The recipient of the payload can validate the digital signature using the public key of the sender.
有效载荷的接收者可以使用发送者的公开密钥验证数字签名。
2
The sender USES the recipient's public key (available via published digital certificates) to encrypt the message. The recipient then USES his private key to decrypt the message.
发送方使用接收方的公开密钥(可以通过公开的数字证书得到)加密消息，然后接收方使用私钥解密消息。
3
The sender of the message USES the public key of the receiver to encrypt the message to be sent.