【摘要】 在收、发双方互不信任的保密通信系统中,密码技术不但要解决发方对数据的签字问题,还必须防止收方拒绝承认收到有效信息数据。本文提出了接收签字的概念,同时给出了一种具体实现接收签字的密码协议,并对其安全性进行了讨论。新协议引用了公证处作为签字可靠性的保证。更多还原

【Abstract】 When the sender and receiver of a secure communication system are not trust on each other, the cryptography has not only to solve the message signature problem of sender, but also to prevent the receiver from refusing having been some valuable information served. First, the paper proposes the idea of received signature. Then, a practical realization of received signature protocol is given. Also, the security of the protocol is analysed. Anyhow, the new protocol uses the trusted third party to ensure the security of the signature.更多还原