With this pair, you can not only encrypt a message, but also create a certificate.
有了这个密钥对，我们不仅能够对某个消息进行加密还能够为它创建一个证书。
For example, the security logger can encrypt a message before it is written to the destination.
例如，安全性日志记录程序可以在将日志写入目的地之前对消息进行加密。
When you connect to a server, the server can encrypt a message with the public key stored in the authorized_keys file.
当您连接到服务器时，服务器能够使用authorized_keys文件中存储的公共密匙加密一条消息。
When your public key is used to encrypt a message, only you (as the holder of the private key) can decrypt that message.
当使用您的公开密匙对消息进行加密，那么只有您(即私有密匙的持有者)才能够解密消息。
To encrypt a message, the sender, known conventionally as Alice, scrambles it using a secret key before sending it to the receiver, Bob.
为了给一条信息加密，发送者，按大家熟知的惯例是Alice，在将信息发送至接受者Bob前，用一个密钥来把信息打乱。
One disadvantage of asymmetric keys is that they take much longer to encrypt a message than do symmetric keys, and the encryption time is directly proportional to the size of the message.
非对称密钥的一个缺点是加密消息要比对称密钥花费更长的时间，而且加密时间直接与消息的长短成正比。
Now, if you have some message, you just need to interpret its bytes as a number "M." If you want to "encrypt" a message to create a "ciphertext", you'd calculate
现在，如果你有一些消息，那么你只需要将该消息的字节翻译成一个数“M”，若要对这个消息进行“加密”形成“密文”的话，你就这么计算
Now, if you have some message, you just need to interpret its bytes as a number "M." If you want to "encrypt" a message to create a "ciphertext", you'd calculate
现在，如果你有一些消息，那么你只需要将该消息的字节翻译成一个数“M”，若要对这个消息进行“加密”形成“密文”的话，你就这么计算
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