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add bit if X is odd in ed25519 public key writing

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This commit is contained in:
Jörg Prante 2024-05-29 13:19:34 +02:00
parent bac77bbd0f
commit 4c66383a05
3 changed files with 15 additions and 4 deletions
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2
files-sftp-fs/src/test/java/org/apache/sshd/fs/test/SftpWithPrivateKeyReaderTest.java
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@ -24,7 +24,7 @@ public class SftpWithPrivateKeyReaderTest {
public void testXbib() throws Exception {
Map<String, String> env = new HashMap<>();
env.put("username", "joerg");
URI uri = URI.create("sftp://xbib.org");
URI uri = URI.create("sftp://alkmene");
try (SshClient sshClient = ClientBuilder.builder()
.build()) {
sshClient.setNioWorkers(1);

8
files-sftp/src/main/java/org/apache/sshd/common/util/ArrayUtil.java
View file

@ -5,6 +5,14 @@ public class ArrayUtil {
private ArrayUtil() {
}
public static String toHex(byte[] data) {
StringBuilder sb = new StringBuilder();
for (byte b : data) {
sb.append(Character.forDigit((b & 240) >> 4, 16)).append(Character.forDigit((b & 15), 16));
}
return sb.toString();
}
public static void reverse(byte[] arr) {
int i = 0;
int j = arr.length - 1;

9
files-sftp/src/main/java/org/apache/sshd/common/util/buffer/Buffer.java
View file

@ -919,9 +919,12 @@ public abstract class Buffer implements Readable {
putBytes(cert.getSignature());
}
case EdECPublicKey edECPublicKey -> {
byte[] b = edECPublicKey.getPoint().getY().toByteArray();
ArrayUtil.reverse(b);
putBytes(b);
byte[] arr = edECPublicKey.getPoint().getY().toByteArray();
ArrayUtil.reverse(arr);
if (edECPublicKey.getPoint().isXOdd()) {
arr[arr.length - 1] |= (byte) 0x80;
}
putBytes(arr);
}
default -> throw new BufferException("Unsupported raw public key algorithm: " + key.getAlgorithm());
}