该密钥将发件人的“纯文本”信息加密，然后在接收方进行解密，使他们可以读取或收听信息。

The key converts a sender's "plain-text" messages into encrypted form, then decrypts them at the receiver's end so the messages can be read or heard.

youdao

该密钥将发件人的“纯文本”信息加密，然后在接收方进行解密，使他们可以读取或收听信息。

The key converts a sender's "plain-text" messages into encrypted form, then decrypts them at the receiver's end so the messages can be read or heard.

youdao