0xBF, (byte) 0x8A, (byte) 0xFC, (byte) 0x47, (byte) 0xED, (byte) 0x25, (byte) 0x76,
+      (byte) 0xF6, (byte) 0x93, (byte) 0x6B, (byte) 0xA4, (byte) 0x24, (byte) 0x66, (byte) 0x3A,
+      (byte) 0xAB, (byte) 0x63, (byte) 0x9C, (byte) 0x5A, (byte) 0xE4, (byte) 0xF5, (byte) 0x68,
+      (byte) 0x34, (byte) 0x23, (byte) 0xB4, (byte) 0x74, (byte) 0x2B, (byte) 0xF1, (byte) 0xC9,
+      (byte) 0x78, (byte) 0x23, (byte) 0x8F, (byte) 0x16, (byte) 0xCB, (byte) 0xE3, (byte) 0x9D,
+      (byte) 0x65, (byte) 0x2D, (byte) 0xE3, (byte) 0xFD, (byte) 0xB8, (byte) 0xBE, (byte) 0xFC,
+      (byte) 0x84, (byte) 0x8A, (byte) 0xD9, (byte) 0x22, (byte) 0x22, (byte) 0x2E, (byte) 0x04,
+      (byte) 0xA4, (byte) 0x03, (byte) 0x7C, (byte) 0x07, (byte) 0x13, (byte) 0xEB, (byte) 0x57,
+      (byte) 0xA8, (byte) 0x1A, (byte) 0x23, (byte) 0xF0, (byte) 0xC7, (byte) 0x34, (byte) 0x73,
+      (byte) 0xFC, (byte) 0x64, (byte) 0x6C, (byte) 0xEA, (byte) 0x30, (byte) 0x6B, (byte) 0x4B,
+      (byte) 0xCB, (byte) 0xC8, (byte) 0x86, (byte) 0x2F, (byte) 0x83, (byte) 0x85, (byte) 0xDD,
+      (byte) 0xFA, (byte) 0x9D, (byte) 0x4B, (byte) 0x7F, (byte) 0xA2, (byte) 0xC0, (byte) 0x87,
+      (byte) 0xE8, (byte) 0x79, (byte) 0x68, (byte) 0x33, (byte) 0x03, (byte) 0xED, (byte) 0x5B,
+      (byte) 0xDD, (byte) 0x3A, (byte) 0x06, (byte) 0x2B, (byte) 0x3C, (byte) 0xF5, (byte) 0xB3,
+      (byte) 0xA2, (byte) 0x78, (byte) 0xA6, (byte) 0x6D, (byte) 0x2A, (byte) 0x13, (byte) 0xF8,
+      (byte) 0x3F, (byte) 0x44, (byte) 0xF8, (byte) 0x2D, (byte) 0xDF, (byte) 0x31, (byte) 0x0E,
+      (byte) 0xE0, (byte) 0x74, (byte) 0xAB, (byte) 0x6A, (byte) 0x36, (byte) 0x45, (byte) 0x97,
+      (byte) 0xE8, (byte) 0x99, (byte) 0xA0, (byte) 0x25, (byte) 0x5D, (byte) 0xC1, (byte) 0x64,
+      (byte) 0xF3, (byte) 0x1C, (byte) 0xC5, (byte) 0x08, (byte) 0x46, (byte) 0x85, (byte) 0x1D,
+      (byte) 0xF9, (byte) 0xAB, (byte) 0x48, (byte) 0x19, (byte) 0x5D, (byte) 0xED, (byte) 0x7E,
+      (byte) 0xA1, (byte) 0xB1, (byte) 0xD5, (byte) 0x10, (byte) 0xBD, (byte) 0x7E, (byte) 0xE7,
+      (byte) 0x4D, (byte) 0x73, (byte) 0xFA, (byte) 0xF3, (byte) 0x6B, (byte) 0xC3, (byte) 0x1E,
+      (byte) 0xCF, (byte) 0xA2, (byte) 0x68, (byte) 0x35, (byte) 0x90, (byte) 0x46, (byte) 0xF4,
+      (byte) 0xEB, (byte) 0x87, (byte) 0x9F, (byte) 0x92, (byte) 0x40, (byte) 0x09, (byte) 0x43,
+      (byte) 0x8B, (byte) 0x48, (byte) 0x1C, (byte) 0x6C, (byte) 0xD7, (byte) 0x88, (byte) 0x9A,
+      (byte) 0x00, (byte) 0x2E, (byte) 0xD5, (byte) 0xEE, (byte) 0x38, (byte) 0x2B, (byte) 0xC9,
+      (byte) 0x19, (byte) 0x0D, (byte) 0xA6, (byte) 0xFC, (byte) 0x02, (byte) 0x6E, (byte) 0x47,
+      (byte) 0x95, (byte) 0x58, (byte) 0xE4, (byte) 0x47, (byte) 0x56, (byte) 0x77, (byte) 0xE9,
+      (byte) 0xAA, (byte) 0x9E, (byte) 0x30, (byte) 0x50, (byte) 0xE2, (byte) 0x76, (byte) 0x56,
+      (byte) 0x94, (byte) 0xDF, (byte) 0xC8, (byte) 0x1F, (byte) 0x56, (byte) 0xE8, (byte) 0x80,
+      (byte) 0xB9, (byte) 0x6E, (byte) 0x71, (byte) 0x60, (byte) 0xC9, (byte) 0x80, (byte) 0xDD,
+      (byte) 0x98, (byte) 0xED, (byte) 0xD3, (byte) 0xDF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
+      (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
+
+  @Override
+  byte[] G() {
+    return g;
+  }
+
+  @Override
+  byte[] P() {
+    return p;
+  }
+
+  @Override
+  String sha_name() {
+    return "sha-512";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHGEX.java

@@ -0,0 +1,246 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.math.BigInteger;
+
+abstract class DHGEX extends KeyExchange {
+
+  private static final int SSH_MSG_KEX_DH_GEX_GROUP = 31;
+  private static final int SSH_MSG_KEX_DH_GEX_INIT = 32;
+  private static final int SSH_MSG_KEX_DH_GEX_REPLY = 33;
+  private static final int SSH_MSG_KEX_DH_GEX_REQUEST = 34;
+
+  int min;
+  int preferred;
+  int max;
+
+  private int state;
+
+  DH dh;
+
+  byte[] V_S;
+  byte[] V_C;
+  byte[] I_S;
+  byte[] I_C;
+
+  private Buffer buf;
+  private Packet packet;
+
+  private byte[] p;
+  private byte[] g;
+  private byte[] e;
+
+  protected String hash;
+
+  @Override
+  public void init(Session session, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
+      throws Exception {
+    this.V_S = V_S;
+    this.V_C = V_C;
+    this.I_S = I_S;
+    this.I_C = I_C;
+
+    try {
+      Class<? extends HASH> c = Class.forName(session.getConfig(hash)).asSubclass(HASH.class);
+      sha = c.getDeclaredConstructor().newInstance();
+      sha.init();
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    buf = new Buffer();
+    packet = new Packet(buf);
+
+    try {
+      Class<? extends DH> c = Class.forName(session.getConfig("dh")).asSubclass(DH.class);
+      min = Integer.parseInt(session.getConfig("dhgex_min"));
+      max = Integer.parseInt(session.getConfig("dhgex_max"));
+      preferred = Integer.parseInt(session.getConfig("dhgex_preferred"));
+      if (min <= 0 || max <= 0 || preferred <= 0 || preferred < min || preferred > max) {
+        throw new JSchException(
+            "Invalid DHGEX sizes: min=" + min + " max=" + max + " preferred=" + preferred);
+      }
+      dh = c.getDeclaredConstructor().newInstance();
+      dh.init();
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    packet.reset();
+    buf.putByte((byte) SSH_MSG_KEX_DH_GEX_REQUEST);
+    buf.putInt(min);
+    buf.putInt(preferred);
+    buf.putInt(max);
+    session.write(packet);
+
+    if (session.getLogger().isEnabled(Logger.INFO)) {
+      session.getLogger().log(Logger.INFO,
+          "SSH_MSG_KEX_DH_GEX_REQUEST(" + min + "<" + preferred + "<" + max + ") sent");
+      session.getLogger().log(Logger.INFO, "expecting SSH_MSG_KEX_DH_GEX_GROUP");
+    }
+
+    state = SSH_MSG_KEX_DH_GEX_GROUP;
+  }
+
+  @Override
+  public boolean next(Buffer _buf) throws Exception {
+    int i, j;
+    switch (state) {
+      case SSH_MSG_KEX_DH_GEX_GROUP:
+        // byte SSH_MSG_KEX_DH_GEX_GROUP(31)
+        // mpint p, safe prime
+        // mpint g, generator for subgroup in GF (p)
+        _buf.getInt();
+        _buf.getByte();
+        j = _buf.getByte();
+        if (j != SSH_MSG_KEX_DH_GEX_GROUP) {
+          if (session.getLogger().isEnabled(Logger.ERROR)) {
+            session.getLogger().log(Logger.ERROR, "type: must be SSH_MSG_KEX_DH_GEX_GROUP " + j);
+          }
+          return false;
+        }
+
+        p = _buf.getMPInt();
+        g = _buf.getMPInt();
+
+        int bits = new BigInteger(1, p).bitLength();
+        if (bits < min || bits > max) {
+          return false;
+        }
+
+        dh.setP(p);
+        dh.setG(g);
+        // The client responds with:
+        // byte SSH_MSG_KEX_DH_GEX_INIT(32)
+        // mpint e <- g^x mod p
+        // x is a random number (1 < x < (p-1)/2)
+
+        e = dh.getE();
+
+        packet.reset();
+        buf.putByte((byte) SSH_MSG_KEX_DH_GEX_INIT);
+        buf.putMPInt(e);
+        session.write(packet);
+
+        if (session.getLogger().isEnabled(Logger.INFO)) {
+          session.getLogger().log(Logger.INFO, "SSH_MSG_KEX_DH_GEX_INIT sent");
+          session.getLogger().log(Logger.INFO, "expecting SSH_MSG_KEX_DH_GEX_REPLY");
+        }
+
+        state = SSH_MSG_KEX_DH_GEX_REPLY;
+        return true;
+      // break;
+
+      case SSH_MSG_KEX_DH_GEX_REPLY:
+        // The server responds with:
+        // byte SSH_MSG_KEX_DH_GEX_REPLY(33)
+        // string server public host key and certificates (K_S)
+        // mpint f
+        // string signature of H
+        j = _buf.getInt();
+        j = _buf.getByte();
+        j = _buf.getByte();
+        if (j != SSH_MSG_KEX_DH_GEX_REPLY) {
+          if (session.getLogger().isEnabled(Logger.ERROR)) {
+            session.getLogger().log(Logger.ERROR, "type: must be SSH_MSG_KEX_DH_GEX_REPLY " + j);
+          }
+          return false;
+        }
+
+        K_S = _buf.getString();
+
+        byte[] f = _buf.getMPInt();
+        byte[] sig_of_H = _buf.getString();
+
+        dh.setF(f);
+
+        dh.checkRange();
+
+        K = encodeAsMPInt(normalize(dh.getK()));
+
+        // The hash H is computed as the HASH hash of the concatenation of the
+        // following:
+        // string V_C, the client's version string (CR and NL excluded)
+        // string V_S, the server's version string (CR and NL excluded)
+        // string I_C, the payload of the client's SSH_MSG_KEXINIT
+        // string I_S, the payload of the server's SSH_MSG_KEXINIT
+        // string K_S, the host key
+        // uint32 min, minimal size in bits of an acceptable group
+        // uint32 n, preferred size in bits of the group the server should send
+        // uint32 max, maximal size in bits of an acceptable group
+        // mpint p, safe prime
+        // mpint g, generator for subgroup
+        // mpint e, exchange value sent by the client
+        // mpint f, exchange value sent by the server
+        // mpint K, the shared secret
+        // This value is called the exchange hash, and it is used to authenti-
+        // cate the key exchange.
+
+        buf.reset();
+        buf.putString(V_C);
+        buf.putString(V_S);
+        buf.putString(I_C);
+        buf.putString(I_S);
+        buf.putString(K_S);
+        buf.putInt(min);
+        buf.putInt(preferred);
+        buf.putInt(max);
+        buf.putMPInt(p);
+        buf.putMPInt(g);
+        buf.putMPInt(e);
+        buf.putMPInt(f);
+
+        byte[] foo = new byte[buf.getLength()];
+        buf.getByte(foo);
+        sha.update(foo, 0, foo.length);
+        sha.update(K, 0, K.length);
+
+        H = sha.digest();
+
+        // System.err.print("H -> "); dump(H, 0, H.length);
+
+        i = 0;
+        j = 0;
+        j = ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000)
+            | ((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
+        String alg = Util.byte2str(K_S, i, j);
+        i += j;
+
+        boolean result = verify(alg, K_S, i, sig_of_H);
+
+        state = STATE_END;
+        return result;
+    }
+    return false;
+  }
+
+  @Override
+  public int getState() {
+    return state;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHGEX1.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHGEX1 extends DHGEX {
+  DHGEX1() {
+    hash = "sha-1";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHGEX224.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHGEX224 extends DHGEX {
+  DHGEX224() {
+    hash = "sha-224";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHGEX256.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHGEX256 extends DHGEX {
+  DHGEX256() {
+    hash = "sha-256";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHGEX384.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHGEX384 extends DHGEX {
+  DHGEX384() {
+    hash = "sha-384";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHGEX512.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class DHGEX512 extends DHGEX {
+  DHGEX512() {
+    hash = "sha-512";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHGN.java

