A secure storage system over cloud storage environment

Nowadays, data has been increasingly shared among different users inside the cloud storage systems, instead of being owned by any single private user, which makes an ordinary user usually does not have the control permission over the whole system, thus hard to secure data storage or data sharing of his own files. To solve this problem, this paper proposes a new secure cloud storage system architecture. Based on this architecture, this paper designs and implements a secure cloud storage system called Corslet. Corslet can run directly on deployed underlying cloud storage systems without modification, while bringing end-to-end confidentiality and integrity as well as efficient access control for user data. For individual users, Corslet is easy to use, the only thing to keep locally is their certifications. The experiments and standard benchmark results show that Corslet over NFSv4 cluster brings acceptable I/O throughput reduction which is less than 5%, proving that Corslet can provide enhanced security for user data while maintaining acceptable performance. ©, 2015, Science Press. All right reserved.