The Cloud Storage Ciphertext Retrieval Scheme Based on ORAM  

作　　者：SONG Ningning SUN Yan 

机构地区：[1]School of Mechanical Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China [2]School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing, 100083, P.R. China

出　　处：《China Communications》2014年第A02期156-165,共10页中国通信（英文版）

基　　金：the National Natural Science Foundation of China under Grant，the Fundamental Research Funds for the Central Universities under Grant No.FRF-TP-14-046A2

摘　　要：Due to its characteristics distribution and virtualization, cloud storage also brings new security problems. User＇s data is stored in the cloud, which separated the ownership from management. How to ensure the security of cloud data, how to increase data availability and how to improve user privacy perception are the key issues of cloud storage research, especially when the cloud service provider is not completely trusted. In this paper, a cloud storage ciphertext retrieval scheme based on AES and homomorphic encryption is presented. This ciphertext retrieval scheme will not only conceal the user retrieval information, but also prevent the cloud from obtaining user access pattern such as read-write mode, and access frequency, thereby ensuring the safety of the ciphertext retrieval and user privacy. The results of simulation analysis show that the performance of this ciphertext retrieval scheme requires less overhead than other schemes on the same security level.

关 键 词：cloud storage ciphertext retrieval scheme ORAM index map 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论] TP309[自动化与计算机技术—计算机科学与技术]