云计算中改进概率公钥加密的移动设备数据隐私保护方法

基于云计算的服务具有许多优势,但外包数据隐私保护一直以来都有待优化解决。针对云计算中资源受限的移动设备外包数据安全问题,提出一种基于改进概率公钥加密的隐私保护方法。使用概率公钥加密算法加密数据;在云中数据通过搜索其空间关键词进行文件检索;在确保数据准确性和隐私安全性的前提下,实现云计算中移动设备外包数据安全有效加密后的隐私保护。仿真实验结果表明,该方案不仅可以确保数据隐私和计算速度,同时能够减少通信开销。相比于双轮可搜索加密(TRSE)方案、可排序多关键词检索加密(MRSE)方案和实时循环移位加密(RRSE)等方案,该方案在可行性和计算效率方面都有所提升。

DATA PRIVACY-PRESERVING METHOD OF MOBILE DEVICES BASED ON IMPROVED PROBABILISTIC PUBLIC KEY ENCRYPTION IN CLOUD COMPUTING

Service based on cloud computing has many advantages,but the privacy protection of outsourced data has always been optimized.We propose a privacy protection method based on improved probabilistic public key encryption(IPPKE)to solve the outsourcing data security problem of resource-constrained mobile devices in cloud computing.It used probabilistic public key encryption algorithm to encrypt data,and then searched the data in the cloud by searching its spatial keywords for file retrieval.Under the premise of ensuring the accuracy and privacy of the data,the privacy protection after security and effective encryption of outsourced data of mobile devices in cloud computing was realized.Simulation results show that the proposed scheme can not only ensure data privacy and computing speed,but also reduce communication cost.Compared with the two round searchable encryption(TRSE),multi-keyword ranked search encrypted(MRSE)and real-time shift encipher(RRSE)algorithms,our scheme improves the feasibility and computational efficiency.