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计算机工程

• 安全技术 • 上一篇    下一篇

基于承签原语与多重签名的改进虚拟交易系统方案

张泓1,曹珍富1,2,董晓蕾1,2   

  1. (1.上海交通大学计算机科学与工程系,上海 200240;2.华东师范大学计算机科学与软件工程学院,上海 200062)
  • 收稿日期:2015-01-09 出版日期:2016-02-15 发布日期:2016-01-29
  • 作者简介:张泓(1990-),男,硕士研究生,主研方向为应用密码学、虚拟交易系统安全;曹珍富、董晓蕾,教授、博士、博士生导师。
  • 基金资助:
    国家自然科学基金资助项目(61161140320,61033014);国家“973”计划基金资助项目(2012CB723401)。

Improved Virtual Transaction System Scheme Based on Commitment-signature Primitive and Multisignature

ZHANG Hong  1,CAO Zhenfu  1,2,DONG Xiaolei  1,2   

  1. (1.Department of Computer Science and Engineering,Shanghai Jiaotong University,Shanghai 200240,China; 2.School of Computer Science and Software Engineering,East China Normal University,Shanghai 200062,China)
  • Received:2015-01-09 Online:2016-02-15 Published:2016-01-29

摘要: 四方参与者虚拟交易系统(4P_VES)在引入第三方支付检测和预防合谋欺骗行为后会增加系统交互流程,影响系统性能。为此,通过融合承诺与签名原语定义承签方案,提出改进的4P_VES方案。采用承签方案同时实现承诺验证与签名认证功能,简化交互流程,并利用多重签名技术减少签名验证次数。分析结果表明,改进的4P_VES方案具有不可伪造性、一致性、不可区分性等属性,且能降低虚拟币发行时间,提高系统整体性能。

关键词: 虚拟交易系统, 虚拟币, 融合原语, 承签方案, 多重签名

Abstract: As the third party payment is introduced into a Four-participants Virtual Economy System(4P_VES) to detect and prevent collusion cheat,so many interactions are added,and the system performance is affected.Aiming at the problem,this paper proposes an improved 4P_VES by commitment-signature scheme based on fusion primitive.Commitment-signature scheme realizes commitment verification and signature authentication,and simplifies the interactions.Multisignature reduces the times of signature verification.Analysis result shows that the improved 4P_VES scheme maintain the properties of unforgeability,consistency,unreusability,and it can reduce time cost,improve system overall performance.

Key words: virtual transaction system, virtual coin, usion primitive, commitment-signature scheme, multisignature

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