论文部分内容阅读
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。
The non-repudiation of senders and addressees is an important security issue in email transmissions. This problem can be solved by using non-repudiation protocols in data transmission. At present, most non-repudiation agreements are based on trusted third parties, and they have high requirements on the security and communication capabilities of trusted third parties and are therefore hard to be applied in practice. A non-repudiation protocol based on secure third party is proposed, which is suitable for the specific application of e-mail transmission. At the same time, this protocol reduces the communication traffic and reduces the security requirements for trusted third parties. Then combined with secure multi-purpose mail extension technology, the e-mail transmission scheme based on this protocol is obtained.