Journal of Computer Applications

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Improvement of structured multi-signature scheme with signers' intentions

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  • Received:2007-07-30 Revised:1900-01-01 Online:2008-01-01 Published:2008-01-01
  • Contact: Zecheng Wang

改进的带签名者意向的结构化多重签名方案

王泽成 斯桃枝 李志斌   

  1. 华东师范大学信息学院 上海第二工业大学计算机与信息学院 华东师范大学信息学院
  • 通讯作者: 王泽成

Abstract: The security weakness of structured multi-signature scheme with signers' intentions was pointed out. It is that the signers' intentions could be modified by an inner or outer attacker, thus the security of this type of signature is tampered. By using a more secure signing algorithm to sign the signers' intentions, the problem was solved. The improved scheme not only has all the necessary security properties of this type of signature, but also has improvement in efficiency - shorter signature size, more efficient in communication and signing computation. The shortage of the new scheme is some decrease in the efficiency of verification.

Key words: digital signature, multi-signature, structured multi-signature, signers’ intentions, bilinear pairings

摘要: 分析了一个带签名者意向的结构化多重签名方案所存在的安全性弱点——签名者的意向可以被外部或内部的攻击者篡改。通过使用更安全的算法对签名者的意向进行签名避免了这一弱点。改进后的方案除具有所有必需的安全性质外,在效率方面也有所改进:多重签名长度更短,通信效率和签名算法效率更高。新方案的不足之处是验证算法效率有所降低。

关键词: 数字签名, 多重数字签名, 结构化多重签名, 签名者意向, 双线性对