我想用一个用putty（Win）制作的密钥从Maclogin到服务器。 输出，其中一些如下所示，看起来像它正在尝试，但我没有密码，所以我只是打进入，当dialo框出现，所以我不知道如何让它接受一个空白的密码。 我知道它在我的Win机器上工作，没有密码或密码。
debug1: Authentications that can continue: publickey debug3: start over, passed a different list publickey debug3: preferred publickey,keyboard-interactive,password debug3: authmethod_lookup publickey debug3: remaining preferred: keyboard-interactive,password debug3: authmethod_is_enabled publickey debug1: Next authentication method: publickey debug1: Trying private key: /Users/michael/.ssh/b.ppk debug1: PEM_read_PrivateKey failed debug1: read PEM private key done: type <unknown> debug1: PEM_read_PrivateKey failed debug1: read PEM private key done: type <unknown> debug2: bad passphrase given, try again... debug1: PEM_read_PrivateKey failed debug1: read PEM private key done: type <unknown> debug2: bad passphrase given, try again... debug2: no passphrase given, try next key debug2: we did not send a packet, disable method debug1: No more authentication methods to try. Permission denied (publickey). 您需要将您的Putty私钥（.ppk）转换成类似于标准SSH密钥的东西 – puttygen可以为您做这个（参考此链接 ，或向Google询问puttygen …）
从堆栈溢出这篇文章给出了一个关于使用OSXterminal将您的PEM密钥转换为PPK的答案：
sudo port install putty puttygen privatekey.ppk -O private-openssh -o privatekey.pem