公平的消息传输协议

Fair protocols for message transfer

公平性是电子交易走向实际应用所必须解决的课题。提出了一个在电子商务环境下消息传输协议,目的是为了保证在消息传输协议终止后,双方都能收到对方消息或都收不到。该协议基于乐观模型,使用了可转化签名和非交互式零知识证明等技术。协议在实现有效性、公平性和不可抵赖性要求的基础上,还实现了透明的可信第3方,且生成的最终抗抵赖证据是标准的GDH签名(gap diffie-hellman signature),这使得该协议既高效,又非常容易融入现有交易系统。

Fairness is the vitally necessary for application of electronic transaction. A fair protocol is presented for message transfer in electronic commerce. The protocol is designed to assure when the protocol ends, both parties get the expected messages or nothing. The protocol, based on optimistic approach, uses convertible signature scheme and non-interactive zero-knowledge proof to achieve efficient transparent TTE Also, the protocol generates standard GDH （gap diffie-hellman） signatures as the final non-repudiation evidences. All these efforts make the protocol efficient and easy to be fitted in existing systems.