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.
出处
《计算机科学》
CSCD
北大核心
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
关键词
安全协议
非否认
多方协议
密钥链
Security protocol, Non-repudiation, Multi-party protocol,Key chains