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https://issues.apache.org/jira/browse/SSHD-945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16945387#comment-16945387
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Lyor Goldstein commented on SSHD-945:
-------------------------------------
I figured this might be the problem but just wanted to make sure. Seems that
the solution would be to implement the same "wrong" signature using SHA1 on
2048 bit keys even though it is not recommended by the security community.
> DSA 2048 public key authentication fails
> ----------------------------------------
>
> Key: SSHD-945
> URL: https://issues.apache.org/jira/browse/SSHD-945
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 2.1.0
> Reporter: Logan
> Priority: Major
> Attachments: DSAKeyTests.java, maverick_id_dsa
>
>
> While RSA 1024, 2048 and DSA 1024 keys succeed, DSA 2048 fails with error
> trace listed below. I am trying to figure out if the issue is related to DSA
> keys generated by JDK or apache SSHD. Attached is the test case.
>
> Tests with JSch API also fail with DSA 2048 keys.
>
> Error trace:
> {code:java}
> org.apache.sshd.common.SshException: No more authentication methods
> availableorg.apache.sshd.common.SshException: No more authentication methods
> available at
> org.apache.sshd.client.session.ClientUserAuthService.tryNext(ClientUserAuthService.java:318)
> at
> org.apache.sshd.client.session.ClientUserAuthService.processUserAuth(ClientUserAuthService.java:254)
> at
> org.apache.sshd.client.session.ClientUserAuthService.process(ClientUserAuthService.java:201)
> at
> org.apache.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:626)
> at
> org.apache.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:559)
> at
> org.apache.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1542)
> at
> org.apache.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:520)
> at
> org.apache.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:63)
> at
> org.apache.sshd.common.io.nio2.Nio2Session.handleReadCycleCompletion(Nio2Session.java:339)
> at
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:318)
> at
> org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:315)
> at
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.lambda$completed$0(Nio2CompletionHandler.java:38)
> at java.security.AccessController.doPrivileged(Native Method) at
> org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:37)
> at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) at
> sun.nio.ch.Invoker$2.run(Invoker.java:218) at
> sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748){code}
> [^DSAKeyTests.java]
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