I am running kie-wb 6.5 on centos 7 with java version 1.8.0_111".
[org.apache.sshd.server.session.ServerSession] (sshd-SshServer[36dcd1db]-nio2-thread-3) Exception caught: java.security.InvalidKeyException: The security strength of SHA-1 digest algorithm is not sufficient for this key size
at sun.security.provider.DSA.checkKey(DSA.java:104)
at sun.security.provider.DSA.engineInitSign(DSA.java:136)
at java.security.Signature$Delegate.engineInitSign(Signature.java:1174)
at java.security.Signature.initSign(Signature.java:527)
at org.apache.sshd.common.signature.AbstractSignature.init(AbstractSignature.java:47)
at org.apache.sshd.server.kex.AbstractDHGServer.next(AbstractDHGServer.java:91)
at org.apache.sshd.common.session.AbstractSession.doHandleMessage(AbstractSession.java:393)
at org.apache.sshd.common.session.AbstractSession.handleMessage(AbstractSession.java:295)
at org.apache.sshd.common.session.AbstractSession.decode(AbstractSession.java:731)
at org.apache.sshd.common.session.AbstractSession.messageReceived(AbstractSession.java:277)
at org.apache.sshd.common.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:54)
at org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:187)
at org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:173)
at org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)
at sun.nio.ch.Invoker.invokeDirect(Invoker.java:157)
at sun.nio.ch.UnixAsynchronousSocketChannelImpl.implRead(UnixAsynchronousSocketChannelImpl.java:553)
at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:276)
at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:297)
at java.nio.channels.AsynchronousSocketChannel.read(AsynchronousSocketChannel.java:420)
at org.apache.sshd.common.io.nio2.Nio2Session.startReading(Nio2Session.java:173)
at org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:189)
at org.apache.sshd.common.io.nio2.Nio2Session$1.onCompleted(Nio2Session.java:173)
at org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)
at sun.nio.ch.Invoker.invokeDirect(Invoker.java:157)
at sun.nio.ch.UnixAsynchronousSocketChannelImpl.implRead(UnixAsynchronousSocketChannelImpl.java:553)
at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:276)
at sun.nio.ch.AsynchronousSocketChannelImpl.read(AsynchronousSocketChannelImpl.java:297)
at java.nio.channels.AsynchronousSocketChannel.read(AsynchronousSocketChannel.java:420)
at org.apache.sshd.common.io.nio2.Nio2Session.startReading(Nio2Session.java:173)
at org.apache.sshd.common.io.nio2.Nio2Acceptor$AcceptCompletionHandler.onCompleted(Nio2Acceptor.java:129)
at org.apache.sshd.common.io.nio2.Nio2Acceptor$AcceptCompletionHandler.onCompleted(Nio2Acceptor.java:108)
at org.apache.sshd.common.io.nio2.Nio2CompletionHandler$1.run(Nio2CompletionHandler.java:32)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.sshd.common.io.nio2.Nio2CompletionHandler.completed(Nio2CompletionHandler.java:30)
at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126)
at sun.nio.ch.Invoker$2.run(Invoker.java:218)
at sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)