支持多服务的CRT叛逆追踪方案

MULTI-SERVICE SUPPLIED CRT TRAITOR TRACING SCHEME

随着网络应用的不断研究和发展,叛逆追踪技术的研究和方案的构造倍受业内研究人员的关注。通过构造基于辫群安全问题的非对称加密方式,增强密文块的安全性,实现多服务的支持;通过改进基于中国剩余定理的使能块安全加密,实现叛逆用户的判定和追踪。改进的叛逆追踪方案既保持了原有方案的黑盒追踪高效率,可证明安全性和良好的添加和撤销,还支持多服务,具有更高的安全性和不可抵赖性。

With the continuous research and development of network applications, researches and schemes of traitor tracing technology are attracting much attention from researchers. The paper, by constructing braid group security issue based asymmetric encryption method, strengthens cipher text blocks＇ security and realizes multi-service supplication, and by improving Chinese remainder theorem based can block secure encryption, realizes traitor user determination and tracing. The improved traitor tracing scheme not only maintains the original scheme＇s black box tracing efficiency, so that it can validate security as well as fine addition and revocation, hut also supports multiple services so that it bears higher security and non-repudiation.