一种新的基于HECC的多方公平交换协议

摘要

A new multi-party fair exchange protocol based on HECC is proposed in order to improve the security and efficiency of multi-party fair exchange protocol.The protocol efficiency is improved by applying identity signature scheme based on the hyperelliptic curve bilinear pairings and the security in transaction process is ensured by means of HECC threshold secret sharing technology.Finally,after analyzing the new multi-party fair exchange protocol by the improved Kailar logic formal,the results show that the fairness,collusion-resistance and accountability are satisfied in the new multi-party fair exchange protocol.%为了提高多方公平交换协议的安全性和运行效率,提出一种新的基于HECC的多方公平交换协议.利用基于超椭圆曲线双线性对的身份签名方案,提高了协议的运行效率;通过HECC的门限秘密共享技术确保了交易过程中的安全性.最后用改进的Kailar逻辑对新的多方公平交换协议进行形式化分析,结果表明新的多方公平交换协议不仅满足公平性、抗合谋性等,而且具有可追究性.