@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+abstract class DHGN extends KeyExchange {
+
+  private static final int SSH_MSG_KEXDH_INIT = 30;
+  private static final int SSH_MSG_KEXDH_REPLY = 31;
+
+  private int state;
+
+  DH dh;
+
+  byte[] V_S;
+  byte[] V_C;
+  byte[] I_S;
+  byte[] I_C;
+
+  byte[] e;
+
+  private Buffer buf;
+  private Packet packet;
+
+  abstract byte[] G();
+
+  abstract byte[] P();
+
+  abstract String sha_name();
+
+  @Override
+  public void init(Session session, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
+      throws Exception {
+    this.V_S = V_S;
+    this.V_C = V_C;
+    this.I_S = I_S;
+    this.I_C = I_C;
+
+    try {
+      Class<? extends HASH> c = Class.forName(session.getConfig(sha_name())).asSubclass(HASH.class);
+      sha = c.getDeclaredConstructor().newInstance();
+      sha.init();
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    buf = new Buffer();
+    packet = new Packet(buf);
+
+    try {
+      Class<? extends DH> c = Class.forName(session.getConfig("dh")).asSubclass(DH.class);
+      dh = c.getDeclaredConstructor().newInstance();
+      dh.init();
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    dh.setP(P());
+    dh.setG(G());
+    // The client responds with:
+    // byte SSH_MSG_KEXDH_INIT(30)
+    // mpint e <- g^x mod p
+    // x is a random number (1 < x < (p-1)/2)
+
+    e = dh.getE();
+    packet.reset();
+    buf.putByte((byte) SSH_MSG_KEXDH_INIT);
+    buf.putMPInt(e);
+
+    if (V_S == null) { // This is a really ugly hack for Session.checkKexes ;-(
+      return;
+    }
+
+    session.write(packet);
+
+    if (session.getLogger().isEnabled(Logger.INFO)) {
+      session.getLogger().log(Logger.INFO, "SSH_MSG_KEXDH_INIT sent");
+      session.getLogger().log(Logger.INFO, "expecting SSH_MSG_KEXDH_REPLY");
+    }
+
+    state = SSH_MSG_KEXDH_REPLY;
+  }
+
+  @Override
+  public boolean next(Buffer _buf) throws Exception {
+    int i, j;
+
+    switch (state) {
+      case SSH_MSG_KEXDH_REPLY:
+        // The server responds with:
+        // byte SSH_MSG_KEXDH_REPLY(31)
+        // string server public host key and certificates (K_S)
+        // mpint f
+        // string signature of H
+        j = _buf.getInt();
+        j = _buf.getByte();
+        j = _buf.getByte();
+        if (j != SSH_MSG_KEXDH_REPLY) {
+          if (session.getLogger().isEnabled(Logger.ERROR)) {
+            session.getLogger().log(Logger.ERROR, "type: must be SSH_MSG_KEXDH_REPLY " + j);
+          }
+          return false;
+        }
+
+        K_S = _buf.getString();
+
+        byte[] f = _buf.getMPInt();
+        byte[] sig_of_H = _buf.getString();
+
+        dh.setF(f);
+
+        dh.checkRange();
+
+        K = encodeAsMPInt(normalize(dh.getK()));
+
+        // The hash H is computed as the HASH hash of the concatenation of the
+        // following:
+        // string V_C, the client's version string (CR and NL excluded)
+        // string V_S, the server's version string (CR and NL excluded)
+        // string I_C, the payload of the client's SSH_MSG_KEXINIT
+        // string I_S, the payload of the server's SSH_MSG_KEXINIT
+        // string K_S, the host key
+        // mpint e, exchange value sent by the client
+        // mpint f, exchange value sent by the server
+        // mpint K, the shared secret
+        // This value is called the exchange hash, and it is used to authenti-
+        // cate the key exchange.
+        buf.reset();
+        buf.putString(V_C);
+        buf.putString(V_S);
+        buf.putString(I_C);
+        buf.putString(I_S);
+        buf.putString(K_S);
+        buf.putMPInt(e);
+        buf.putMPInt(f);
+        byte[] foo = new byte[buf.getLength()];
+        buf.getByte(foo);
+
+        sha.update(foo, 0, foo.length);
+        sha.update(K, 0, K.length);
+        H = sha.digest();
+        // System.err.print("H -> "); //dump(H, 0, H.length);
+
+        i = 0;
+        j = 0;
+        j = ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000)
+            | ((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
+        String alg = Util.byte2str(K_S, i, j);
+        i += j;
+
+        boolean result = verify(alg, K_S, i, sig_of_H);
+
+        state = STATE_END;
+        return result;
+    }
+    return false;
+  }
+
+  @Override
+  public int getState() {
+    return state;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHXEC.java

@@ -0,0 +1,199 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+abstract class DHXEC extends KeyExchange {
+
+  private static final int SSH_MSG_KEX_ECDH_INIT = 30;
+  private static final int SSH_MSG_KEX_ECDH_REPLY = 31;
+  private int state;
+
+  byte[] Q_C;
+
+  byte[] V_S;
+  byte[] V_C;
+  byte[] I_S;
+  byte[] I_C;
+
+  byte[] e;
+
+  private Buffer buf;
+  private Packet packet;
+
+  private XDH xdh;
+
+  protected String sha_name;
+  protected String curve_name;
+  protected int key_len;
+
+  @Override
+  public void init(Session session, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
+      throws Exception {
+    this.V_S = V_S;
+    this.V_C = V_C;
+    this.I_S = I_S;
+    this.I_C = I_C;
+
+    try {
+      Class<? extends HASH> c = Class.forName(session.getConfig(sha_name)).asSubclass(HASH.class);
+      sha = c.getDeclaredConstructor().newInstance();
+      sha.init();
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    buf = new Buffer();
+    packet = new Packet(buf);
+
+    packet.reset();
+    buf.putByte((byte) SSH_MSG_KEX_ECDH_INIT);
+
+    try {
+      Class<? extends XDH> c = Class.forName(session.getConfig("xdh")).asSubclass(XDH.class);
+      xdh = c.getDeclaredConstructor().newInstance();
+      xdh.init(curve_name, key_len);
+
+      Q_C = xdh.getQ();
+      buf.putString(Q_C);
+    } catch (Exception | NoClassDefFoundError e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    if (V_S == null) { // This is a really ugly hack for Session.checkKexes ;-(
+      return;
+    }
+
+    session.write(packet);
+
+    if (session.getLogger().isEnabled(Logger.INFO)) {
+      session.getLogger().log(Logger.INFO, "SSH_MSG_KEX_ECDH_INIT sent");
+      session.getLogger().log(Logger.INFO, "expecting SSH_MSG_KEX_ECDH_REPLY");
+    }
+
+    state = SSH_MSG_KEX_ECDH_REPLY;
+  }
+
+  @Override
+  public boolean next(Buffer _buf) throws Exception {
+    int i, j;
+    switch (state) {
+      case SSH_MSG_KEX_ECDH_REPLY:
+        // The server responds with:
+        // byte SSH_MSG_KEX_ECDH_REPLY
+        // string K_S, server's public host key
+        // string Q_S, server's ephemeral public key octet string
+        // string the signature on the exchange hash
+        j = _buf.getInt();
+        j = _buf.getByte();
+        j = _buf.getByte();
+        if (j != SSH_MSG_KEX_ECDH_REPLY) {
+          if (session.getLogger().isEnabled(Logger.ERROR)) {
+            session.getLogger().log(Logger.ERROR, "type: must be SSH_MSG_KEX_ECDH_REPLY " + j);
+          }
+          return false;
+        }
+
+        K_S = _buf.getString();
+
+        byte[] Q_S = _buf.getString();
+
+        // RFC 5656,
+        // 4. ECDH Key Exchange
+        // All elliptic curve public keys MUST be validated after they are
+        // received. An example of a validation algorithm can be found in
+        // Section 3.2.2 of [SEC1]. If a key fails validation,
+        // the key exchange MUST fail.
+        if (!xdh.validate(Q_S)) {
+          return false;
+        }
+
+        K = encodeAsMPInt(normalize(xdh.getSecret(Q_S)));
+
+        byte[] sig_of_H = _buf.getString();
+
+        // The hash H is computed as the HASH hash of the concatenation of the
+        // following:
+        // string V_C, client's identification string (CR and LF excluded)
+        // string V_S, server's identification string (CR and LF excluded)
+        // string I_C, payload of the client's SSH_MSG_KEXINIT
+        // string I_S, payload of the server's SSH_MSG_KEXINIT
+        // string K_S, server's public host key
+        // string Q_C, client's ephemeral public key octet string
+        // string Q_S, server's ephemeral public key octet string
+        // mpint K, shared secret
+
+        // This value is called the exchange hash, and it is used to authenti-
+        // cate the key exchange.
+        // RFC 8731,
+        // 3.1. Shared Secret Encoding
+        // The shared secret, K, is defined in [RFC4253] and [RFC5656] as an
+        // integer encoded as a multiple precision integer (mpint).
+        // Curve25519/448 outputs a binary string X, which is the 32- or 56-byte
+        // point obtained by scalar multiplication of the other side's public
+        // key and the local private key scalar. The 32 or 56 bytes of X are
+        // converted into K by interpreting the octets as an unsigned fixed-
+        // length integer encoded in network byte order.
+        //
+        // The mpint K is then encoded using the process described in Section 5
+        // of [RFC4251], and the resulting bytes are fed as described in
+        // [RFC4253] to the key exchange method's hash function to generate
+        // encryption keys.
+        buf.reset();
+        buf.putString(V_C);
+        buf.putString(V_S);
+        buf.putString(I_C);
+        buf.putString(I_S);
+        buf.putString(K_S);
+        buf.putString(Q_C);
+        buf.putString(Q_S);
+        byte[] foo = new byte[buf.getLength()];
+        buf.getByte(foo);
+
+        sha.update(foo, 0, foo.length);
+        sha.update(K, 0, K.length);
+        H = sha.digest();
+
+        i = 0;
+        j = 0;
+        j = ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000)
+            | ((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
+        String alg = Util.byte2str(K_S, i, j);
+        i += j;
+
+        boolean result = verify(alg, K_S, i, sig_of_H);
+
+        state = STATE_END;
+        return result;
+    }
+    return false;
+  }
+
+  @Override
+  public int getState() {
+    return state;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/DHXECKEM.java

