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›› 2005, Vol. 22 ›› Issue (2): 197-201.DOI: 10.7523/j.issn.2095-6134.2005.2.012

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Security Analysis and Improvement of a Message Recovery Signature Scheme

LUO Wen-Jun1, 3, LONG Shi-Gong2, 3   

  1. 1. Department of Maths, Guizhou University, Guiyang 550025, China;
    2. Institute of Computer Science, Guizhou Industry University, Guiyang 550025, China;
    3. Institute of Computer science, Guizhou University, Guiyang 550025, China
  • Received:2004-04-15 Revised:2004-06-07 Online:2005-03-15

Abstract:

Recently, Lu-Chen proposed a message recovery signature scheme. In this paper, we give a security analysis of Lu-Chen's message recovery signature scheme, and present a forgery attack on the scheme. In the end,we propose an improved scheme, and give a security analysis of our scheme.

Key words: digital signature, message recovery, factorization, discrete logarithm

CLC Number: