摘要
基于一种可转换的认证加密方法,设计出了一种新的包含半可信第三方的公平交换协议,并对其安全性质和特点进行了分析.分析表明,相对于现有的优化公平交换协议,新的协议结构简单,通信量较低,同时具有保密性、公平性、不可否认性和时限性.
A new fair exchange protocol with semi - trusted third party is proposed based on a new convertible authenticated encryption scheme. Both security properties and specialties of this protocol are analyzed. The analysis results show that the new protocol has a simpler structure and a lower communication overhead comparing to previous optimistic fair exchange protocols, and the properties of privacy, faireness, non-repudiation and timeliness are satisfied at the same time.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2006年第5期63-65,共3页
Journal of Beijing University of Posts and Telecommunications
基金
国家自然科学基金项目(60373059)
教育部博士点基金项目(20040013007)
关键词
公平交换
半可信第三方
可转换的认证加密
fair-exchange
semi-trusted third party
convertible authenticated encryption