共计 1360 个字符，预计需要花费 4 分钟才能阅读完成。
环境：macOS Mojava version 10.14
在更新了 Mac OS 当前用 ssh push 代码到服务器呈现了上面这个谬误。
ssh error: unable to negotiate with IP: no matching cipher found.Their offer: aes256-cbc,aes192-cbc,aes128-cbc…
Unable to negotiate with XX.X.X.XXX port XX: no matching cipher found. Their offer: aes256-cbc,aes192-cbc,aes128-cbc
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
呈现谬误的起因是要连贯的代码仓库服务端的 ssh 版本过低，客户端与服务端的 cipher 没有匹配上，咱们须要在本人的客户端（降级 OS 后的 Mac）从新启用老的 cipher , 这样就能从新建设起连贯了。
具体步骤如下：
第一步：terminal 输出 sudo nano /etc/ssh/ssh_config
atcs-air:~ XXX$ sudo nano /etc/ssh/ssh_config
第二步：找到 Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc，删除这行后面的 #号。
# Host *
# ForwardAgent no
# ForwardX11 no
# PasswordAuthentication yes
# HostbasedAuthentication no
# GSSAPIAuthentication no
# GSSAPIDelegateCredentials no
# BatchMode no
# CheckHostIP yes
# AddressFamily any
# ConnectTimeout 0
# StrictHostKeyChecking ask
# IdentityFile ~/.ssh/id_rsa
# IdentityFile ~/.ssh/id_dsa
# IdentityFile ~/.ssh/id_ecdsa
# IdentityFile ~/.ssh/id_ed25519
# Port 22
# Protocol 2
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
# MACs hmac-md5,hmac-sha1,umac-64@openssh.com
# EscapeChar ~
# Tunnel no
# TunnelDevice any:any
# PermitLocalCommand no
# VisualHostKey no
# ProxyCommand ssh -q -W %h:%p gateway.example.com
# RekeyLimit 1G 1h
Host *
SendEnv LANG LC_*第三步：保留 ssh_config 这个文件，退出。而后就能够和以前一样通过 ssh 连贯代码仓库服务器了。
参考链接：
https://www.itechlounge.net/2…
https://discussions.apple.com…
正文完