Cloud has been emerging, popular and very demanding technology now a day. Cloud has got wide popularity with its sophisticated features. The primary features of cloud include internet access, more storage, easy setup, automatic updates, and 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 because it is not guaranteed in an open cloud. The data storage is becoming an indispensable measurement in cloud and most of the times cloud does not guarantee that data that has been stored is secured from illegitimate access. Many researchers are working to ensure data security in the cloud but unfortunately they do not provide adequate security to data. This paper is aiming to propose a secure hybrid scheme with obfuscation and cryptography to ensure the privacy of data shared in public cloud. Experimental results show that the proposed scheme yields good results.

Cloud has been rising, renown, and extremely demanding innovation now a day. Cloud has wide ubiquity with its advanced features, like web access, more stockpiling, easy setup, programmed refreshes, low cost, and resource provisioning on a rent basis. Disregarding many advantages, security is viewed as increasingly significant and drew the consideration of numerous researchers. The information storage is drastically increasing, and there are many occasions that cloud doesn't ensure that data/information that has been placed in the cloud is secured from unauthorized access. Many experts are attempting to guarantee data security in the cloud, yet tragically they don't give satisfactory results. Hence we attempted to propose an effective crypto-scheme with obfuscation and cryptography for unstructured information. The scheme attempts to safeguard the secrecy of information at two phases. In the first phase, it obfuscates the file by supplanting the keywords (obfuscation), and at the subsequent phase, the obfuscated file is encoded by using the conventional RSA (Rivest Shamir Adleman) encryption algorithm for high security. Investigation results show that the proposed mechanism yields great outcomes.

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