摘要
Matsushita等人提出了一个可灵活撤销用户的公钥叛逆者追踪方案,但其方案是对称方案,并且没有提供多服务的功能。利用不经意多项式估值协议(OPE)和服务参数提出了一个改进的Matsushita方案。改进方案在保持了原Matsushita方案可灵活撤销用户、黑盒子追踪、安全性不变的基础上,增加了提供多种服务、防止叛逆者抵赖(非对称)等优点,整体性能好于Matsushita方案。
Matsushita et al. proposed a traitor tracing scheme with flexible user revocation, which was a symmetric scheme, and did not provide multiple-service capability. An improved scheme was proposed by using Oblivious Polynomial Evaluation(OPE) and service parameter. In this improved scheme, such features of Matsushita's as flexible user revocation, black-box tracing and security remained, and other advantages such as providing multi-service and preventing traitors from repudiation(asymmetry) were added. The whole capabilities of the improved scheme were better than that of Matsushita's.
出处
《计算机应用》
CSCD
北大核心
2006年第8期1810-1812,共3页
journal of Computer Applications
基金
国家自然科学基金资助项目(60372046)
华为基金资助项目(YSCB2005037NP)