摘要
将基于属性、不可否认和去中心3个概念相结合,提出去中心基于属性不可否认签名的定义和安全模型,并基于离散对数困难问题构造一个无双线性对的方案。该方案主要基于Cramer等的证据隐藏零知识证明协议,以Schnorr协议作为其基础Σ协议,以Shamir门限方案作为其秘密分享方案;再使用Fiat-Shamir转换得到一个(t,n)门限签名(BTS)方案;然后再对BTS方案进行不可否认、防共谋和去中心化处理;最后得到一个去中心基于属性不可否认签名方案,并在随机预言机模型下证明了其安全性。
Combining the concepts of attribute-based,undeniability and decentralization,a new concept of decentralized attribute-based undeniable signature with formal security model is proposed,and a concrete non-bilinear pair scheme based on discrete logarithm difficulty problem is constructed.The scheme uses the witness-hiding zero-knowledge proof protocol proposed by Cramer et al.And the Schnorr protocol as the basicΣprotocol,and uses the Shamir threshold scheme as its secret sharing scheme.Then,Fiat-Shamir transformation is used to obtain a(t,n)threshold signature(BTS)scheme.Then,undeniability,anti-collusion,and decentralization are performed on the BTS scheme.Finally,a decentralized attributes-based undeniable signature scheme is obtained,and its security is proved under the random oracle model.
作者
魏亮
黄振杰
陈群山
WEI Liang;HUANG Zhen-jie;CHEN Qun-shan(Fujian Key Laboratory of Granular Computing and Application(Minnan Normal University),Zhangzhou 363000;School of Computer Science,Minnan Normal University,Zhangzhou 363000,China)
出处
《计算机工程与科学》
CSCD
北大核心
2020年第6期1003-1011,共9页
Computer Engineering & Science
基金
福建省自然科学基金(2019J01750)
福建省中青年教师教育科研项目(JAT170345,JAT170346)。
关键词
数字签名
基于属性签名
不可否认签名
去中心
随机预言机模型
digital signature
attribute-based signature
undeniable signature
decentralization
random oracle model
