摘要
运用级联码的思想提出一种新的抗合谋数字指纹编码算法及其相应的跟踪算法.编码算法中内码采用基于混沌序列的新的二用户合谋安全码,外码采用IPP码.理论分析和实验结果表明,在合谋人数为2的情况下,该算法能对非法分发者进行有效跟踪.与Boneh-Shaw的编码算法相比,在同样的错误概率下,本算法的数字指纹编码长度得到有效缩短.
Based on concatenated codes, a digital fingerprint coding and tracing algorithm is proposed. A new constructed code based on chaos is used as inner code, and IPP code is used as outer code. Both theoretical analysis and experimental results show that under the collusion size 2, by the fingerprinting algorithm, the owner can trace the traitors efficiently. Compared with Boneh-Shaw fingerprinting scheme, under the same collusion size and error probability, the algorithm shortens digital fingerprint length greatly.
出处
《小型微型计算机系统》
CSCD
北大核心
2009年第5期843-847,共5页
Journal of Chinese Computer Systems
基金
国家高技术研究发展计划项目(2007AA01Z309)资助
关键词
数字指纹
合谋攻击
混沌序列
级联码
digital fingerprints
collusion attack
chaos
concatenated code
