北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2013, Vol. 36 ›› Issue (2): 15-19.doi: 10.13190/jbupt.201302.15.zhangkl

• 论文 • 上一篇    下一篇

匿名和可问责平衡的信誉系统

张柯丽, 杨 榆, 杨义先   

  1. 北京邮电大学 信息安全中心, 北京 100876
  • 收稿日期:2012-06-28 修回日期:2012-12-17 出版日期:2013-04-30 发布日期:2013-03-25
  • 通讯作者: 张柯丽 E-mail:kelicybergirl@163.com
  • 作者简介:张珂丽(1976-),女,博士生,Email:zhangkeli@bupt.edu.cn 杨义先(1961-),男,教授,博士生导师
  • 基金资助:

    国家自然科学基金项目(61003285);国家自然科学基金项目(61121061);国家科技支撑项目(2012BAH37B05)

Balance of Anonymity and Accountability in Reputation System

ZHANG Ke-li, YANG Yu, YANG Yi-xian   

  1. Information Security Center, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2012-06-28 Revised:2012-12-17 Online:2013-04-30 Published:2013-03-25

摘要:

针对现有基于临时身份信誉系统存在匿名和信誉的矛盾冲突、信誉评价不可控等问题,提出了一种基于条件匿名的信誉模型,对匿名用户之间的信誉评价进行监控,只有满足匿名条件的用户才能获得信誉值,违规用户会暴露身份并遭受惩罚. 此外,本模型将信誉帐号与用户真实身份绑定,并基于盲签名进行信誉值更新,解决了信誉与匿名的冲突问题. 分析结果显示:本模型在确保用户匿名地获取、更新和展示信誉值的条件下,可使信誉系统安全可控,并限制了填塞攻击和女巫攻击.

关键词: 隐私, 条件匿名, 信誉系统

Abstract:

In the pseudonyms based reputation system, there exist conflicts between anonymity and reputation. The reputation evaluation between pseudonyms sometimes appears out of control. A preserving reputation system based conditional anonymity is proposed,with which, the reputation evaluation between pseudonyms is monitored. Only the users who meet the conditional anonymity can obtain the trust value. Violators can be detected and punished. Furthermore, the model makes the real identity blinding reputation account, and based on blind signature, the reputation is updated and the conflict between anonymity and reputation is solved. Analysis shows the scheme guarantees user anonymously gains trust value, updates and demonstrates reputation, makes the reputation in control and limits the ballot-stuffing and Sybil attacks.

Key words: privacy, conditional anonymity, reputation system

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