A hierarchical access control scheme in cloud using HHECC

Abstract

This study proposes a novel access control scheme which is implemented based on a Hierarchical and Hybrid Elliptic Curve Cryptography (HHECC) to fulfill the efficiency and security requirements in Cloud. Cloud is a state-of-the-art technology to build a storage platform for data backup, resource sharing, file synchronization, etc. Since accessed by various users, the Cloud storage services should enhance its security facility for access control, according to the confidential protocol and privacy policy. To satisfy these requirements, we present the hierarchy feature of the scheme is achieved by an one-way hash function on the level key, merged by the hybrid feature which denotes the combination of one-way hash, Advanced Encryption Standard (AES) and ECC for the fine grained access control. The theoretical security proof of the whole scheme is figured out through logic induction with the basis on the security of ECC. The simulation experiments' results show that in comparison with RSA, HHECC facilitates to achieve much securer performance for hierarchical access control with higher efficiency for the encryption and decryption of Cloud data. © 2010 Asian Network for Scientific Information.