计算机工程 ›› 2020, Vol. 46 ›› Issue (4): 143-150.doi: 10.19678/j.issn.1000-3428.0054698

• 网络空间安全 • 上一篇    下一篇

无证书的共享数据公开审计方案

刘雪艳, 贺啸梅, 芦婷婷, 罗玉坤   

  1. 西北师范大学 数学与统计学院, 兰州 730070
  • 收稿日期:2019-04-23 修回日期:2019-06-16 出版日期:2020-04-15 发布日期:2019-05-24
  • 作者简介:刘雪艳(1978-),女,副教授,主研方向为属性密码学、信息安全;贺啸梅、芦婷婷、罗玉坤,硕士研究生。
  • 基金项目:
    国家自然科学基金(61662071,61562077)。

Certificateless Public Audit Scheme for Shared Data

LIU Xueyan, HE Xiaomei, LU Tingting, LUO Yukun   

  1. College of Mathematics and Statistics, Northwest Normal University, Lanzhou 730070, China
  • Received:2019-04-23 Revised:2019-06-16 Online:2020-04-15 Published:2019-05-24

摘要: 公钥密码体制中多数公开审计方案存在证书管理问题,会增加存储负荷和通信成本。为有效验证半可信云中数据的完整性,减少证书管理的额外开销,提出一种无证书的公开审计方案。采用同态技术实现批审计,高效完成多个用户的审计需求,通过ELGamal加密体制对用户身份进行追踪,防止用户的恶意行为。安全性和性能分析结果表明,该方案安全高效,能够抵抗类型Ⅰ和类型Ⅱ敌手攻击,并满足签名不可伪造性和签名用户身份隐私性。

关键词: 无证书方案, 公开审计, 批审计, 隐私保护, 不可伪造性

Abstract: Many public audit schemes in public key cryptosystem have certificate management problem,which will increase storage load and communication cost.In order to effectively verify the integrity of the data in the semi-trusted cloud and reduce the extra cost of certificate management,this paper proposes a certificateless public audit scheme.The batch audit is realized by using homomorphic technology,so as to efficiently complete the audit needs of multiple users.The ELGamal encryption system is adopted to track user identity,thus preventing the malicious behavior of users.The results of security and performance analysis show that the proposed scheme is safe and efficient.It can resist typeⅠand typeⅡadversary attacks and satisfy the unforgeability of signature and the privacy of user identity.

Key words: certificateless scheme, public audit, batch audit, privacy protection, unforgeability

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