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中国科学院大学学报 ›› 2011, Vol. 28 ›› Issue (3): 389-397.DOI: 10.7523/j.issn.2095-6134.2011.3.017

• 论文 • 上一篇    下一篇

Σ-保密的隐秘信息检索协议

张子坤, 吕克伟   

  1. 中国科学院研究生院信息安全国家重点实验室, 北京 100049
  • 收稿日期:2010-06-07 修回日期:2010-08-13 发布日期:2011-05-15
  • 基金资助:

    国家自然科学基金(60970154)和国家973计划项目(2007CB311202)资助 

Σ-private private information retrieval protocols

ZHANG Zi-Kun, LV Ke-Wei   

  1. State Key Laboratory of Information Security, Graduate University, Chinese Academy of Sciences,Beijing 100049, China
  • Received:2010-06-07 Revised:2010-08-13 Published:2011-05-15

摘要:

定义Σ-保密的隐秘信息检索(PIR)协议,并利用基于一般存取结构的可验证秘密分享给出了Σ-保密PIR协议的构造.然后,基于鲁棒的乘法协议,构造了数据库安全的Σ-保密PIR协议,使得对于(Σ,Δ)-敌手而言,数据库内容也是保密的.所得协议的通信复杂度均与存取结构大小有关,对于服务器较少的情形是有效的.

关键词: 隐秘信息检索协议, 可验证秘密分享, 一般存取结构

Abstract:

We pose the definition of Σ-private private information retrieval (PIR) protocol,and then construct a Σ-private PIR protocol based on verifiable secret sharing(VSS)scheme on general access structure . We also construct an efficient robust Σ-private PIR protocol based on robust multiplication protocol and the database is also secure. The corresponding communication complexity is dependent on the size of the access structure and is efficient for minority of servers.

Key words: private information retrieval protocol, verifiable secret sharing scheme, general access structure

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