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›› 2004, Vol. 21 ›› Issue (4): 520-525.DOI: 10.7523/j.issn.2095-6134.2004.4.014

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An Efficient and Secure Group Signature Scheme

HE Ye-Feng, ZHANG Jian-Zhong   

  1. College of Mathematics and Information Science, Shaanxi Normal University, Xian 710062, China
  • Received:2003-09-24 Online:2004-07-10
  • Supported by:

    National Natural Science Foundation of China (10271069) and Natural Science Fundamental Research Program of Shaanxi (2002A03)

Abstract:

In this paper, we propose an efficient group signature scheme whose public key and signatureshave length independent of the number of group members and which allows the group manager to add newmembers to the group without modifying the public key.Furthermore, our scheme is secure and coalitionresistantunder the RSA assumption and the decisional Diffie-Hellman assumption.

Key words: signature of knowledge, e-th root of discrete logarithm, group signature, coalitionresistance

CLC Number: