diff --git a/gradle/test/junit5.gradle b/gradle/test/junit5.gradle
index 395214d..2b98eff 100644
--- a/gradle/test/junit5.gradle
+++ b/gradle/test/junit5.gradle
@@ -22,6 +22,7 @@ test {
     environment 'NOTIFY_SOCKET', '/run/systemd/notify'
     testLogging {
         events 'STARTED', 'PASSED', 'FAILED', 'SKIPPED'
+        showStandardStreams = true
     }
     afterSuite { desc, result ->
         if (!desc.parent) {
diff --git a/net-security/src/test/java/org/xbib/net/security/test/PrivateKeyReaderTest.java b/net-security/src/test/java/org/xbib/net/security/test/PrivateKeyReaderTest.java
index 272f582..0b56a07 100644
--- a/net-security/src/test/java/org/xbib/net/security/test/PrivateKeyReaderTest.java
+++ b/net-security/src/test/java/org/xbib/net/security/test/PrivateKeyReaderTest.java
@@ -9,9 +9,13 @@ import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 import java.nio.charset.StandardCharsets;
 import java.security.PrivateKey;
+import java.security.Signature;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class PrivateKeyReaderTest {
 
@@ -27,6 +31,7 @@ public class PrivateKeyReaderTest {
             PublicKey publicKey = keyPair.getPublic();
             assertNotNull(publicKey);
             assertEquals("DSA", publicKey.getAlgorithm());
+            match("SHA1withDSA", privateKey, publicKey);
         }
     }
 
@@ -42,6 +47,7 @@ public class PrivateKeyReaderTest {
             PublicKey publicKey = keyPair.getPublic();
             assertNotNull(publicKey);
             assertEquals("RSA", publicKey.getAlgorithm());
+            match("SHA256withRSA", privateKey, publicKey);
         }
     }
 
@@ -57,6 +63,7 @@ public class PrivateKeyReaderTest {
             PublicKey publicKey = keyPair.getPublic();
             assertNotNull(publicKey);
             assertEquals("EC", publicKey.getAlgorithm());
+            match("SHA256withECDSA", privateKey, publicKey);
         }
     }
 
@@ -72,6 +79,7 @@ public class PrivateKeyReaderTest {
             PublicKey publicKey = keyPair.getPublic();
             assertNotNull(publicKey);
             assertEquals("EdDSA", publicKey.getAlgorithm());
+            match("Ed25519", privateKey, publicKey);
         }
     }
 
@@ -120,4 +128,22 @@ public class PrivateKeyReaderTest {
             assertEquals("PKCS#8", privateKey.getFormat());
         }
     }
+
+    private static void match(String algo,
+                       PrivateKey privateKey,
+                       PublicKey publicKey) throws Exception {
+        String message = "Hello World";
+        Signature signature = Signature.getInstance(algo);
+        signature.initSign(privateKey);
+        signature.update(message.getBytes(StandardCharsets.UTF_8));
+        byte[] payload = signature.sign();
+
+        signature.initVerify(publicKey);
+        signature.update(message.getBytes(StandardCharsets.UTF_8));
+        assertTrue(signature.verify(payload));
+        logger.log(Level.INFO, "verified " + algo);
+
+    }
+
+    private static final Logger logger = Logger.getLogger(PrivateKeyReaderTest.class.getName());
 }