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arXiv 1502.07994cs.CR
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基于安全多方计算的秘密共享保密数据存取系统

An Effective Private Data storage and Retrieval System using Secret sharing scheme based on Secure Multi-party Computation

Divya G. Nair, V. P. Binu, G. Santhosh Kumar

摘要:

外包数据的隐私是一个主要的挑战。网络环境的不安全和服务提供商的不可信是使数据库成为服务的障碍。个人身份信息的收集和存储是一个主要的隐私问题。在线公共数据库和资源对用户隐私构成重大风险,因为恶意数据库所有者可能会监视用户查询并推断出有关客户的有用信息。数据隐私方面的挑战是与第三方共享数据,一个私有的信息检索(PIR),它是一种基于网络的信息检索技术,它可以在保证信息安全的同时,防止有价值的信息被第三方未经授权的访问和使用。方案允许用户在查询数据库的同时隐藏检索到的数据的身份。保密性的简单解决方案是在外包之前加密数据。查询执行,密钥管理和统计推断是这种情况下的主要挑战。所提出的系统提出了一种使用秘密共享技术来安全存储和检索私有数据的机制。其思想是开发一种机制来存储私有信息,该机制具有高度可用的存储提供者,可以从任何地方使用查询访问,同时隐藏实际的数据值私有信息检索系统采用基于秘密共享的安全多方计算(SMC)技术实现。多方计算允许多方在各自的私有输入上计算联合函数,通过对不同服务器所拥有的份额进行安全计算来获得查询结果。

英文摘要:

Privacy of the outsourced data is one of the major challenge.Insecurity of the network environment and untrustworthiness of the service providers are obstacles of making the database as a service.Collection and storage of personally identifiable information is a major privacy concern.On-line public databases and resources pose a significant risk to user privacy, since a malicious database owner may monitor user queries and infer useful information about the customer.The challenge in data privacy is to share data with third-party and at the same time securing the valuable information from unauthorized access and use by third party.A Private Information Retrieval(PIR) scheme allows a user to query database while hiding the identity of the data retrieved.The naive solution for confidentiality is to encrypt data before outsourcing.Query execution,key management and statistical inference are major challenges in this case.The proposed system suggests a mechanism for secure storage and retrieval of private data using the secret sharing technique.The idea is to develop a mechanism to store private information with a highly available storage provider which could be accessed from anywhere using queries while hiding the actual data values from the storage provider.The private information retrieval system is implemented using Secure Multi-party Computation(SMC) technique which is based on secret sharing. Multi-party Computation enable parties to compute some joint function over their private inputs.The query results are obtained by performing a secure computation on the shares owned by the different servers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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