Improvement of a Remote Data Possession Checking Protocol from Algebraic Signatures
Cloud storage allows cloud users to enjoy the on-demand and high quality data storage services without the burden of local data storage and maintenance.However, the cloud servers are not necessarily fully trusted.As a consequence, whether the data stored on the cloud are intact becomes a major concern.To solve this challenging problem, recently, Chen proposed a remote data possession checking (RDPC) pro tocol using algebraic signatures.It achieves many desirable features such as high efficiency, small challenges and responses, non-block verification.In this paper, we find that the protocol is vulnerable to replay attack and deletion attack launched by a dishonest server.Specifically, the server can either fool the user to believe that the data is well maintained but ac tually only a proof of the challenge is stored, or can generate a valid response in the integrity checking process after deleting the entire file of the user.We then propose an improved scheme to fix the security flaws of the original protocol without losing the desirable features of the original protocol.
Yong Yu Jianbing Ni Jian Ren Wei WU Lanxiang Chen Qi Xia
School of Computer Science and Engineering,University of Electronic Science and Technology of China, School of Computer Science and Engineering,University of Electronic Science and Technology of China, Department of Electrical and Computer Engineering,Michigan State University,MI,4882,USA School of Mathematics and Computer Science,Fujian Normal University,Fuzhou,350007,China
国际会议
福州
英文
359-372
2014-05-05（万方平台首次上网日期，不代表论文的发表时间）