Provably secure cloud storage for mobile networks with less computation and smaller overhead  

作　　者：Rui ZHANG Hui MA Yao LU Yang LI 

机构地区：[1]State Key Laboratory of Information Security, Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China [2]University of Chinese Academy of Sciences, Beijing 100049, China [3]Department of Complexity Science and Engineering, University of Tokyo, Kashwa City, Japan [4]Oracle, Beijing 100193, China

出　　处：《Science China(Information Sciences)》2017年第12期175-187,共13页中国科学（信息科学）（英文版）

基　　金：supported by Strategic Priority Research Program of the Chinese Academy of Sciences(Grant Nos.XDA06010703,XDA06010701);National Natural Science Foundation of China(Grant Nos.61472416,61272478,61632020);Foundation of Science and Technology on Information Assurance Laboratory(Grant No.KJ-14-002);CREST,Japan Science and Technolegy Agency

摘　　要：Secure cloud storage（SCS） guarantees the data outsourced to the cloud to remain intact as it was before being outsourced. Previous schemes to ensure cloud storage reliability are either computationally heavy or admitting long overheads, thus are not suitable for mobile networks with strict computation/bandwidth restrictions. In this paper, we build an efficient SCS system for mobile networks based on homomorphic MAC and propose domain extension to enhance the security level and flexibility of the system. In addition, we give a formal security model which is compatible to previous ones and analyze our system in that model. We also give implementations on mobile devices to verify the effectiveness of our system.Secure cloud storage（SCS） guarantees the data outsourced to the cloud to remain intact as it was before being outsourced. Previous schemes to ensure cloud storage reliability are either computationally heavy or admitting long overheads, thus are not suitable for mobile networks with strict computation/bandwidth restrictions. In this paper, we build an efficient SCS system for mobile networks based on homomorphic MAC and propose domain extension to enhance the security level and flexibility of the system. In addition, we give a formal security model which is compatible to previous ones and analyze our system in that model. We also give implementations on mobile devices to verify the effectiveness of our system.

关 键 词：secure cloud storage mobile networks homomorphic MAC domain extension applied cryptography 

分 类 号：TP309[自动化与计算机技术—计算机系统结构] TP333[自动化与计算机技术—计算机科学与技术]