支持透明离线TTP的多方非否认协议  

Multi-party non-repudiation protocol supporting transparent offline TTP

作　　者：李磊[1,2] 杨加喜[1] 王育民[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,西安710071 [2]郑州大学信息工程学院,郑州450052

出　　处：《吉林大学学报（工学版）》2009年第4期1099-1104,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(60473027)

摘　　要：针对电子商务中已提出的多方非否认协议不支持透明TTP,提出了一种新的协议,该协议的非否认证据不需使用TTP的签名,实现了对透明TTP的支持。协议由Exchange、Cancel和Finish三个子协议以及争议处理方案组成,在正常执行情况下,仅需3个消息交换步骤。对协议的分析表明,协议满足公平性、时限性和机密性。Non-repudiation protocols are essential for realization of electronic commerce. These protocols can be classified into two categories： two-party protocols and multi-party protocols. The existing multi-party non-repudiation protocols do not support transparent TTP. To overcome this problem, a multi-party non-repudiation protocol that supports transparent TTP was presented. Its non-repudiation evidences do not require the use of TTP signature. The protocol consists of a dispute resolution policy and three sub-protocols, i. e. , the exchange sub-protocol, the cancel sub-protocol and the finish sub-protocol. In normal case, the protocol was finished by exchanging three message flows. Technical analysis shows that the protocol satisfies fairness, timeliness and confidentiality.

关 键 词：通信技术 安全协议 非否认 多方协议 透明TTP 

分 类 号：TN918.1[电子电信—通信与信息系统]