• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

Computer Engineering & Science

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Decentralized attribute-based undeniable signature

WEI Liang1,2,HUANG Zhen-jie1,CHEN Qun-shan2   

  1. (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)
  • Received:2019-10-21 Revised:2020-01-04 Online:2020-06-25 Published:2020-06-25

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.
 

Key words: digital signature, attribute-based signature, undeniable signature, decentralization, random oracle model