密钥链多方非否认协议  

Multi-party Non-repudiation Protocol Using Key Chains

作　　者：李磊[1,2] 谭新莲[2] 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450001

出　　处：《计算机科学》2009年第10期89-90,97,共3页Computer Science

基　　金：国家自然科学基金(60473027)资助

摘　　要：多方非否认协议通常仅考虑一轮消息交换的情况,很少讨论相同参与方进行多轮消息交换的情况。基于后者对多方非否认协议进行优化,提出了一种利用密钥链实现的多方非否认协议,以有效减轻TTP存储负担。协议由Initialization,Exchange,Abort和Recovery4个子协议以及争议处理方案组成。分析表明,协议满足公平性、时限性和机密性。The previous multi-party non-repudiation protocols normally focus on one round message exchange. The multi-round message exchanges within the.same participatores are not studied well. For the latter condition,we presented a multi-party non-repudiation protocol using key chains which can reduce the TTP＇s storage requirements. The protocol consists of a dispute resolution policy and four sub-protocols, i. e. , the initialization sub-protocol, the exchange sub-protocol, the abort sub-protocol and the recovery sub-protocol. Technical discussions show that the protocol satis-fies fairness,timeliness and confidentiality.

关 键 词：安全协议 非否认 多方协议 密钥链 

分 类 号：TN918.1[电子电信—通信与信息系统]