一种基于同态公钥加密体制的匿名数字指纹方案  

An Anonymous Fingerprinting Scheme Based on Homomorphic Public Key Cryptosystems

作　　者：孙中伟[1] 冯登国[1] 

机构地区：[1]中国科学院软件所信息安全国家重点实验室,北京100080

出　　处：《中山大学学报（自然科学版）》2004年第A02期109-112,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家973资助项目(G1999035802);国家杰出青年科学基金资助项目(60025205);国家自然科学基金资助项目(90304007)

摘　　要：随着电子商务的日益普及,如何保护数字多媒体作品的版权已成为当前迫切需要解决的问题。基于同态公钥密码体制的匿名指纹模式因为实现简单而受到人们的重视。分析了现有的基于同态公钥加密体制的数字指纹方案所存在的问题,提出了一种基于同态公钥加密体制的匿名数字指纹方案。分析表明,该方案具有用户的匿名及不可关联、发行商的可保证安全和用户的可保证安全等特性。With the widespread applications of the e_commerce, copyright protection of multimedia content being sold is a key problem to be solved. Because of their superior efficiency for practical implementation, the anonymous fingerprinting schemes based on homomorphic public key cryptosystems have attracted a lot of attentions recently. This paper presents a new type of anonymous fingerprinting scheme, which is based on homomorphic public key cryptosystems. The security analysis shows that the proposed scheme is secure for both seller and buyer, and has the properties of anonymity and unlinkability for the buyer.

关 键 词：同态公钥加密体制 数字水印 匿名指纹 

分 类 号：O436[机械工程—光学工程]