Computer Engineering and Applications ›› 2011, Vol. 47 ›› Issue (3): 87-89.DOI: 10.3778/j.issn.1002-8331.2011.03.026

• 网络、通信、安全 • Previous Articles     Next Articles

Threshold signature scheme without trusted party

YUE Sheng,XIN Xiaolong   

  1. Department of Mathematics,Northwest University,Xi’an 710127,China
  • Received:2009-05-07 Revised:2009-07-05 Online:2011-01-21 Published:2011-01-21
  • Contact: YUE Sheng


岳 胜,辛小龙   

  1. 西北大学 数学系,西安 710127
  • 通讯作者: 岳 胜

Abstract: A new threshold signature scheme without a trusted party is proposed by the use of bilinear pairings.This scheme supposes that Private Key Generator(PKG) is not a trusted dealer.Group’s public key and private key are generated by the common members,can prevent member’s secret key from leaking,and solve the problems that the past scheme depends on the trusted party excessively and the rights of trusted party are too collective.The properties of robustness and unforgea-
bility are proved in the proposed scheme.

Key words: bilinear pairings, non-trusted party, threshold signature, Private Key Generator(PKG)

摘要: 利用双线性对构造了一个无可信中心门限签名方案。在方案中,假设PKG是不可信的,组成成员共同生成群公钥和私人密钥,避免了成员私人密钥的泄漏,解决了以往方案中过分依赖可信中心和可信中心权力过于集中的问题。证明了提出的方案具有健壮性和不可伪造性。

关键词: 双线性对, 无可信中心, 门限签名, 私钥产生中心

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