Acta Metallurgica Sinica(English letters) ›› 2011, Vol. 18 ›› Issue (1): 113-120.doi: 10.1016/S1005-8885(10)60036-2

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Multi-policy threshold signature with distinguished signing authorities

王锋1,周由胜1,谷利泽2,郑世慧2,杨义先3   

  1. 1. 北京邮电大学计算机学院
    2. 北京邮电大学信息安全中心
    3. 北京邮电大学网络与交换技术国家重点实验室信息安全中心;北京邮电大学网络与信息攻防技术教育部重点实验室;北京邮电大学灾备技术国家工程实验室
  • 收稿日期:2010-06-01 修回日期:2010-11-08 出版日期:2011-02-28 发布日期:2011-02-28
  • 通讯作者: 王锋 E-mail: flys99@126.com
  • 基金资助:

    国家自然基金课题;973项目;国家科技重大专项项目

Multi-policy threshold signature with distinguished signing authorities

  • Received:2010-06-01 Revised:2010-11-08 Online:2011-02-28 Published:2011-02-28
  • Contact: WANG Feng E-mail: flys99@126.com
  • Supported by:

    ;973 Project;National S&T Major Program

摘要:

Threshold signature plays an important role to distribute the power of a single authority in modern electronic society. In order to add functions and improve efficiency of threshold signatures, a multi-policy threshold signature scheme with distinguished signing authorities is proposed. In the scheme two groups can sign and verify each other, so the scheme is two-way signing and verifying. Moreover, the threshold values of the two groups can change with the security classification of the signing document, every discretionary signatory only signs a small part of the document instead of the whole one, so the bandwidth of data transmission for group signature construction can be reduced and the size of group signature is equivalent to that of any individual signature.

关键词:

threshold signature, multi-policy, group verified, distinguished signing authorities

Abstract:

Threshold signature plays an important role to distribute the power of a single authority in modern electronic society. In order to add functions and improve efficiency of threshold signatures, a multi-policy threshold signature scheme with distinguished signing authorities is proposed. In the scheme two groups can sign and verify each other, so the scheme is two-way signing and verifying. Moreover, the threshold values of the two groups can change with the security classification of the signing document, every discretionary signatory only signs a small part of the document instead of the whole one, so the bandwidth of data transmission for group signature construction can be reduced and the size of group signature is equivalent to that of any individual signature.

Key words:

threshold signature, multi-policy, group verified, distinguished signing authorities