Journal on Communications ›› 2016, Vol. 37 ›› Issue (Z1): 168-173.doi: 10.11959/j.issn.1000-436x.2016263

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Security analysis and improvement of two attribute-based signature schemes

Xiao YANG1,Guang-li XIANG1,Jiang-hong WEI2,3,Rui-zong SUN1   

  1. 1 School of Computer Science and Technology,Wuhan University of Technology,Wuhan 430070,China
    2 PLA Information Engineering University,Zhengzhou 450001,China
    3 Stake Key Laboratory of Mathematical Engineering and Advanced Computing,Zhengzhou 450001,China
  • Online:2016-10-25 Published:2017-01-17

Abstract:

In order to overcome the drawbacks of current attribute-based signature (ABS) schemes in terms of security,efficiency and signing policy,Ma,et al.and Cao,et al.respectively proposed a threshold ABS with single attribute au-thority and a multi-authority ABS with signing policy supporting AND,OR,threshold gates,and presented the security proof of their schemes under computational Diffie-Hellman assumption.Both schemes were demonstrated have security pitfalls by presenting specified attacks against them.Specifically,their schemes are all vulnerable to forgery attack.Thus,they are not feasible for practical applications.In addition,the cause of the flaws in these ABS schemes are presented,as well as an improvement of Ma et al.'s scheme.

Key words: attribute-based signature, security analysis, forgeable attack

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