JSchException:算法协商失败
JSchException:算法协商失败
提问于 2011-06-07 18:02:06
我尝试使用JSch (0.1.44-1)通过ssh连接到远程sftp服务器，但在session.connect();期间我收到以下异常：
com.jcraft.jsch.JSchException: Algorithm negotiation fail at
com.jcraft.jsch.Session.receive_kexinit(Session.java:529) at
com.jcraft.jsch.Session.connect(Session.java:291) at com.jcraft.jsch.Session.connect(Session.java:154)
... 来自JSch的日志：
INFO: Connecting to xx.xx.xx.xxport 22
INFO: Connection established
INFO: Remote version string: SSH-2.0-WeOnlyDo 2.0.6
INFO: Local version string: SSH-2.0-JSCH-0.1.44
INFO: CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
INFO: aes256-ctr is not available.
INFO: aes192-ctr is not available.
INFO: aes256-cbc is not available.
INFO: aes192-cbc is not available.
INFO: arcfour256 is not available.
INFO: SSH_MSG_KEXINIT sent
INFO: SSH_MSG_KEXINIT received
INFO: Disconnecting from xx.xx.xx.xx port 22 我可以使用linux sftp命令登录到远程服务器。我试图在互联网上找到任何线索，但我失败了。
linux sftp命令的调试输出：
OpenSSH_5.5p1-DAM_1.2, OpenSSL 0.9.8r 8 Feb 201
debug1: Reading configuration data /etc/DAM/ssh/ssh_config
debug1: Applying options for *
debug1: Applying options for *.*
debug1: Connecting to xx.xx.xx.xx [xx.xx.xx.xx] port 22.
debug1: Connection established.
debug1: identity file /**/spv_id_rsa.key type -1
debug1: identity file /**/spv_id_rsa.key-cert type -1
debug1: Remote protocol version 2.0, remote software version WeOnlyDo 2.0.6
debug1: no match: WeOnlyDo 2.0.6
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.5p1-DAM_1.2
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes256-cbc hmac-md5 none
debug1: kex: client->server aes256-cbc hmac-md5 none
debug1: sending SSH2_MSG_KEXDH_INIT
debug1: expecting SSH2_MSG_KEXDH_REPLY
debug1: Host 'xx.xx.xx.xx' is known and matches the RSA host key.
debug1: Found key in ~/.ssh/known_hosts:8
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: Roaming not allowed by server
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /**/spv_id_rsa.key
debug1: read PEM private key done: type RSA
debug1: Authentication succeeded (publickey).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: Sending subsystem: sftp
Connected to xx.xx.xx.xx.
sftp>回答 8
Stack Overflow用户
发布于 2016-12-21 06:23:50
将算法添加到接收服务器(您要连接的服务器)的完整步骤。我假设这是一台Linux服务器。
sudo /etc/ssh/sshd_config将这段代码添加到文件中(可以在末尾)：
KexAlgorithms curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1然后重新启动SSH服务器：
sudo service sshd restartStack Overflow用户
发布于 2015-05-10 19:03:26
顺便说一句，我在JSch 0.1.50下也有同样的错误信息。升级到0.1.52解决了这个问题。
Stack Overflow用户
发布于 2017-03-24 23:24:23
确保您使用的是最新版本的JSch。在使用JSch 0.1.31并尝试连接到RedHat 5服务器时，我遇到了完全相同的问题。更新到最新版本解决了此问题。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/6263630
复制相关文章
相似问题