Netinfo Security ›› 2016, Vol. 16 ›› Issue (6): 62-67.doi: 10.3969/j.issn.1671-1122.2016.06.010

• Orginal Article • Previous Articles     Next Articles

Research on a New Dynamic Threshold Digital Signature Scheme

Yansheng ZHANG, Xueming WANG(), Gege QIU   

  1. College of Computer Science and Information,Guizhou University,Guiyang Guizhou 550025, China
  • Received:2016-05-04 Online:2016-06-20 Published:2020-05-13

Abstract:

The paper presents a new dynamic threshold digital signature scheme to solve two problems of current dynamic threshold digital signature which are big computational field and conspiracy forgery attack. At first, we design a new key distribution scheme which is based on the multi-threshold multi-secret sharing protocol. It will hand keys out to group members and compute group public keys and group member public keys by using the new key distribution scheme and hyperelliptic curve cryptosystems. At last a dynamic threshold digital signature scheme is proposed according to EIGamal’s digital signature scheme. In the proposed scheme, multiple group public keys are shared among a group of signers, and each group public key has its specific threshold value.The new scheme has small computational field comparing with current schemes, and it is proved to be correct and is able to resist many forgery attacks according to theorems.

Key words: dynamic threshold digital signature scheme, computational field, conspiracy forgery attack, key distribution, multi-threshold multi-secret sharing protocol, hyperelliptic curve cryptosystems

CLC Number: