计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (35): 5-7.

• 博士论坛 • 上一篇    下一篇

一个完全分布式的可追踪门限-多重签名方案

杨木祥,洪 帆,杨秋伟   

  1. 华中科技大学 计算机学院 信息安全实验室,武汉 430074
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-12-11 发布日期:2007-12-11
  • 通讯作者: 杨木祥

Distributed traceable threshold-multisignature scheme

YANG Mu-xiang,HONG Fan,YANG Qiu-wei   

  1. Inf. Security Laboratory,College of Computer Sci. & Tech.,Huazhong University of Science and Technology,Wuhan 430074,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-12-11 Published:2007-12-11
  • Contact: YANG Mu-xiang

摘要: 门限-多重签名是结合了门限签名和多重签名的特点而产生的新的签名,这种签名体制既可以使多于门限t个以上的签名者产生合法的签名,同时又具有签名者可追踪的特性。提出了一个完全分布式的可追踪门限-多重签名,使得必须有t个或t个以上的诚实组成员合作才可能产生一个门限-多重签名,并且可以公开验证签名中每个签名成员的身份。该门限-多重签名方案是基于可证明安全的单签名变体改进的,具有较高的安全性。在协议的整个过程中利用了已证明安全的签名和签密技术,保障了协议过程的安全性及可验证性。方案本身及协议的安全性和高效性使得此方案具有较高的实用性。

关键词: 门限-多重签名, 分布式系统, 门限签名, 多重签名, 可追踪性

Abstract: Threshold-multisignature schemes combine the properties of threshold group-oriented signature schemes and multisignature schemes.This kind of signature scheme allows a threshold t or more group members to collaboratively sign on a message and the signers’ identifications can be traced and verified.A fully distributed threshold-multisignature scheme is proposed in this paper.The scheme is developed from a proved secure single signature scheme and has the same security of its basic version.In the progress of the protocols one secure signature scheme and one secure signcryption scheme are incorporated to ensure that the protocols are secure and verifiable.The security and efficiency of the scheme and the protocols make the scheme practical.

Key words: threshold-multisignature, distributed systems, threshold-signature, multisignature, traceability