Journal of Guangdong University of Technology ›› 2007, Vol. 24 ›› Issue (1): 26-28.

• Comprehensive Studies • Previous Articles     Next Articles

Cryptanalysis of Mu-Varadharajan Group Signcryption Scheme

  

  1. (1.Faculty of Applied Mathematics,Guangdong University of Technology,Guangzhou 510090,China;2.School of Information and Mechanical Electronics Engineering,Guangzhou University,Guangzhou 510006,China)
  • Online:2007-02-01 Published:2007-02-01

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Abstract: This paper demonstrates a concrete attack to show that the MV group signcryption scheme fails to have unforgeability.Our attack allows a dishonest receiver to forge a valid ciphertext as if the genuine sender generated it.

Key words: group signcryption； unforgeability； discrete logarithm problem；

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