@@ -0,0 +1,229 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+abstract class DHXECKEM extends KeyExchange {
+
+  private static final int SSH_MSG_KEX_ECDH_INIT = 30;
+  private static final int SSH_MSG_KEX_ECDH_REPLY = 31;
+  private int state;
+
+  byte[] Q_C;
+
+  byte[] V_S;
+  byte[] V_C;
+  byte[] I_S;
+  byte[] I_C;
+
+  byte[] e;
+
+  private Buffer buf;
+  private Packet packet;
+
+  private KEM kem;
+  private XDH xdh;
+
+  protected String kem_name;
+  protected String sha_name;
+  protected String curve_name;
+  protected int kem_pubkey_len;
+  protected int kem_encap_len;
+  protected int xec_key_len;
+
+  @Override
+  public void init(Session session, byte[] V_S, byte[] V_C, byte[] I_S, byte[] I_C)
+      throws Exception {
+    this.V_S = V_S;
+    this.V_C = V_C;
+    this.I_S = I_S;
+    this.I_C = I_C;
+
+    try {
+      Class<? extends HASH> c = Class.forName(session.getConfig(sha_name)).asSubclass(HASH.class);
+      sha = c.getDeclaredConstructor().newInstance();
+      sha.init();
+    } catch (Exception e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    buf = new Buffer();
+    packet = new Packet(buf);
+
+    packet.reset();
+    // command + string len + Q_C len
+    buf.checkFreeSize(1 + 4 + kem_pubkey_len + xec_key_len);
+    buf.putByte((byte) SSH_MSG_KEX_ECDH_INIT);
+
+    try {
+      Class<? extends KEM> k = Class.forName(session.getConfig(kem_name)).asSubclass(KEM.class);
+      kem = k.getDeclaredConstructor().newInstance();
+      kem.init();
+
+      Class<? extends XDH> c = Class.forName(session.getConfig("xdh")).asSubclass(XDH.class);
+      xdh = c.getDeclaredConstructor().newInstance();
+      xdh.init(curve_name, xec_key_len);
+
+      byte[] kem_public_key_C = kem.getPublicKey();
+      byte[] xec_public_key_C = xdh.getQ();
+      Q_C = new byte[kem_pubkey_len + xec_key_len];
+      System.arraycopy(kem_public_key_C, 0, Q_C, 0, kem_pubkey_len);
+      System.arraycopy(xec_public_key_C, 0, Q_C, kem_pubkey_len, xec_key_len);
+      buf.putString(Q_C);
+    } catch (Exception | NoClassDefFoundError e) {
+      throw new JSchException(e.toString(), e);
+    }
+
+    if (V_S == null) { // This is a really ugly hack for Session.checkKexes ;-(
+      return;
+    }
+
+    session.write(packet);
+
+    if (session.getLogger().isEnabled(Logger.INFO)) {
+      session.getLogger().log(Logger.INFO, "SSH_MSG_KEX_ECDH_INIT sent");
+      session.getLogger().log(Logger.INFO, "expecting SSH_MSG_KEX_ECDH_REPLY");
+    }
+
+    state = SSH_MSG_KEX_ECDH_REPLY;
+  }
+
+  @Override
+  public boolean next(Buffer _buf) throws Exception {
+    int i, j;
+    switch (state) {
+      case SSH_MSG_KEX_ECDH_REPLY:
+        // The server responds with:
+        // byte SSH_MSG_KEX_ECDH_REPLY
+        // string K_S, server's public host key
+        // string Q_S, server's ephemeral public key octet string
+        // string the signature on the exchange hash
+        j = _buf.getInt();
+        j = _buf.getByte();
+        j = _buf.getByte();
+        if (j != SSH_MSG_KEX_ECDH_REPLY) {
+          if (session.getLogger().isEnabled(Logger.ERROR)) {
+            session.getLogger().log(Logger.ERROR, "type: must be SSH_MSG_KEX_ECDH_REPLY " + j);
+          }
+          return false;
+        }
+
+        K_S = _buf.getString();
+
+        byte[] Q_S = _buf.getString();
+        if (Q_S.length != kem_encap_len + xec_key_len) {
+          return false;
+        }
+
+        byte[] encapsulation = new byte[kem_encap_len];
+        byte[] xec_public_key_S = new byte[xec_key_len];
+        System.arraycopy(Q_S, 0, encapsulation, 0, kem_encap_len);
+        System.arraycopy(Q_S, kem_encap_len, xec_public_key_S, 0, xec_key_len);
+
+        // RFC 5656,
+        // 4. ECDH Key Exchange
+        // All elliptic curve public keys MUST be validated after they are
+        // received. An example of a validation algorithm can be found in
+        // Section 3.2.2 of [SEC1]. If a key fails validation,
+        // the key exchange MUST fail.
+        if (!xdh.validate(xec_public_key_S)) {
+          return false;
+        }
+
+        byte[] tmp = null;
+        try {
+          tmp = kem.decapsulate(encapsulation);
+          sha.update(tmp, 0, tmp.length);
+        } finally {
+          Util.bzero(tmp);
+        }
+        try {
+          tmp = normalize(xdh.getSecret(xec_public_key_S));
+          sha.update(tmp, 0, tmp.length);
+        } finally {
+          Util.bzero(tmp);
+        }
+        K = encodeAsString(sha.digest());
+
+        byte[] sig_of_H = _buf.getString();
+
+        // The hash H is computed as the HASH hash of the concatenation of the
+        // following:
+        // string V_C, client's identification string (CR and LF excluded)
+        // string V_S, server's identification string (CR and LF excluded)
+        // string I_C, payload of the client's SSH_MSG_KEXINIT
+        // string I_S, payload of the server's SSH_MSG_KEXINIT
+        // string K_S, server's public host key
+        // string Q_C, client's ephemeral public key octet string
+        // string Q_S, server's ephemeral public key octet string
+        // string K, shared secret
+
+        // draft-josefsson-ntruprime-ssh-02,
+        // 3. Key Exchange Method: sntrup761x25519-sha512
+        // ...
+        // The SSH_MSG_KEX_ECDH_REPLY's signature value is computed as described
+        // in [RFC5656] with the following changes. Instead of encoding the
+        // shared secret K as 'mpint', it MUST be encoded as 'string'. The
+        // shared secret K value MUST be the 64-byte output octet string of the
+        // SHA-512 hash computed with the input as the 32-byte octet string key
+        // output from the key encapsulation mechanism of sntrup761 concatenated
+        // with the 32-byte octet string of X25519(a, X25519(b, 9)) = X25519(b,
+        // X25519(a, 9)).
+        buf.reset();
+        buf.putString(V_C);
+        buf.putString(V_S);
+        buf.putString(I_C);
+        buf.putString(I_S);
+        buf.putString(K_S);
+        buf.putString(Q_C);
+        buf.putString(Q_S);
+        byte[] foo = new byte[buf.getLength()];
+        buf.getByte(foo);
+
+        sha.update(foo, 0, foo.length);
+        sha.update(K, 0, K.length);
+        H = sha.digest();
+
+        i = 0;
+        j = 0;
+        j = ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000)
+            | ((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
+        String alg = Util.byte2str(K_S, i, j);
+        i += j;
+
+        boolean result = verify(alg, K_S, i, sig_of_H);
+
+        state = STATE_END;
+        return result;
+    }
+    return false;
+  }
+
+  @Override
+  public int getState() {
+    return state;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/ECDH.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2015-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface ECDH {
+  void init(int size) throws Exception;
+
+  byte[] getSecret(byte[] r, byte[] s) throws Exception;
+
+  byte[] getQ() throws Exception;
+
+  boolean validate(byte[] r, byte[] s) throws Exception;
+}

files-jsch/src/main/java/com/jcraft/jsch/ForwardedTCPIPDaemon.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public interface ForwardedTCPIPDaemon extends Runnable {
+  void setChannel(ChannelForwardedTCPIP channel, InputStream in, OutputStream out);
+
+  void setArg(Object[] arg);
+}

files-jsch/src/main/java/com/jcraft/jsch/GSSContext.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2004-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface GSSContext {
+  public void create(String user, String host) throws JSchException;
+
+  public boolean isEstablished();
+
+  public byte[] init(byte[] token, int s, int l) throws JSchException;
+
+  public byte[] getMIC(byte[] message, int s, int l);
+
+  public void dispose();
+}

files-jsch/src/main/java/com/jcraft/jsch/HASH.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface HASH {
+  void init() throws Exception;
+
+  int getBlockSize();
+
+  void update(byte[] foo, int start, int len) throws Exception;
+
+  byte[] digest() throws Exception;
+
+  default String name() {
+    return "";
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/HostKey.java

@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.util.Locale;
+
+public class HostKey {
+
+  private static final byte[][] names =
+      {Util.str2byte("ssh-dss"), Util.str2byte("ssh-rsa"), Util.str2byte("ecdsa-sha2-nistp256"),
+          Util.str2byte("ecdsa-sha2-nistp384"), Util.str2byte("ecdsa-sha2-nistp521"),
+          Util.str2byte("ssh-ed25519"), Util.str2byte("ssh-ed448")};
+
+  public static final int UNKNOWN = -1;
+  public static final int GUESS = 0;
+  public static final int SSHDSS = 1;
+  public static final int SSHRSA = 2;
+  public static final int ECDSA256 = 3;
+  public static final int ECDSA384 = 4;
+  public static final int ECDSA521 = 5;
+  public static final int ED25519 = 6;
+  public static final int ED448 = 7;
+
+  protected String marker;
+  protected String host;
+  protected int type;
+  protected byte[] key;
+  protected String comment;
+
+  public HostKey(String host, byte[] key) throws JSchException {
+    this(host, GUESS, key);
+  }
+
+  public HostKey(String host, int type, byte[] key) throws JSchException {
+    this(host, type, key, null);
+  }
+
+  public HostKey(String host, int type, byte[] key, String comment) throws JSchException {
+    this("", host, type, key, comment);
+  }
+
+  public HostKey(String marker, String host, int type, byte[] key, String comment)
+      throws JSchException {
+    this.marker = marker;
+    this.host = host;
+    if (type == GUESS) {
+      if (key[8] == 'd') {
+        this.type = SSHDSS;
+      } else if (key[8] == 'r') {
+        this.type = SSHRSA;
+      } else if (key[8] == 'e' && key[10] == '2') {
+        this.type = ED25519;
+      } else if (key[8] == 'e' && key[10] == '4') {
+        this.type = ED448;
+      } else if (key[8] == 'a' && key[20] == '2') {
+        this.type = ECDSA256;
+      } else if (key[8] == 'a' && key[20] == '3') {
+        this.type = ECDSA384;
+      } else if (key[8] == 'a' && key[20] == '5') {
+        this.type = ECDSA521;
+      } else {
+        throw new JSchException("invalid key type");
+      }
+    } else {
+      this.type = type;
+    }
+    this.key = key;
+    this.comment = comment;
+  }
+
+  public String getHost() {
+    return host;
+  }
+
+  public String getType() {
+    if (type == SSHDSS || type == SSHRSA || type == ED25519 || type == ED448 || type == ECDSA256
+        || type == ECDSA384 || type == ECDSA521) {
+      return Util.byte2str(names[type - 1]);
+    }
+    return "UNKNOWN";
+  }
+
+  protected static int name2type(String name) {
+    for (int i = 0; i < names.length; i++) {
+      if (Util.byte2str(names[i]).equals(name)) {
+        return i + 1;
+      }
+    }
+    return UNKNOWN;
+  }
+
+  public String getKey() {
+    return Util.byte2str(Util.toBase64(key, 0, key.length, true));
+  }
+
+  public String getFingerPrint(JSch jsch) {
+    HASH hash = null;
+    try {
+      String _c = JSch.getConfig("FingerprintHash").toLowerCase(Locale.ROOT);
+      Class<? extends HASH> c = Class.forName(JSch.getConfig(_c)).asSubclass(HASH.class);
+      hash = c.getDeclaredConstructor().newInstance();
+    } catch (Exception e) {
+      if (jsch.getInstanceLogger().isEnabled(Logger.ERROR)) {
+        jsch.getInstanceLogger().log(Logger.ERROR, "getFingerPrint: " + e.getMessage(), e);
+      }
+    }
+    return Util.getFingerPrint(hash, key, false, true);
+  }
+
+  public String getComment() {
+    return comment;
+  }
+
+  public String getMarker() {
+    return marker;
+  }
+
+  boolean isMatched(String _host) {
+    return isIncluded(_host);
+  }
+
+  private boolean isIncluded(String _host) {
+    int i = 0;
+    String hosts = this.host;
+    int hostslen = hosts.length();
+    int hostlen = _host.length();
+    int j;
+    while (i < hostslen) {
+      j = hosts.indexOf(',', i);
+      if (j == -1) {
+        if (hostlen != hostslen - i)
+          return false;
+        return hosts.regionMatches(true, i, _host, 0, hostlen);
+      }
+      if (hostlen == (j - i)) {
+        if (hosts.regionMatches(true, i, _host, 0, hostlen))
+          return true;
+      }
+      i = j + 1;
+    }
+    return false;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/HostKeyRepository.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2004-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface HostKeyRepository {
+  final int OK = 0;
+  final int NOT_INCLUDED = 1;
+  final int CHANGED = 2;
+
+  /**
+   * Checks if <code>host</code> is included with the <code>key</code>.
+   *
+   * @return #NOT_INCLUDED, #OK or #CHANGED
+   * @see #NOT_INCLUDED
+   * @see #OK
+   * @see #CHANGED
+   */
+  int check(String host, byte[] key);
+
+  /**
+   * Adds a host key <code>hostkey</code>
+   *
+   * @param hostkey a host key to be added
+   * @param ui a user interface for showing messages or promping inputs.
+   * @see UserInfo
+   */
+  void add(HostKey hostkey, UserInfo ui);
+
+  /**
+   * Removes a host key if there exists mached key with <code>host</code>, <code>type</code>.
+   *
+   * @see #remove(String host, String type, byte[] key)
+   */
+  void remove(String host, String type);
+
+  /**
+   * Removes a host key if there exists a matched key with <code>host</code>, <code>type</code> and
+   * <code>key</code>.
+   */
+  void remove(String host, String type, byte[] key);
+
+  /**
+   * Returns id of this repository.
+   *
+   * @return identity in String
+   */
+  String getKnownHostsRepositoryID();
+
+  /**
+   * Retuns a list for host keys managed in this repository.
+   *
+   * @see #getHostKey(String host, String type)
+   */
+  HostKey[] getHostKey();
+
+  /**
+   * Retuns a list for host keys managed in this repository.
+   *
+   * @param host a hostname used in searching host keys. If <code>null</code> is given, every host
+   *        key will be listed.
+   * @param type a key type used in searching host keys, and it should be "ssh-dss" or "ssh-rsa". If
+   *        <code>null</code> is given, a key type type will not be ignored.
+   */
+  HostKey[] getHostKey(String host, String type);
+}

files-jsch/src/main/java/com/jcraft/jsch/IO.java

@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.SocketException;
+
+class IO {
+  InputStream in;
+  OutputStream out;
+  OutputStream out_ext;
+
+  private boolean in_dontclose = false;
+  private boolean out_dontclose = false;
+  private boolean out_ext_dontclose = false;
+
+  void setOutputStream(OutputStream out) {
+    this.out = out;
+  }
+
+  void setOutputStream(OutputStream out, boolean dontclose) {
+    this.out_dontclose = dontclose;
+    setOutputStream(out);
+  }
+
+  void setExtOutputStream(OutputStream out) {
+    this.out_ext = out;
+  }
+
+  void setExtOutputStream(OutputStream out, boolean dontclose) {
+    this.out_ext_dontclose = dontclose;
+    setExtOutputStream(out);
+  }
+
+  void setInputStream(InputStream in) {
+    this.in = in;
+  }
+
+  void setInputStream(InputStream in, boolean dontclose) {
+    this.in_dontclose = dontclose;
+    setInputStream(in);
+  }
+
+  void put(Packet p) throws IOException, SocketException {
+    out.write(p.buffer.buffer, 0, p.buffer.index);
+    out.flush();
+  }
+
+  void put(byte[] array, int begin, int length) throws IOException {
+    out.write(array, begin, length);
+    out.flush();
+  }
+
+  void put_ext(byte[] array, int begin, int length) throws IOException {
+    out_ext.write(array, begin, length);
+    out_ext.flush();
+  }
+
+  int getByte() throws IOException {
+    return in.read();
+  }
+
+  void getByte(byte[] array) throws IOException {
+    getByte(array, 0, array.length);
+  }
+
+  void getByte(byte[] array, int begin, int length) throws IOException {
+    do {
+      int completed = in.read(array, begin, length);
+      if (completed < 0) {
+        throw new IOException("End of IO Stream Read");
+      }
+      begin += completed;
+      length -= completed;
+    } while (length > 0);
+  }
+
+  void out_close() {
+    try {
+      if (out != null && !out_dontclose)
+        out.close();
+      out = null;
+    } catch (Exception ee) {
+    }
+  }
+
+  void close() {
+    try {
+      if (in != null && !in_dontclose)
+        in.close();
+      in = null;
+    } catch (Exception ee) {
+    }
+
+    out_close();
+
+    try {
+      if (out_ext != null && !out_ext_dontclose)
+        out_ext.close();
+      out_ext = null;
+    } catch (Exception ee) {
+    }
+  }
+
+  /*
+   * void finalize() throws Throwable{ try{ if(in!=null) in.close(); } catch(Exception ee){} try{
+   * if(out!=null) out.close(); } catch(Exception ee){} try{ if(out_ext!=null) out_ext.close(); }
+   * catch(Exception ee){} }
+   */
+}

files-jsch/src/main/java/com/jcraft/jsch/Identity.java

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+public interface Identity {
+
+  /**
+   * Decrypts this identity with the specified pass-phrase.
+   *
+   * @param passphrase the pass-phrase for this identity.
+   * @return <code>true</code> if the decryption is succeeded or this identity is not cyphered.
+   */
+  public boolean setPassphrase(byte[] passphrase) throws JSchException;
+
+  /**
+   * Returns the public-key blob.
+   *
+   * @return the public-key blob
+   */
+  public byte[] getPublicKeyBlob();
+
+  /**
+   * Signs on data with this identity, and returns the result.
+   *
+   * <p>
+   * <em>IMPORTANT NOTE:</em> <br>
+   * The {@link #getSignature(byte[], String)} method should be overridden to ensure {@code ssh-rsa}
+   * type public keys function with the {@code rsa-sha2-256} or {@code rsa-sha2-512} signature
+   * algorithms.
+   *
+   * @param data data to be signed
+   * @return the signature
+   * @see #getSignature(byte[], String)
+   */
+  public byte[] getSignature(byte[] data);
+
+  /**
+   * Signs on data with this identity, and returns the result.
+   *
+   * <p>
+   * <em>IMPORTANT NOTE:</em> <br>
+   * The default implementation of this method simply calls {@link #getSignature(byte[])}, which
+   * will fail with {@code ssh-rsa} type public keys when utilized with the {@code rsa-sha2-256} or
+   * {@code rsa-sha2-512} signature algorithms: <br>
+   * it exists only to maintain backwards compatibility of this interface.
+   *
+   * <p>
+   * This default method should be overridden by implementations to ensure the {@code rsa-sha2-256}
+   * and {@code rsa-sha2-512} signature algorithms function correctly.
+   *
+   * @param data data to be signed
+   * @param alg signature algorithm to use
+   * @return the signature
+   * @since 0.1.57
+   * @see #getSignature(byte[])
+   */
+  public default byte[] getSignature(byte[] data, String alg) {
+    return getSignature(data);
+  }
+
+  /**
+   * This method is deprecated and the default implmentation of this method will throw an
+   * {@link UnsupportedOperationException}.
+   *
+   * @deprecated The decryption should be done automatically in {@link #setPassphrase(byte[])}
+   * @return <code>true</code> if the decryption is succeeded or this identity is not cyphered.
+   * @see #setPassphrase(byte[])
+   */
+  @Deprecated
+  public default boolean decrypt() {
+    throw new UnsupportedOperationException("not implemented");
+  }
+
+  /**
+   * Returns the name of the key algorithm.
+   *
+   * @return the name of the key algorithm
+   */
+  public String getAlgName();
+
+  /**
+   * Returns the name of this identity. It will be useful to identify this object in the
+   * {@link IdentityRepository}.
+   *
+   * @return the name of this identity
+   */
+  public String getName();
+
+  /**
+   * Returns <code>true</code> if this identity is cyphered.
+   *
+   * @return <code>true</code> if this identity is cyphered.
+   */
+  public boolean isEncrypted();
+
+  /** Disposes internally allocated data, like byte array for the private key. */
+  public void clear();
+}

files-jsch/src/main/java/com/jcraft/jsch/IdentityFile.java

@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+class IdentityFile implements Identity {
+  private KeyPair kpair;
+  private String identity;
+
+  static IdentityFile newInstance(String prvfile, String pubfile, JSch.InstanceLogger instLogger)
+      throws JSchException {
+    KeyPair kpair = KeyPair.load(instLogger, prvfile, pubfile);
+    return new IdentityFile(prvfile, kpair);
+  }
+
+  static IdentityFile newInstance(String name, byte[] prvkey, byte[] pubkey,
+      JSch.InstanceLogger instLogger) throws JSchException {
+
+    KeyPair kpair = KeyPair.load(instLogger, prvkey, pubkey);
+    return new IdentityFile(name, kpair);
+  }
+
+  private IdentityFile(String name, KeyPair kpair) {
+    this.identity = name;
+    this.kpair = kpair;
+  }
+
+  /**
+   * Decrypts this identity with the specified pass-phrase.
+   *
+   * @param passphrase the pass-phrase for this identity.
+   * @return <code>true</code> if the decryption is succeeded or this identity is not cyphered.
+   */
+  @Override
+  public boolean setPassphrase(byte[] passphrase) throws JSchException {
+    return kpair.decrypt(passphrase);
+  }
+
+  /**
+   * Returns the public-key blob.
+   *
+   * @return the public-key blob
+   */
+  @Override
+  public byte[] getPublicKeyBlob() {
+    return kpair.getPublicKeyBlob();
+  }
+
+  /**
+   * Signs on data with this identity, and returns the result.
+   *
+   * @param data data to be signed
+   * @return the signature
+   */
+  @Override
+  public byte[] getSignature(byte[] data) {
+    return kpair.getSignature(data);
+  }
+
+  /**
+   * Signs on data with this identity, and returns the result.
+   *
+   * @param data data to be signed
+   * @param alg signature algorithm to use
+   * @return the signature
+   */
+  @Override
+  public byte[] getSignature(byte[] data, String alg) {
+    return kpair.getSignature(data, alg);
+  }
+
+  /**
+   * Returns the name of the key algorithm.
+   *
+   * @return the name of the key algorithm
+   */
+  @Override
+  public String getAlgName() {
+    return kpair.getKeyTypeString();
+  }
+
+  /**
+   * Returns the name of this identity. It will be useful to identify this object in the
+   * {@link IdentityRepository}.
+   *
+   * @return the name of this identity
+   */
+  @Override
+  public String getName() {
+    return identity;
+  }
+
+  /**
+   * Returns <code>true</code> if this identity is cyphered.
+   *
+   * @return <code>true</code> if this identity is cyphered.
+   */
+  @Override
+  public boolean isEncrypted() {
+    return kpair.isEncrypted();
+  }
+
+  /** Disposes internally allocated data, like byte array for the private key. */
+  @Override
+  public void clear() {
+    kpair.dispose();
+    kpair = null;
+  }
+
+  /**
+   * Returns an instance of {@link KeyPair} used in this {@link Identity}.
+   *
+   * @return an instance of {@link KeyPair} used in this {@link Identity}.
+   */
+  public KeyPair getKeyPair() {
+    return kpair;
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/IdentityRepository.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2012-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.util.Vector;
+
+public interface IdentityRepository {
+  public static final int UNAVAILABLE = 0;
+  public static final int NOTRUNNING = 1;
+  public static final int RUNNING = 2;
+
+  public String getName();
+
+  public int getStatus();
+
+  public Vector<Identity> getIdentities();
+
+  public boolean add(byte[] identity);
+
+  public boolean remove(byte[] blob);
+
+  public void removeAll();
+}

files-jsch/src/main/java/com/jcraft/jsch/IdentityRepositoryWrapper.java

@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2012-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.util.Vector;
+
+/**
+ * JSch will accept ciphered keys, but some implementations of IdentityRepository can not. For
+ * example, IdentityRepository for ssh-agent and pageant only accept plain keys. The following class
+ * has been introduced to cache ciphered keys for them, and pass them whenever they are de-ciphered.
+ */
+class IdentityRepositoryWrapper implements IdentityRepository {
+  private IdentityRepository ir;
+  private Vector<Identity> cache = new Vector<>();
+  private boolean keep_in_cache = false;
+
+  IdentityRepositoryWrapper(IdentityRepository ir) {
+    this(ir, false);
+  }
+
+  IdentityRepositoryWrapper(IdentityRepository ir, boolean keep_in_cache) {
+    this.ir = ir;
+    this.keep_in_cache = keep_in_cache;
+  }
+
+  @Override
+  public String getName() {
+    return ir.getName();
+  }
+
+  @Override
+  public int getStatus() {
+    return ir.getStatus();
+  }
+
+  @Override
+  public boolean add(byte[] identity) {
+    return ir.add(identity);
+  }
+
+  @Override
+  public boolean remove(byte[] blob) {
+    return ir.remove(blob);
+  }
+
+  @Override
+  public void removeAll() {
+    cache.removeAllElements();
+    ir.removeAll();
+  }
+
+  @Override
+  public Vector<Identity> getIdentities() {
+    Vector<Identity> result = new Vector<>();
+    for (int i = 0; i < cache.size(); i++) {
+      Identity identity = cache.elementAt(i);
+      result.add(identity);
+    }
+    Vector<Identity> tmp = ir.getIdentities();
+    for (int i = 0; i < tmp.size(); i++) {
+      result.add(tmp.elementAt(i));
+    }
+    return result;
+  }
+
+  void add(Identity identity) {
+    if (!keep_in_cache && !identity.isEncrypted() && (identity instanceof IdentityFile)) {
+      try {
+        ir.add(((IdentityFile) identity).getKeyPair().forSSHAgent());
+      } catch (JSchException e) {
+        // an exception will not be thrown.
+      }
+    } else
+      cache.addElement(identity);
+  }
+
+  void check() {
+    if (cache.size() > 0) {
+      Object[] identities = cache.toArray();
+      for (int i = 0; i < identities.length; i++) {
+        Identity identity = (Identity) (identities[i]);
+        cache.removeElement(identity);
+        add(identity);
+      }
+    }
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/JSch.java

