| 去中心基于属性不可否认签名 |
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| 引用本文： | 魏亮,黄振杰,陈群山.去中心基于属性不可否认签名[J].计算机工程与科学,2020,42(6):1003-1011. |
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| 作者姓名： | 魏亮 黄振杰 陈群山 |
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| 作者单位： | （1.福建省粒计算及其应用重点实验室（闽南师范大学)，福建 漳州 363000;
2.闽南师范大学计算机学院，福建 漳州 363000） |
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| 基金项目： | 福建省自然科学基金;福建省中青年教师教育科研项目 |
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| 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。
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| 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 |
| 收稿时间： | 2019-10-21 |
| 修稿时间： | 2020-01-04 |
Decentralized attribute-based undeniable signature |
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| WEI Liang,HUANG Zhen-jie,CHEN Qun-shan.Decentralized attribute-based undeniable signature[J].Computer Engineering & Science,2020,42(6):1003-1011. |
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| Authors: | WEI Liang HUANG Zhen-jie CHEN Qun-shan |
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| Affiliation: | (1.Fujian Key Laboratory of Granular Computing and Application(Minnan Normal University),Zhangzhou 363000;
2.School of Computer Science,Minnan Normal University,Zhangzhou 363000,China) |
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| Abstract: | 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 basic Σ protocol, 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. |
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| Keywords: | digital signature attribute-based signature undeniable signature decentralization random oracle model |
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