Using asymmetric encryption with public/private key pairs for signing and encrypting messages is simple (at least conceptually!).

使用不对称加密和 public/private 密钥对进行消息的签名和加密是很简单的（至少概念上很简单）。

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Encrypting the message with the public key of the receiver's X.509 certificate to ensure that only they can access the message content.

使用接收方的X . 509证书的公钥来加密消息，以便确保只有它们才能访问消息内容。

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For example, encrypting data with the private key creates, a file that can be decrypted by anyone with the public key but that could only have been made by the private key holder.

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