类：EncapsulatedKey

¥Class: EncapsulatedKey

用于消息加密的临时对称密钥（表示为 <CryptoKey>）以及由此共享密钥加密的密文（可随消息传输给消息接收者）。接收者使用其私钥来确定共享密钥，然后共享密钥便可用于解密消息。

¥A temporary symmetric secret key (represented as <CryptoKey>) for message encryption and the ciphertext (that can be transmitted to the message recipient along with the message) encrypted by this shared key. The recipient uses their private key to determine what the shared key is which then allows them to decrypt the message.