bash Openssh 私钥转 RSA 私钥
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Openssh Private Key to RSA Private Key
提问by Eleanor
(I am using MAC)
（我正在使用MAC）
My id_rsa starts with
我的 id_rsa 以
-----BEGIN OPENSSH PRIVATE KEY-----
but I expect it to starts with
但我希望它以
-----BEGIN RSA PRIVATE KEY-----
I have send my id_rsa.pub to server administrator to get the access to server, so I don't want to generate a new key.
我已将我的 id_rsa.pub 发送给服务器管理员以获取对服务器的访问权限，因此我不想生成新密钥。
Is there any way that I can transfer my id_rsa which is a openssh private key to a RSA private key? (command please.)
If I can transfer, do I also need to transfer id_rsa.pub? (command please.) It seems id_rsa.pub doesn't have a header like id_rsa, so I am not sure if I should also transfer this.
有什么方法可以将我的 id_rsa（它是 openssh 私钥）转移到 RSA 私钥？（请命令。）
如果可以转让，是否还需要转让id_rsa.pub？（请命令。）似乎 id_rsa.pub 没有像 id_rsa 这样的标题，所以我不确定我是否也应该传输它。
Thank you!
谢谢！
回答by Tad M.
You have an OpenSSH format key and want a PEM format key. It is not intuitive to me, but the suggested way to convert is by changing the password for the key and writing it in a different format at the same time. The command looks like this:
您有一个 OpenSSH 格式的密钥并且想要一个 PEM 格式的密钥。这对我来说并不直观，但建议的转换方法是更改密钥的密码并同时以不同的格式写入。该命令如下所示：
ssh-keygen -p -N "" -m pem -f /path/to/key
ssh-keygen -p -N "" -m pem -f /path/to/key
It will change the file in place, so make a backup of your current key just in case. -N ""will set the passphrase as none. I haven't tested this with a passphrase.
它将就地更改文件，因此请备份您当前的密钥以防万一。-N ""将密码设置为无。我没有用密码测试过这个。
The public key should be fine as is.
公钥应该没问题。
For the full explanation of the above command, see the -m option here: https://man.openbsd.org/ssh-keygen#m
有关上述命令的完整说明，请参阅此处的 -m 选项：https: //man.openbsd.org/ssh-keygen#m
