vorburger opened a new issue, #747:
URL: https://github.com/apache/mina-sshd/issues/747
### Version
2.15.0
### Bug description
On Java 21:
```java
public class HostKeyPairProvider implements KeyPairProvider {
@Override
public Iterable<KeyPair> loadKeys(SessionContext session)
throws IOException, GeneralSecurityException {
return singleton(generateNewKeyPair());
}
private KeyPair generateNewKeyPair() throws NoSuchAlgorithmException {
var keyPairGenerator = KeyPairGenerator.getInstance("Ed25519");
return keyPairGenerator.generateKeyPair();
}
}
// ...
server.setKeyPairProvider(new HostKeyPairProvider());
```
On connection, this causes:
`[sshd-SshServer[48075da3](port=2222)-nio2-thread-1] WARN
org.apache.sshd.server.session.ServerSessionImpl -
exceptionCaught(ServerSessionImpl[null@/[0:0:0:0:0:0:0:1]:43592])[state=Opened]
IllegalArgumentException: Not an EDDSA public key: algorithm = Ed25519,
unparsed keybits = `
How do you use an `Ed25519` host key with mina-sshd? (Instead of e.g. `RSA`,
with which it works for me.)
### Actual behavior
Error.
### Expected behavior
No Error.
### Relevant log output
```Shell
```
### Other information
_No response_
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