三级对称叛徒追踪新方案  

New Three-level Symmetry Scheme of Traitor Tracing

作　　者：苏加军[1] 王新梅[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

出　　处：《计算机科学》2013年第8期96-99,共4页Computer Science

基　　金：国家973计划项目(2012CB316103)资助

摘　　要：提出了一种新的对称叛徒追踪方案。基于加密广播技术和Hash函数理论,构造了密钥方案、加密方案、解密方案和叛徒追踪算法,利用Chernoff界确定了系统参数值。新方案可以有效对抗加密广播业务中的共谋密钥攻击。相对于已有的CFN对称方案,新方案具有更低的个人密钥存储复杂度、用户计算复杂度和更少的数据冗余。This paper presented a new symmetry scheme of traitor tracing. Based on the broadcast encryption techniques and Hash function theory, the corresponding key scheme, encryption scheme, decryption scheme and traitor tracing algo- rithm were constructed in this paper. The proper values of system parameters were obtained by the Chernoff bound. The scheme in this paper has the advantages of lower storing complexity of personal key, lower user computing complexity and less data redundancy than existing CFN symmetry schemes and it can efficiently combat against the collusion key attack in the broadcast encryption.

关 键 词：加密广播 叛徒追踪 共谋密钥攻击 Chernoff界 HASH函数 

分 类 号：TN918[电子电信—通信与信息系统] TP393[电子电信—信息与通信工程]