@@ -0,0 +1,694 @@
+/*
+ * Copyright (c) 2002-2018 ymnk, JCraft,Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are permitted
+ * provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of conditions
+ * and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other materials provided with
+ * the distribution.
+ *
+ * 3. The names of the authors may not be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL JCRAFT, INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.jcraft.jsch;
+
+import java.io.InputStream;
+import java.util.Enumeration;
+import java.util.Hashtable;
+import java.util.Vector;
+
+public class JSch {
+  /** The version number. */
+  public static final String VERSION = Version.getVersion();
+
+  static Hashtable<String, String> config = new Hashtable<>();
+
+  static {
+    config.put("kex", Util.getSystemProperty("jsch.kex",
+        "curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256"));
+    config.put("server_host_key", Util.getSystemProperty("jsch.server_host_key",
+        "ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256"));
+    config.put("prefer_known_host_key_types",
+        Util.getSystemProperty("jsch.prefer_known_host_key_types", "yes"));
+    config.put("enable_strict_kex", Util.getSystemProperty("jsch.enable_strict_kex", "yes"));
+    config.put("require_strict_kex", Util.getSystemProperty("jsch.require_strict_kex", "no"));
+    config.put("enable_server_sig_algs",
+        Util.getSystemProperty("jsch.enable_server_sig_algs", "yes"));
+    config.put("enable_ext_info_in_auth",
+        Util.getSystemProperty("jsch.enable_ext_info_in_auth", "yes"));
+    config.put("cipher.s2c", Util.getSystemProperty("jsch.cipher",
+        "aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com"));
+    config.put("cipher.c2s", Util.getSystemProperty("jsch.cipher",
+        "aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com"));
+    config.put("mac.s2c", Util.getSystemProperty("jsch.mac",
+        "hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1"));
+    config.put("mac.c2s", Util.getSystemProperty("jsch.mac",
+        "hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1"));
+    config.put("compression.s2c", Util.getSystemProperty("jsch.compression", "none"));
+    config.put("compression.c2s", Util.getSystemProperty("jsch.compression", "none"));
+
+    config.put("lang.s2c", Util.getSystemProperty("jsch.lang", ""));
+    config.put("lang.c2s", Util.getSystemProperty("jsch.lang", ""));
+
+    config.put("dhgex_min", Util.getSystemProperty("jsch.dhgex_min", "2048"));
+    config.put("dhgex_max", Util.getSystemProperty("jsch.dhgex_max", "8192"));
+    config.put("dhgex_preferred", Util.getSystemProperty("jsch.dhgex_preferred", "3072"));
+
+    config.put("compression_level", Util.getSystemProperty("jsch.compression_level", "6"));
+
+    config.put("diffie-hellman-group-exchange-sha1", "com.jcraft.jsch.DHGEX1");
+    config.put("diffie-hellman-group1-sha1", "com.jcraft.jsch.DHG1");
+    config.put("diffie-hellman-group14-sha1", "com.jcraft.jsch.DHG14");
+    config.put("diffie-hellman-group-exchange-sha256", "com.jcraft.jsch.DHGEX256");
+    config.put("diffie-hellman-group-exchange-sha224@ssh.com", "com.jcraft.jsch.DHGEX224");
+    config.put("diffie-hellman-group-exchange-sha384@ssh.com", "com.jcraft.jsch.DHGEX384");
+    config.put("diffie-hellman-group-exchange-sha512@ssh.com", "com.jcraft.jsch.DHGEX512");
+    config.put("diffie-hellman-group14-sha256", "com.jcraft.jsch.DHG14256");
+    config.put("diffie-hellman-group15-sha512", "com.jcraft.jsch.DHG15");
+    config.put("diffie-hellman-group16-sha512", "com.jcraft.jsch.DHG16");
+    config.put("diffie-hellman-group17-sha512", "com.jcraft.jsch.DHG17");
+    config.put("diffie-hellman-group18-sha512", "com.jcraft.jsch.DHG18");
+    config.put("diffie-hellman-group14-sha256@ssh.com", "com.jcraft.jsch.DHG14256");
+    config.put("diffie-hellman-group14-sha224@ssh.com", "com.jcraft.jsch.DHG14224");
+    config.put("diffie-hellman-group15-sha256@ssh.com", "com.jcraft.jsch.DHG15256");
+    config.put("diffie-hellman-group15-sha384@ssh.com", "com.jcraft.jsch.DHG15384");
+    config.put("diffie-hellman-group16-sha512@ssh.com", "com.jcraft.jsch.DHG16");
+    config.put("diffie-hellman-group16-sha384@ssh.com", "com.jcraft.jsch.DHG16384");
+    config.put("diffie-hellman-group18-sha512@ssh.com", "com.jcraft.jsch.DHG18");
+    config.put("ecdsa-sha2-nistp256", "com.jcraft.jsch.jce.SignatureECDSA256");
+    config.put("ecdsa-sha2-nistp384", "com.jcraft.jsch.jce.SignatureECDSA384");
+    config.put("ecdsa-sha2-nistp521", "com.jcraft.jsch.jce.SignatureECDSA521");
+
+    config.put("ecdh-sha2-nistp256", "com.jcraft.jsch.DHEC256");
+    config.put("ecdh-sha2-nistp384", "com.jcraft.jsch.DHEC384");
+    config.put("ecdh-sha2-nistp521", "com.jcraft.jsch.DHEC521");
+
+    config.put("ecdh-sha2-nistp", "com.jcraft.jsch.jce.ECDHN");
+
+    config.put("curve25519-sha256", "com.jcraft.jsch.DH25519");
+    config.put("curve25519-sha256@libssh.org", "com.jcraft.jsch.DH25519");
+    config.put("curve448-sha512", "com.jcraft.jsch.DH448");
+    config.put("sntrup761x25519-sha512@openssh.com", "com.jcraft.jsch.DH25519SNTRUP761");
+
+    config.put("sntrup761", "com.jcraft.jsch.bc.SNTRUP761");
+
+    config.put("dh", "com.jcraft.jsch.jce.DH");
+    config.put("3des-cbc", "com.jcraft.jsch.jce.TripleDESCBC");
+    config.put("blowfish-cbc", "com.jcraft.jsch.jce.BlowfishCBC");
+    config.put("hmac-sha1", "com.jcraft.jsch.jce.HMACSHA1");
+    config.put("hmac-sha1-96", "com.jcraft.jsch.jce.HMACSHA196");
+    config.put("hmac-sha2-256", "com.jcraft.jsch.jce.HMACSHA256");
+    config.put("hmac-sha2-512", "com.jcraft.jsch.jce.HMACSHA512");
+    config.put("hmac-md5", "com.jcraft.jsch.jce.HMACMD5");
+    config.put("hmac-md5-96", "com.jcraft.jsch.jce.HMACMD596");
+    config.put("hmac-sha1-etm@openssh.com", "com.jcraft.jsch.jce.HMACSHA1ETM");
+    config.put("hmac-sha1-96-etm@openssh.com", "com.jcraft.jsch.jce.HMACSHA196ETM");
+    config.put("hmac-sha2-256-etm@openssh.com", "com.jcraft.jsch.jce.HMACSHA256ETM");
+    config.put("hmac-sha2-512-etm@openssh.com", "com.jcraft.jsch.jce.HMACSHA512ETM");
+    config.put("hmac-md5-etm@openssh.com", "com.jcraft.jsch.jce.HMACMD5ETM");
+    config.put("hmac-md5-96-etm@openssh.com", "com.jcraft.jsch.jce.HMACMD596ETM");
+    config.put("hmac-sha256-2@ssh.com", "com.jcraft.jsch.jce.HMACSHA2562SSHCOM");
+    config.put("hmac-sha224@ssh.com", "com.jcraft.jsch.jce.HMACSHA224SSHCOM");
+    config.put("hmac-sha256@ssh.com", "com.jcraft.jsch.jce.HMACSHA256SSHCOM");
+    config.put("hmac-sha384@ssh.com", "com.jcraft.jsch.jce.HMACSHA384SSHCOM");
+    config.put("hmac-sha512@ssh.com", "com.jcraft.jsch.jce.HMACSHA512SSHCOM");
+    config.put("sha-1", "com.jcraft.jsch.jce.SHA1");
+    config.put("sha-224", "com.jcraft.jsch.jce.SHA224");
+    config.put("sha-256", "com.jcraft.jsch.jce.SHA256");
+    config.put("sha-384", "com.jcraft.jsch.jce.SHA384");
+    config.put("sha-512", "com.jcraft.jsch.jce.SHA512");
+    config.put("md5", "com.jcraft.jsch.jce.MD5");
+    config.put("sha1", "com.jcraft.jsch.jce.SHA1");
+    config.put("sha224", "com.jcraft.jsch.jce.SHA224");
+    config.put("sha256", "com.jcraft.jsch.jce.SHA256");
+    config.put("sha384", "com.jcraft.jsch.jce.SHA384");
+    config.put("sha512", "com.jcraft.jsch.jce.SHA512");
+    config.put("signature.dss", "com.jcraft.jsch.jce.SignatureDSA");
+    config.put("ssh-rsa", "com.jcraft.jsch.jce.SignatureRSA");
+    config.put("rsa-sha2-256", "com.jcraft.jsch.jce.SignatureRSASHA256");
+    config.put("rsa-sha2-512", "com.jcraft.jsch.jce.SignatureRSASHA512");
+    config.put("ssh-rsa-sha224@ssh.com", "com.jcraft.jsch.jce.SignatureRSASHA224SSHCOM");
+    config.put("ssh-rsa-sha256@ssh.com", "com.jcraft.jsch.jce.SignatureRSASHA256SSHCOM");
+    config.put("ssh-rsa-sha384@ssh.com", "com.jcraft.jsch.jce.SignatureRSASHA384SSHCOM");
+    config.put("ssh-rsa-sha512@ssh.com", "com.jcraft.jsch.jce.SignatureRSASHA512SSHCOM");
+    config.put("keypairgen.dsa", "com.jcraft.jsch.jce.KeyPairGenDSA");
+    config.put("keypairgen.rsa", "com.jcraft.jsch.jce.KeyPairGenRSA");
+    config.put("keypairgen.ecdsa", "com.jcraft.jsch.jce.KeyPairGenECDSA");
+    config.put("random", "com.jcraft.jsch.jce.Random");
+
+    config.put("hmac-ripemd160", "com.jcraft.jsch.bc.HMACRIPEMD160");
+    config.put("hmac-ripemd160@openssh.com", "com.jcraft.jsch.bc.HMACRIPEMD160OpenSSH");
+    config.put("hmac-ripemd160-etm@openssh.com", "com.jcraft.jsch.bc.HMACRIPEMD160ETM");
+
+    config.put("none", "com.jcraft.jsch.CipherNone");
+
+    config.put("aes128-gcm@openssh.com", "com.jcraft.jsch.jce.AES128GCM");
+    config.put("aes256-gcm@openssh.com", "com.jcraft.jsch.jce.AES256GCM");
+
+    config.put("aes128-cbc", "com.jcraft.jsch.jce.AES128CBC");
+    config.put("aes192-cbc", "com.jcraft.jsch.jce.AES192CBC");
+    config.put("aes256-cbc", "com.jcraft.jsch.jce.AES256CBC");
+    config.put("rijndael-cbc@lysator.liu.se", "com.jcraft.jsch.jce.AES256CBC");
+
+    config.put("chacha20-poly1305@openssh.com", "com.jcraft.jsch.bc.ChaCha20Poly1305");
+    config.put("cast128-cbc", "com.jcraft.jsch.bc.CAST128CBC");
+    config.put("cast128-ctr", "com.jcraft.jsch.bc.CAST128CTR");
+    config.put("twofish128-cbc", "com.jcraft.jsch.bc.Twofish128CBC");
+    config.put("twofish192-cbc", "com.jcraft.jsch.bc.Twofish192CBC");
+    config.put("twofish256-cbc", "com.jcraft.jsch.bc.Twofish256CBC");
+    config.put("twofish-cbc", "com.jcraft.jsch.bc.Twofish256CBC");
+    config.put("twofish128-ctr", "com.jcraft.jsch.bc.Twofish128CTR");
+    config.put("twofish192-ctr", "com.jcraft.jsch.bc.Twofish192CTR");
+    config.put("twofish256-ctr", "com.jcraft.jsch.bc.Twofish256CTR");
+    config.put("seed-cbc@ssh.com", "com.jcraft.jsch.bc.SEEDCBC");
+
+    config.put("aes128-ctr", "com.jcraft.jsch.jce.AES128CTR");
+    config.put("aes192-ctr", "com.jcraft.jsch.jce.AES192CTR");
+    config.put("aes256-ctr", "com.jcraft.jsch.jce.AES256CTR");
+    config.put("3des-ctr", "com.jcraft.jsch.jce.TripleDESCTR");
+    config.put("blowfish-ctr", "com.jcraft.jsch.jce.BlowfishCTR");
+    config.put("arcfour", "com.jcraft.jsch.jce.ARCFOUR");
+    config.put("arcfour128", "com.jcraft.jsch.jce.ARCFOUR128");
+    config.put("arcfour256", "com.jcraft.jsch.jce.ARCFOUR256");
+
+    config.put("userauth.none", "com.jcraft.jsch.UserAuthNone");
+    config.put("userauth.password", "com.jcraft.jsch.UserAuthPassword");
+    config.put("userauth.keyboard-interactive", "com.jcraft.jsch.UserAuthKeyboardInteractive");
+    config.put("userauth.publickey", "com.jcraft.jsch.UserAuthPublicKey");
+    config.put("userauth.gssapi-with-mic", "com.jcraft.jsch.UserAuthGSSAPIWithMIC");
+    config.put("gssapi-with-mic.krb5", "com.jcraft.jsch.jgss.GSSContextKrb5");
+
+    config.put("zlib", "com.jcraft.jsch.jzlib.Compression");
+    config.put("zlib@openssh.com", "com.jcraft.jsch.jzlib.Compression");
+
+    config.put("pbkdf", "com.jcraft.jsch.jce.PBKDF");
+    config.put("pbkdf2-hmac-sha1", "com.jcraft.jsch.jce.PBKDF2HMACSHA1");
+    config.put("pbkdf2-hmac-sha224", "com.jcraft.jsch.jce.PBKDF2HMACSHA224");
+    config.put("pbkdf2-hmac-sha256", "com.jcraft.jsch.jce.PBKDF2HMACSHA256");
+    config.put("pbkdf2-hmac-sha384", "com.jcraft.jsch.jce.PBKDF2HMACSHA384");
+    config.put("pbkdf2-hmac-sha512", "com.jcraft.jsch.jce.PBKDF2HMACSHA512");
+    config.put("pbkdf2-hmac-sha512-224", "com.jcraft.jsch.jce.PBKDF2HMACSHA512224");
+    config.put("pbkdf2-hmac-sha512-256", "com.jcraft.jsch.jce.PBKDF2HMACSHA512256");
+    config.put("bcrypt", "com.jcraft.jsch.jbcrypt.JBCrypt");
+    config.put("argon2", "com.jcraft.jsch.bc.Argon2");
+    config.put("scrypt", "com.jcraft.jsch.bc.SCrypt");
+
+    if (JavaVersion.getVersion() >= 11) {
+      config.put("xdh", "com.jcraft.jsch.jce.XDH");
+    } else {
+      config.put("xdh", "com.jcraft.jsch.bc.XDH");
+    }
+
+    if (JavaVersion.getVersion() >= 15) {
+      config.put("keypairgen.eddsa", "com.jcraft.jsch.jce.KeyPairGenEdDSA");
+      config.put("ssh-ed25519", "com.jcraft.jsch.jce.SignatureEd25519");
+      config.put("ssh-ed448", "com.jcraft.jsch.jce.SignatureEd448");
+    } else {
+      config.put("keypairgen.eddsa", "com.jcraft.jsch.bc.KeyPairGenEdDSA");
+      config.put("ssh-ed25519", "com.jcraft.jsch.bc.SignatureEd25519");
+      config.put("ssh-ed448", "com.jcraft.jsch.bc.SignatureEd448");
+    }
+    config.put("keypairgen_fromprivate.eddsa", "com.jcraft.jsch.bc.KeyPairGenEdDSA");
+
+    config.put("StrictHostKeyChecking", "ask");
+    config.put("HashKnownHosts", "no");
+
+    config.put("PreferredAuthentications", Util.getSystemProperty("jsch.preferred_authentications",
+        "gssapi-with-mic,publickey,keyboard-interactive,password"));
+    config.put("PubkeyAcceptedAlgorithms", Util.getSystemProperty("jsch.client_pubkey",
+        "ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256"));
+    config.put("enable_pubkey_auth_query",
+        Util.getSystemProperty("jsch.enable_pubkey_auth_query", "yes"));
+    config.put("try_additional_pubkey_algorithms",
+        Util.getSystemProperty("jsch.try_additional_pubkey_algorithms", "yes"));
+    config.put("enable_auth_none", Util.getSystemProperty("jsch.enable_auth_none", "yes"));
+    config.put("use_sftp_write_flush_workaround",
+        Util.getSystemProperty("jsch.use_sftp_write_flush_workaround", "yes"));
+
+    config.put("CheckCiphers",
+        Util.getSystemProperty("jsch.check_ciphers", "chacha20-poly1305@openssh.com"));
+    config.put("CheckMacs", Util.getSystemProperty("jsch.check_macs", ""));
+    config.put("CheckKexes", Util.getSystemProperty("jsch.check_kexes",
+        "sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512"));
+    config.put("CheckSignatures",
+        Util.getSystemProperty("jsch.check_signatures", "ssh-ed25519,ssh-ed448"));
+    config.put("FingerprintHash", Util.getSystemProperty("jsch.fingerprint_hash", "sha256"));
+
+    config.put("MaxAuthTries", Util.getSystemProperty("jsch.max_auth_tries", "6"));
+    config.put("ClearAllForwardings", "no");
+  }
+
+  final InstanceLogger instLogger = new InstanceLogger();
+
+  private Vector<Session> sessionPool = new Vector<>();
+
+  private IdentityRepository defaultIdentityRepository = new LocalIdentityRepository(instLogger);
+
+  private IdentityRepository identityRepository = defaultIdentityRepository;
+
