如果您不提供密码短语，那么ssh - keygen会生成一个未加密的密钥。
If you don't supply a passphrase, then ssh-keygen will generate keys which are not encrypted!
正常情况下，正如前面提到的，机密密钥受密码短语的保护。
Normally, and as mentioned, secret keys are protected by a passphrase.
它允许ssh程序请求已解密密钥，而不是每次需要时都要求您提供私钥的密码短语。
This allows the SSH program to request an already decrypted key, rather than asking you for the private key's secret passphrase each time it's required.
它允许ssh程序请求已解密密钥，而不是每次需要时都要求您提供私钥的密码短语。
This allows the SSH program to request an already decrypted key, rather than asking you for the private key's secret passphrase each time it's required.
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