Journal on Communications ›› 2013, Vol. 34 ›› Issue (8): 185-190.doi: 10.3969/j.issn.1000-436x.2013.08.024

• Correspondences • Previous Articles    

ID-based on-line/off-line threshold signature scheme without bilinear pairing

Xiao-dong YANG,Chun-mei LI,Ting XU,Cai-fen WANG   

  1. College of Computer Science and Engineering,Northwest Normal University,Lanzhou 730070,China
  • Online:2013-08-25 Published:2017-08-31
  • Supported by:
    The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Founda-tion for Excellent Young Teachers by Northwest Normal University;The Founda-tion for Excellent Young Teachers by Northwest Normal University

Abstract:

Based on the distributed key generation (DKG) protocol and verifiable secret sharing (VSS) protocol,an identity-based on-line/off-line threshold signature scheme was proposed in order to eliminate the cost of the certificate management in the public key cryptosystem and improve the performance of on-line/off-line threshold signature schemes.This scheme was proven to be robust and unforgeable under the discrete logarithm assumption.Analysis results show that the proposed scheme eliminates the problem of certificate management and pairing operation,and it greatly reduces computation cost of off-line threshold signature generation algorithm and signature verification algorithm.The new scheme is more efficient than the available on-line/off-line threshold signature schemes.

Key words: on-line/off-line threshold signature, identity-based cryptography, bilinear pairing, simulability

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