Journal on Communications ›› 2018, Vol. 39 ›› Issue (2): 65-72.doi: 10.11959/j.issn.1000-436x.2018014

• Papers • Previous Articles     Next Articles

Partially blind proxy re-signature scheme with proven security

Xiaodong YANG1,2,Chunlin CHEN1,Ping YANG1,Faying AN1,Tingchun MA1,Caifen WANG1   

  1. 1 College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China
    2 State Key Laboratory of Cryptology,Beijing 100878,China
  • Revised:2017-10-30 Online:2018-02-01 Published:2018-03-28
  • Supported by:
    The National Natural Science Foundation of China(61662069);The China Postdoctoral Science Foundation(2017M610817);The Science and Technology Planning Project of Gansu Province(1506RJZA130);The Science and Technology Project of Lanzhou(2013-4-22);Foundation for Excellent Young Teachers by Northwest Normal University(WNU-LKQN-14-7)

Abstract:

In order to solve the problem of anonymity and controllability of blind proxy re-signature,the concept of partially blind proxy re-signature was introduced by using the idea of partially blind signature.Furthermore,the security definition of partially blind proxy re-signature was also given.Based on the improved Shao scheme,a partially blind proxy re-signature scheme in the standard model was proposed.The proposed scheme allows proxy to add some public information negotiated by delegatee and proxy to re-signature.The scheme not only can achieve the transparent signature conversion from delegatee to proxy and protect privacy of message re-signed by proxy,but also prevented illegal use of re-signature.Analysis results show that the proposed scheme is correct,multi-use,partially blind and existentially unforgeable.It is more suitable for e-government data exchange system,cross-domain authentication system and so on.

Key words: partially blind proxy re-signature, unforgeability, multi-use, standard model

CLC Number: 

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