Secure Access to Outsourced Databases

Data security is one of the fundamental security requirement for outsourced databases in a cloud computing environment. Existing solutions usually suffer from problems such as information leakage, key management, revocation handling and user authentication. In this paper to overcome these security challenges, the proposed scheme uses a modified row- based encryption technique where each row of the database is encrypted using a separate key. The proposed scheme also uses client side memory, and selective encryption to increase performance of the system. The proposed approach also uses a modified Diffie-Hellman key exchange algorithm for establishing secure communication between cloud service provider and the user, inhibiting malicious outsiders.