这个想法是，一个人作为一个“发送者”将试图把图像发送给在密封房间里放松的“接收者”。
The idea was that a person acting as a 'sender' would attempt to beam the image over to the 'receiver' relaxing in the sealed room.
这种方式实现了消息发送者和接收者的解耦。
This approach decouples the sender and the receiver of the message.
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。
The recipient of the payload can validate the digital signature using the public key of the sender.
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