A Secure, Robust and Effective Cryptoscheme using Data Obfuscation of Entity Detection and Replacement & Encryption for Ensuring Data Privacy in Private Cloud

Abstract

Cloud has been emerging, popular and very demanding technology now a day. Cloud has got wide popularity with its sophisticated features such as internet access, more storage, easy setup, automatic updates, low cost and resource provisioning based on "pay as you go" policy. In spite of advantages, security is considered to be more important and drew the attention of many researchers. The data storage is becoming an indispensable measurement in cloud and most of the times cloud does not guarantee that information/data that has been stored is secured from illegitimate access. Many researchers are working to ensure information security in cloud but unfortunately they do not provide adequate security. This paper is aiming to propose an efficient algorithm with obfuscation and cryptography for unstructured data. The algorithm works to preserve confidentiality of data stored in cloud at two levels. At the fist level the algorithm obfuscate the document by replacing the key words (obfuscation), and at the second level obfuscated document is encrypted using traditional RSA algorithm for better security. Experimental results shows that the proposed algorithm yields good results.