[ https://issues.apache.org/jira/browse/SSHD-1277?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Thomas Wolf closed SSHD-1277. ----------------------------- Resolution: Not A Bug OK, closing. Out of interest: do you know what kind of SSH server this "PFaroeFTPServer" is using? And if OpenSSH, which version? > Error connecting to particular SFTP server after enabling HostKeyAlgorithms > rsa-sha2-256 rsa-sha2-512 on SFTP client > -------------------------------------------------------------------------------------------------------------------- > > Key: SSHD-1277 > URL: https://issues.apache.org/jira/browse/SSHD-1277 > Project: MINA SSHD > Issue Type: Bug > Affects Versions: 2.8.0 > Environment: java.runtime = Java(TM) SE Runtime Environment (8.0.6.10 > - pxa6480sr6fp10-20200408_01(SR6 FP10)) > os = Linux (3.10.0-1160.42.2.el7.x86_64; amd64) (en_US) > Reporter: Roberto Deandrea > Priority: Major > Attachments: trace_apachesshd_client.log > > > Hi Thomas, > I have a strange issue with an SFTP client connection based on Apache SSHD > 2.8.0 client. > After enabling the support for server HostKeyAlgorithms > rsa-sha2-256,rsa-sha2-512 with this code: > _SshClient sshClient = SshClient.setUpDefaultClient();_ > _sshClient.setSignatureFactories(Arrays.<NamedFactory<Signature>> asList( > BuiltinSignatures.rsa,_ > _BuiltinSignatures.rsaSHA256,_ > _BuiltinSignatures.rsaSHA512));_ > > the SFTP connection fails against a particular server with the following > stack trace : > [6/28/22 5:32:46:783 EDT] 00004102 id=00000000 > org.apache.sshd.common.util.logging.LoggingUtils W warn > exceptionCaught(ClientSessionImpl[StateStreetDS.sftpuser@/127.0.0.1:46323])[state=Opened] > SignatureException: Signature encoding error > java.security.SignatureException: Signature encoding error > at com.ibm.crypto.fips.provider.RSASignature.a(Unknown Source) > at com.ibm.crypto.fips.provider.RSASignature.engineVerify(Unknown > Source) > at java.security.Signature$Delegate.engineVerify(Signature.java:1231) > at java.security.Signature.verify(Signature.java:661) > at > org.apache.sshd.common.signature.AbstractSignature.doVerify(AbstractSignature.java:164) > at > org.apache.sshd.common.signature.SignatureRSA.verify(SignatureRSA.java:116) > at org.apache.sshd.client.kex.DHGClient.next(DHGClient.java:181) > at > org.apache.sshd.common.session.helpers.AbstractSession.handleKexMessage(AbstractSession.java:633) > at > org.apache.sshd.common.session.helpers.AbstractSession.doHandleMessage(AbstractSession.java:524) > at > org.apache.sshd.common.session.helpers.AbstractSession.handleMessage(AbstractSession.java:452) > at > org.apache.sshd.common.session.helpers.AbstractSession.decode(AbstractSession.java:1524) > at > org.apache.sshd.common.session.helpers.AbstractSession.messageReceived(AbstractSession.java:412) > at > org.apache.sshd.common.session.helpers.AbstractSessionIoHandler.messageReceived(AbstractSessionIoHandler.java:64) > at > org.apache.sshd.netty.NettyIoSession.channelRead(NettyIoSession.java:252) > at > org.apache.sshd.netty.NettyIoSession$Adapter.channelRead(NettyIoSession.java:296) > at > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) > at > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) > at > io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) > at > io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:271) > at > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) > at > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) > at > io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) > at > io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) > at > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) > at > io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) > at > io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) > at > io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) > at > io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719) > at > io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655) > at > io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581) > at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) > at > io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) > at > io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) > at > io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) > at java.lang.Thread.run(Thread.java:820) > Caused by: java.io.IOException: ObjectIdentifier mismatch: > 2.16.840.1.101.3.4.2.1 > at com.ibm.crypto.fips.provider.RSASignature.decodeSignature(Unknown > Source) > > +Before the above code change, the SFTP connection worked fine with that > particular SFTP server.+ > The file attached contains verbose traces of the failing SFTP client > connection. > Looking through Apache SSHD Jiras and mails I found this mail > (https://www.mail-archive.com/dev@mina.apache.org/msg33417.html) that shows > the same symptoms of my problem. The problem was reported in Apache SSHD > 2.2.0 and fixed in 2.4.0. > > Questions : > Do you think this is a bug inside Apache SSHD 2.8.0 code ? > How is possible that enabling rsa-sha2 host key algorithms on client could > give this issue with a ('before') working SFTP connection ? > Do you need other info for troubleshooting this issue ? > > Thanks in advance for your support > Kind Regards > Roberto D. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@mina.apache.org For additional commands, e-mail: dev-h...@mina.apache.org