+  private ConfigRepository configRepository = null;
+
+  /**
+   * Sets the <code>identityRepository</code>, which will be referred in the public key
+   * authentication.
+   *
+   * @param identityRepository if <code>null</code> is given, the default repository, which usually
+   *        refers to ~/.ssh/, will be used.
+   * @see #getIdentityRepository()
+   */
+  public synchronized void setIdentityRepository(IdentityRepository identityRepository) {
+    if (identityRepository == null) {
+      this.identityRepository = defaultIdentityRepository;
+    } else {
+      this.identityRepository = identityRepository;
+    }
+  }
+
+  public synchronized IdentityRepository getIdentityRepository() {
+    return this.identityRepository;
+  }
+
+  public ConfigRepository getConfigRepository() {
+    return this.configRepository;
+  }
+
+  public void setConfigRepository(ConfigRepository configRepository) {
+    this.configRepository = configRepository;
+  }
+
+  private HostKeyRepository known_hosts = null;
+
+  static final Logger DEVNULL = new Logger() {
+    @Override
+    public boolean isEnabled(int level) {
+      return false;
+    }
+
+    @Override
+    public void log(int level, String message) {}
+  };
+  static Logger logger = DEVNULL;
+
+  public JSch() {}
+
+  /**
+   * Instantiates the <code>Session</code> object with <code>host</code>. The user name and port
+   * number will be retrieved from ConfigRepository. If user name is not given, the system property
+   * "user.name" will be referred.
+   *
+   * @param host hostname
+   * @throws JSchException if <code>username</code> or <code>host</code> are invalid.
+   * @return the instance of <code>Session</code> class.
+   * @see #getSession(String username, String host, int port)
+   * @see Session
+   * @see ConfigRepository
+   */
+  public Session getSession(String host) throws JSchException {
+    return getSession(null, host, 22);
+  }
+
+  /**
+   * Instantiates the <code>Session</code> object with <code>username</code> and <code>host</code>.
+   * The TCP port 22 will be used in making the connection. Note that the TCP connection must not be
+   * established until Session#connect().
+   *
+   * @param username user name
+   * @param host hostname
+   * @throws JSchException if <code>username</code> or <code>host</code> are invalid.
+   * @return the instance of <code>Session</code> class.
+   * @see #getSession(String username, String host, int port)
+   * @see Session
+   */
+  public Session getSession(String username, String host) throws JSchException {
+    return getSession(username, host, 22);
+  }
+
+  /**
+   * Instantiates the <code>Session</code> object with given <code>username</code>,
+   * <code>host</code> and <code>port</code>. Note that the TCP connection must not be established
+   * until Session#connect().
+   *
+   * @param username user name
+   * @param host hostname
+   * @param port port number
+   * @throws JSchException if <code>username</code> or <code>host</code> are invalid.
+   * @return the instance of <code>Session</code> class.
+   * @see #getSession(String username, String host, int port)
+   * @see Session
+   */
+  public Session getSession(String username, String host, int port) throws JSchException {
+    if (host == null) {
+      throw new JSchException("host must not be null.");
+    }
+    Session s = new Session(this, username, host, port);
+    return s;
+  }
+
+  protected void addSession(Session session) {
+    synchronized (sessionPool) {
+      sessionPool.addElement(session);
+    }
+  }
+
+  protected boolean removeSession(Session session) {
+    synchronized (sessionPool) {
+      return sessionPool.remove(session);
+    }
+  }
+
+  /**
+   * Sets the hostkey repository.
+   *
+   * @param hkrepo
+   * @see HostKeyRepository
+   * @see KnownHosts
+   */
+  public void setHostKeyRepository(HostKeyRepository hkrepo) {
+    known_hosts = hkrepo;
+  }
+
+  /**
+   * Sets the instance of <code>KnownHosts</code>, which refers to <code>filename</code>.
+   *
+   * @param filename filename of known_hosts file.
+   * @throws JSchException if the given filename is invalid.
+   * @see KnownHosts
+   */
+  public void setKnownHosts(String filename) throws JSchException {
+    if (known_hosts == null)
+      known_hosts = new KnownHosts(this);
+    if (known_hosts instanceof KnownHosts) {
+      synchronized (known_hosts) {
+        ((KnownHosts) known_hosts).setKnownHosts(filename);
+      }
+    }
+  }
+
+  /**
+   * Sets the instance of <code>KnownHosts</code> generated with <code>stream</code>.
+   *
+   * @param stream the instance of InputStream from known_hosts file.
+   * @throws JSchException if an I/O error occurs.
+   * @see KnownHosts
+   */
+  public void setKnownHosts(InputStream stream) throws JSchException {
+    if (known_hosts == null)
+      known_hosts = new KnownHosts(this);
+    if (known_hosts instanceof KnownHosts) {
+      synchronized (known_hosts) {
+        ((KnownHosts) known_hosts).setKnownHosts(stream);
+      }
+    }
+  }
+
+  /**
+   * Returns the current hostkey repository. By the default, this method will the instance of
+   * <code>KnownHosts</code>.
+   *
+   * @return current hostkey repository.
+   * @see HostKeyRepository
+   * @see KnownHosts
+   */
+  public HostKeyRepository getHostKeyRepository() {
+    if (known_hosts == null)
+      known_hosts = new KnownHosts(this);
+    return known_hosts;
+  }
+
+  /**
+   * Sets the private key, which will be referred in the public key authentication.
+   *
+   * @param prvkey filename of the private key.
+   * @throws JSchException if <code>prvkey</code> is invalid.
+   * @see #addIdentity(String prvkey, String passphrase)
+   */
+  public void addIdentity(String prvkey) throws JSchException {
+    addIdentity(prvkey, (byte[]) null);
+  }
+
+  /**
+   * Sets the private key, which will be referred in the public key authentication. Before
+   * registering it into identityRepository, it will be deciphered with <code>passphrase</code>.
+   *
+   * @param prvkey filename of the private key.
+   * @param passphrase passphrase for <code>prvkey</code>.
+   * @throws JSchException if <code>passphrase</code> is not right.
+   * @see #addIdentity(String prvkey, byte[] passphrase)
+   */
+  public void addIdentity(String prvkey, String passphrase) throws JSchException {
+    byte[] _passphrase = null;
+    if (passphrase != null) {
+      _passphrase = Util.str2byte(passphrase);
+    }
+    addIdentity(prvkey, _passphrase);
+    if (_passphrase != null)
+      Util.bzero(_passphrase);
+  }
+
+  /**
+   * Sets the private key, which will be referred in the public key authentication. Before
+   * registering it into identityRepository, it will be deciphered with <code>passphrase</code>.
+   *
+   * @param prvkey filename of the private key.
+   * @param passphrase passphrase for <code>prvkey</code>.
+   * @throws JSchException if <code>passphrase</code> is not right.
+   * @see #addIdentity(String prvkey, String pubkey, byte[] passphrase)
+   */
+  public void addIdentity(String prvkey, byte[] passphrase) throws JSchException {
+    Identity identity = IdentityFile.newInstance(prvkey, null, instLogger);
+    addIdentity(identity, passphrase);
+  }
+
+  /**
+   * Sets the private key, which will be referred in the public key authentication. Before
+   * registering it into identityRepository, it will be deciphered with <code>passphrase</code>.
+   *
+   * @param prvkey filename of the private key.
+   * @param pubkey filename of the public key.
+   * @param passphrase passphrase for <code>prvkey</code>.
+   * @throws JSchException if <code>passphrase</code> is not right.
+   */
+  public void addIdentity(String prvkey, String pubkey, byte[] passphrase) throws JSchException {
+    Identity identity = IdentityFile.newInstance(prvkey, pubkey, instLogger);
+    addIdentity(identity, passphrase);
+  }
+
+  /**
+   * Sets the private key, which will be referred in the public key authentication. Before
+   * registering it into identityRepository, it will be deciphered with <code>passphrase</code>.
+   *
+   * @param name name of the identity to be used to retrieve it in the identityRepository.
+   * @param prvkey private key in byte array.
+   * @param pubkey public key in byte array.
+   * @param passphrase passphrase for <code>prvkey</code>.
+   */
+  public void addIdentity(String name, byte[] prvkey, byte[] pubkey, byte[] passphrase)
+      throws JSchException {
+    Identity identity = IdentityFile.newInstance(name, prvkey, pubkey, instLogger);
+    addIdentity(identity, passphrase);
+  }
+
+  /**
+   * Sets the private key, which will be referred in the public key authentication. Before
+   * registering it into identityRepository, it will be deciphered with <code>passphrase</code>.
+   *
+   * @param identity private key.
+   * @param passphrase passphrase for <code>identity</code>.
+   * @throws JSchException if <code>passphrase</code> is not right.
+   */
+  public void addIdentity(Identity identity, byte[] passphrase) throws JSchException {
+    if (passphrase != null) {
+      try {
+        byte[] goo = new byte[passphrase.length];
+        System.arraycopy(passphrase, 0, goo, 0, passphrase.length);
+        passphrase = goo;
+        identity.setPassphrase(passphrase);
+      } finally {
+        Util.bzero(passphrase);
+      }
+    }
+
+    if (identityRepository instanceof LocalIdentityRepository) {
+      ((LocalIdentityRepository) identityRepository).add(identity);
+    } else if (identity instanceof IdentityFile && !identity.isEncrypted()) {
+      identityRepository.add(((IdentityFile) identity).getKeyPair().forSSHAgent());
+    } else {
+      synchronized (this) {
+        if (!(identityRepository instanceof IdentityRepositoryWrapper)) {
+          setIdentityRepository(new IdentityRepositoryWrapper(identityRepository));
+        }
+      }
+      ((IdentityRepositoryWrapper) identityRepository).add(identity);
+    }
+  }
+
+  /**
+   * @deprecated use #removeIdentity(Identity identity)
+   */
+  @Deprecated
+  public void removeIdentity(String name) throws JSchException {
+    Vector<Identity> identities = identityRepository.getIdentities();
+    for (int i = 0; i < identities.size(); i++) {
+      Identity identity = identities.elementAt(i);
+      if (!identity.getName().equals(name))
+        continue;
+      if (identityRepository instanceof LocalIdentityRepository) {
+        ((LocalIdentityRepository) identityRepository).remove(identity);
+      } else
+        identityRepository.remove(identity.getPublicKeyBlob());
+    }
+  }
+
+  /**
+   * Removes the identity from identityRepository.
+   *
+   * @param identity the indentity to be removed.
+   * @throws JSchException if <code>identity</code> is invalid.
+   */
+  public void removeIdentity(Identity identity) throws JSchException {
+    identityRepository.remove(identity.getPublicKeyBlob());
+  }
+
+  /**
+   * Lists names of identities included in the identityRepository.
+   *
+   * @return names of identities
+   * @throws JSchException if identityReposory has problems.
+   */
+  public Vector<String> getIdentityNames() throws JSchException {
+    Vector<String> foo = new Vector<>();
+    Vector<Identity> identities = identityRepository.getIdentities();
+    for (int i = 0; i < identities.size(); i++) {
+      Identity identity = identities.elementAt(i);
+      foo.addElement(identity.getName());
+    }
+    return foo;
+  }
+
+  /**
+   * Removes all identities from identityRepository.
+   *
+   * @throws JSchException if identityReposory has problems.
+   */
+  public void removeAllIdentity() throws JSchException {
+    identityRepository.removeAll();
+  }
+
+  /**
+   * Returns the config value for the specified key.
+   *
+   * @param key key for the configuration.
+   * @return config value
+   */
+  public static String getConfig(String key) {
+    synchronized (config) {
+      if (key.equals("PubkeyAcceptedKeyTypes")) {
+        key = "PubkeyAcceptedAlgorithms";
+      }
+      return config.get(key);
+    }
+  }
+
+  /**
+   * Sets or Overrides the configuration.
+   *
+   * @param newconf configurations
+   */
+  public static void setConfig(Hashtable<String, String> newconf) {
+    synchronized (config) {
+      for (Enumeration<String> e = newconf.keys(); e.hasMoreElements();) {
+        String newkey = e.nextElement();
+        String key =
+            (newkey.equals("PubkeyAcceptedKeyTypes") ? "PubkeyAcceptedAlgorithms" : newkey);
+        config.put(key, newconf.get(newkey));
+      }
+    }
+  }
+
+  /**
+   * Sets or Overrides the configuration.
+   *
+   * @param key key for the configuration
+   * @param value value for the configuration
+   */
+  public static void setConfig(String key, String value) {
+    if (key.equals("PubkeyAcceptedKeyTypes")) {
+      config.put("PubkeyAcceptedAlgorithms", value);
+    } else {
+      config.put(key, value);
+    }
+  }
+
+  /**
+   * Sets the logger
+   *
+   * @param logger logger or <code>null</code> if no logging should take place
+   * @see Logger
+   */
+  public static void setLogger(Logger logger) {
+    if (logger == null)
+      logger = DEVNULL;
+    JSch.logger = logger;
+  }
+
+  /**
+   * Returns a logger to be used for this particular instance of JSch
+   *
+   * @return The logger that is used by this instance. If no particular logger has been set, the
+   *         statically set logger is returned.
+   */
+  public Logger getInstanceLogger() {
+    return instLogger.getLogger();
+  }
+
+  /**
+   * Sets a logger to be used for this particular instance of JSch
+   *
+   * @param logger The logger to be used or <code>null</code> if the statically set logger should be
+   *        used
+   */
+  public void setInstanceLogger(Logger logger) {
+    instLogger.setLogger(logger);
+  }
+
+  /**
+   * Returns the statically set logger, i.e. the logger being used by all JSch instances without
+   * explicitly set logger.
+   *
+   * @return The logger
+   */
+  public static Logger getLogger() {
+    return logger;
+  }
+
+  static class InstanceLogger {
+    private Logger logger;
+
+    private InstanceLogger() {}
+
+    Logger getLogger() {
+      if (logger == null) {
+        return JSch.logger;
+      }
+      return logger;
+    }
+
+    void setLogger(Logger logger) {
+      this.logger = logger;
+    }
+  }
+}

