一种可抵抗线性攻击的非对称公钥叛逆者追踪方案

一种可抵抗线性攻击的非对称公钥叛逆者追踪方案

于志强;杨波

(西安电子科技大学计算机网络与信息安全教育部重点实验室, 陕西西安 710071)

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-12-20 发布日期:2004-12-20

An asymmetric public-key traitor tracing scheme against linear attack

YU Zhi-qiang;YANG Bo

(Ministry of Education Key Lab. of Computer Network and Information Security, Xidian Univ., Xi'an 710071, China)

Received:1900-01-01 Revised:1900-01-01 Online:2004-12-20 Published:2004-12-20

摘要/Abstract

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．

关键词: 叛逆者追踪, 凸组合, 直接不可否认性, 防诬陷性

Abstract: A public-key traitor tracking 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 to asymmetric tracking ability and properties of direct non-repudiation, full frqmeproof. 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.

Key words: traitor tracing, convex combination, direct non-repudiation, full frqmeproof

中图分类号:

TP911.22

于志强;杨波. 一种可抵抗线性攻击的非对称公钥叛逆者追踪方案[J]. J4, 2004, 31(6): 943-947.

YU Zhi-qiang;YANG Bo.

An asymmetric public-key traitor tracing scheme against linear attack

[J]. J4, 2004, 31(6): 943-947.

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