最后是强身份验证，其中使用两种或者更多的方法对一个标识进行验证，如密码和加密密钥。
Finally, there is strong authentication in which an identity is verified using two or more methods, such as a password and a cryptographic key.
Semisecure Login : 这个插件使用公钥对密码进行加密，来增强登录过程的安全性。
Semisecure Login : This plugin increases the security of login process by using a public key to encrypt the password on client side.
ssh及其变种提供了更强的身份验证机制，并使用您所选择的几个密码对所有的通信内容进行加密。
SSH and its variants provide stronger authentication mechanisms and encrypt all traffic using your choice of several ciphers.
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