Secure Data Using Homomorphic Encryption Technique for Generating Shorter Cipher Text in Cloud Environment

Abstract

“Cloud Computing” is recent buzzword in the whole IT world. It is aimed to provide IT as a service to their cloud users’ on-demand basis with better features like availability, flexibility, reliability, security, scalability and many more. In security paradigm, there is several data security issues need to be addressed. For this, homomorphic encryption scheme is discovered where cipher-texts are stored as data in cloud storage instead of plaintexts (i.e. secure information). There is no need of plaintext except at time of encryption and decryption at sender side and receiver side respectively, as whatever computations done in algorithm is done on cipher-texts only. This paper mainly focuses on cipher-text data stored in database using modified homomorphic encryption mechanism. The data stored in database having small length and complex structure which is difficult for any analysts to decipher the data.