云计算环境下基于矩阵加密的查询算法研究

Research of Query Algorithm Based on Matrix Encryption in Cloud Computing Environment

在云计算环境下,常常会基于对数据密文索引的构建来实现快速查询数据的目的。针对密文向量的密文关键词索引向量、查询构建方式进行了设计,以MRSE框架为指导,采用矩阵加密法通过MKQE框架所定义的向量加密密钥。在使用向量进行处理时,对新密钥的生成算法进行设计,同一索引的密钥在数据更新后也进行动态的更新,保证了原索引能够在数据变化以后仍被查询到。可基于密文这一背景下展开查询、计量等工作,因此在历史查询中,云服务供应商无法对伪查询进行构造。仿真实验结果表明本文提出的数据安全查询算法性能优良。

In the cloud computing environment,the purpose of fast query data is often based on theconstruction of data ciphertext index.In this paper,the key words of the ciphertext vector and the queryconstruction method are designed,and the MRSE framework is used for the guidance,and the vectorencryption key defined by the MKQE framework is adopted by the matrix encryption method.Whenusing vector processing,to design the new key generation algorithm,the same index keys alsodynamically updated after data update,ensure the original index can still be queried to after datachanges.Based on the background of ciphertext,the query and metering work can be launched.Therefore,in the historical query,the cloud service provider cannot construct the pseudo-query.Thesimulation results show that the proposed data security query algorithm has good performance.