一种双方不可否认的密码协议及应用

Undeniable Cryptographic Protocol for Both Sender and Receiver and Its Applications

在数据通信中 ,数字签名技术保证了数据发送不可否认性和数据完整性 ,而接收数据的不可否认性在安全通信中也是极为重要的 .近年来 ,实现这类型的密码协议主要是通过可信第三方参与数据的加密与传送 ,因而可信第三方的可靠性和安全性是系统性能的瓶颈 .文中提出了一个双方不可否认的密码协议 ,这个协议解决了可信第三方的性能瓶颈问题 ,是一个更有效率的密码协议 ,最后探讨了它在电子邮件中的应用 .

In data communications, digital signature schemes are used to ensure non-repudiation of sending data and the integrality of data, and non-repudiation of receiving data is also very important in the secret communication. In the past years, this kind of cryptographic protocols was mainly implemented by the intervention of the trusted third party in transmission and encryption of data, thus the dependability and security of the trusted third party was a bottleneck in these secure systems. To solve this problem, an undeniable cryptographic protocol for both sender and receiver is proposed, which is more efficient. Finally, its applications in electric mail are discussed.