摘要
提出了一种可抵抗线性组合(凸组合)攻击的公钥叛逆者追踪方案,利用不经意多项式估值协议构造密钥协商过程,具有非对称的追踪能力及直接不可否认性、防诬陷性等特点,并可确定出所有叛逆用户.由于该方案在发送加密数据产品时不涉及用户解密密钥的任何信息,从而与现有方案相比较提高了安全性能.
A public-key traitor tracing scheme against linear combination(convex combination) attack is presented, which makes use of the oblivious polynomial evaluation protocol in the secret key negotiation process to achieve the asymmetric tracing ability and properties of direct non-repudiation, full frameproof. In addition, all the traitors can be determined by overwhelming probobility in our scheme. Furthermore, any information on the decreption key of users will not be involved in broadcasting data products, and compared with current schemes, security is improved.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2004年第6期943-947,共5页
Journal of Xidian University
基金
国家自然科学基金资助项目(60372046)