supported in part by National Natural Science Foundation of China under Grant (61070164,61272415);Natural Science Foundation of Guangdong Province, China under Grant (S2012010008767);Science and Technology Planning Project of Guangdong Province, China under Grant (2013B010401015)
Unauthorized tampering with outsourced data can result in significant losses for both data owner and users.Data integrity therefore becomes an important factor in outsourced data systems.In this paper,we address this ...