ncubede opened a new issue, #517:
URL: https://github.com/apache/mina-sshd/issues/517
### Version
2.12.1
### Bug description
If a BouncyCastleGeneratorHostKeyProvider is set in
SshServer.setKeyPairProvider, the generated EC host key cannot be read by
Mina's ECDSA PEM reader and a new key is re-generated for every start.
Registering BouncyCastleKeyPairResourceParser with SecurityUtils addresses the
issue.
SecurityUtils.setKeyPairResourceParser(BouncyCastleKeyPairResourceParser.INSTANCE);
I would propose to either document this clearly in JavaDoc or have a hook in
KeyPairProvider to register the KeyPairResourceParser it requires. It took an
annoying amount of time to find.
I have seen people asking about the same issue, but have to found a concise
answer, so I had to trace this with the .java documentation.
### Actual behavior
14:40:12.598 [main] WARN
org.apache.sshd.common.util.security.bouncycastle.BouncyCastleGeneratorHostKeyProvider
--
resolveKeyPair(/var/folders/b0/29tsx3jx6vv_fkbw9rsqyy6w0000gn/T/key5380748753361494714pem)
Failed (StreamCorruptedException) to load: Invalid DER: object is not an OID:
SEQUENCE
java.io.StreamCorruptedException: Invalid DER: object is not an OID: SEQUENCE
at
org.apache.sshd.common.util.io.der.ASN1Object.asOID(ASN1Object.java:233)
at
org.apache.sshd.common.config.keys.loader.pem.ECDSAPEMResourceKeyPairParser.parseCurveParameter(ECDSAPEMResourceKeyPairParser.java:267)
at
org.apache.sshd.common.config.keys.loader.pem.ECDSAPEMResourceKeyPairParser.parseCurveParameter(ECDSAPEMResourceKeyPairParser.java:238)
at
org.apache.sshd.common.config.keys.loader.pem.ECDSAPEMResourceKeyPairParser.decodeECPrivateKeySpec(ECDSAPEMResourceKeyPairParser.java:220)
at
org.apache.sshd.common.config.keys.loader.pem.ECDSAPEMResourceKeyPairParser.decodeECPrivateKeySpec(ECDSAPEMResourceKeyPairParser.java:163)
### Expected behavior
A cached host key pair should be readable after being written. If a key
pair provider needs a specific key pair parser, ensure that both are set in
concert or clearly document.
### Relevant log output
_No response_
### Other information
I tested 2.9.3, 2.10.0, 2.11.0, 2.12.0, 2.12.1, the issue was in ll of them.
I suspect, that bouncycastle 1.78.1 has a PEM EC file format change for named
curves in the last security fixes.
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