files-jsch/src/main/java/com/jcraft/jsch/JSchAlgoNegoFailException.java

@@ -0,0 +1,71 @@
+package com.jcraft.jsch;
+
+import java.util.Locale;
+
+/**
+ * Extension of {@link JSchException} to indicate when a connection fails during algorithm
+ * negotiation.
+ */
+public class JSchAlgoNegoFailException extends JSchException {
+
+  private static final long serialVersionUID = -1L;
+
+  private final String algorithmName;
+  private final String jschProposal;
+  private final String serverProposal;
+
+  JSchAlgoNegoFailException(int algorithmIndex, String jschProposal, String serverProposal) {
+    super(failString(algorithmIndex, jschProposal, serverProposal));
+    algorithmName = algorithmNameFromIndex(algorithmIndex);
+    this.jschProposal = jschProposal;
+    this.serverProposal = serverProposal;
+  }
+
+  /** Get the algorithm name. */
+  public String getAlgorithmName() {
+    return algorithmName;
+  }
+
+  /** Get the JSch algorithm proposal. */
+  public String getJSchProposal() {
+    return jschProposal;
+  }
+
+  /** Get the server algorithm proposal. */
+  public String getServerProposal() {
+    return serverProposal;
+  }
+
+  private static String failString(int algorithmIndex, String jschProposal, String serverProposal) {
+    return String.format(Locale.ROOT,
+        "Algorithm negotiation fail: algorithmName=\"%s\" jschProposal=\"%s\" serverProposal=\"%s\"",
+        algorithmNameFromIndex(algorithmIndex), jschProposal, serverProposal);
+  }
+
+  private static String algorithmNameFromIndex(int algorithmIndex) {
+    switch (algorithmIndex) {
+      case KeyExchange.PROPOSAL_KEX_ALGS:
+        return "kex";
+      case KeyExchange.PROPOSAL_SERVER_HOST_KEY_ALGS:
+        return "server_host_key";
+      case KeyExchange.PROPOSAL_ENC_ALGS_CTOS:
+        return "cipher.c2s";
+      case KeyExchange.PROPOSAL_ENC_ALGS_STOC:
+        return "cipher.s2c";
+      case KeyExchange.PROPOSAL_MAC_ALGS_CTOS:
+        return "mac.c2s";
+      case KeyExchange.PROPOSAL_MAC_ALGS_STOC:
+        return "mac.s2c";
+      case KeyExchange.PROPOSAL_COMP_ALGS_CTOS:
+        return "compression.c2s";
+      case KeyExchange.PROPOSAL_COMP_ALGS_STOC:
+        return "compression.s2c";
+      case KeyExchange.PROPOSAL_LANG_CTOS:
+        return "lang.c2s";
+      case KeyExchange.PROPOSAL_LANG_STOC:
+        return "lang.s2c";
+      default:
+        return "";
+    }
+  }
+}