分布式密文全文检索系统设计及安全性研究

Research on distributed full-ciphertext retrieval system's design and security

敏感数据存储的安全和检索效率问题越来越引起人们的重视。针对密文状态下高效全文检索的需求,提出基于超节点P2P结构的分布式密文全文检索系统的体系结构(Super-P2PFCRS),将密文全文检索系统(FCRS)作为Super-P2PFCRS中的节点,把信息检索技术与P2P系统相集成,克服了集中式信息检索系统的局限性。重点阐述了密文全文检索系统FCRS的内部结构及运行过程中可能存在的安全问题以及抗攻击的方法。

Both of the sensitive data storage security and retrieval efficiency get increasing attention.Based on super-node P2P architecture,a distributed full-ciphertext retrieval system（Super-P2PFCRS） is proposed.Taking the full-ciphertext retrieval system as a node in the Super-P2PFCRS,the proposed system,which integrates the P2P systems with information retrieval technology,can overcome the limitations of conventional centralized retrieval systems.The internal structure of the FCRS,the security problems that may occur,and the anti-attack method are detailed in this paper.