一种基于非否认协议的电子邮件传输方案

在电子邮件传输中,发信人和收信人的不可否认性是一个重要的安全问题。该问题可以通过采用数据传输中的非否认协议来解决。目前多数非否认协议基于可信第三方,并且对可信第三方的安全性、通信能力要求很高,因而难以在实际中应用。提出了一种基于安全第三方的非否认协议,该协议适合于电子邮件传输的特定应用;同时该协议减少了通信流量,降低了对可信第三方的安全性要求。随后结合安全多用途邮件扩展技术,得出了基于该协议的电子邮件传输实现方案。

A Non- repudiation Protocol Based E -mail Transmission Scheme

Non - repudiation of both addresser and recipient is essential in e - mail transmission,which can be resolved by adopting non - repudiation protocols in data transmission. At present most of those protocols are based on the trusted third party, and also demand too much on the security and communication capacity of the trusted third party, which prevent those protocols from being realized. In this paper a non - repudiation protocol is presented, based on trusted third party, requiring little on the security and communication capacity of the trusted third party, much easier to be realized in e - mail transmission. Based on that protocol, a non - repudiation e - mail transmission scheme is presented, adopting S/MIME.