基于Paillier加密的数据多副本持有性验证方案

发布时间：2019-01-16 06:55

【摘要】：云存储服务中,用户将数据存储在不可信的云储存服务器上,为检查云存储中服务提供商(CSP)是否按协议完整地存储了用户的所有数据副本,提出一种支持对数据副本进行动态操作的基于Paillier加密的数据多副本持有性验证方案,即DMR-PDP方案。该方案为实现多副本检查,将文件块以文件副本形式存储在云服务器上,将各副本编号与文件连接后利用Paillier密码系统生成副本文件以防止CSP各服务器的合谋攻击。利用BLS签名实现对所有副本的批量验证。将文件标志和块位置信息添加到数据块标签中,以保证本方案的安全性,支持对文件的动态更新操作。安全性分析和仿真实验结果表明,该方案在安全性、通信和计算开销方面的性能优于其他文献提出的方案,极大地提高了文件存储和验证的效率,减少了计算开销。
[Abstract]:In a cloud storage service, a user stores data on an untrusted cloud storage server, to check if (CSP), the service provider in cloud storage, stores all copies of the user's data as agreed, This paper presents a multi-replica holding verification scheme based on Paillier encryption, which supports dynamic operation of data replicas, that is, DMR-PDP scheme. In order to realize multi-replica checking, the file block is stored on the cloud server in the form of file replica. After connecting each copy number to the file, the Paillier cryptosystem is used to generate the replica file to prevent the collusion attack of each CSP server. BLS signature is used to realize batch verification of all copies. In order to ensure the security of the scheme and support the dynamic update operation of the file, the file flag and block location information are added to the data block label. The results of security analysis and simulation experiments show that the performance of the proposed scheme is superior to that of other literatures in terms of security, communication and computing overhead, which greatly improves the efficiency of file storage and verification, and reduces the computational overhead.
【作者单位】：四川医科大学现代教育技术中心;中南大学信息科学与工程学院;
【基金】：国家自然科学基金青年科学基金项目(51308465) 四川医科大学校级课题(JG2015086)资助
【分类号】：TP333;TP309

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