Putty使用公钥认证时,按照常规方法设置,一直报错:Disconnected: No supported authentication methods available (server sent:public key)。

如截图:

找了半天没找到问题出在哪里,sshd的设置一切正常。这个做过多次居然也能错????

最后发现原来是 ~/.ssh/authorized_keys 文件的内容有问题,putty生成的pub文件的格式如下:


---- BEGIN SSH2 PUBLIC KEY ----
Comment: "rsa-key"
AAAAB3NzaC1yc2EAAAABJQAAAQEAvifBFJzxK0PGJVNV9ZdDGOYWvytwnFDKoaZv
Djdt7rEK+zeFzR6eU7ERhOjMPb7GfoFU/1JPwXqSN2p57T4xdtR/Qi9/XAhmQ9SY
XnfA1yNOhHXoQuoCEjOmIbOo+NmZCoKPeBob7fXV8Ar7MmJ0vUpZ+79Usm9lsvQF
zEfI/Q1NuaVoOb7s6CFyj9WcmX7Yzc3cXpIHeFzLfLTFFROohw==
---- END SSH2 PUBLIC KEY ----

而原来设置的都是在一行的格式,所以openssh不支持putty生成的此格式,需要把这些合并成一行即可:

ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAvifBFJzxK0PGJVNV9ZdDGOYWvytwnFDKoaZvDjdt7rEK+zeFzR6eU7ERhOjMPb7GfoFU/1JPwXqSN2p57T4xdtR/Qi9/XAhmQ9SYXnfA1yNOhHXoQuoCEjOmIbOo+NmZCoKPeBob7fXV8Ar7MmJ0vUpZ+79Usm9lsvQFzEfI/1NuaVoOb7s6CFyj9WcmX7Yzc3cXpIHeFzLfLTFFROohw== rsa-key

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