Query based computations on encrypted data through homomorphic encryption in cloud computing security

Abstract

In this paper a high security encrypted data is proposed using “somewhat” and “fully homomorphic” encryption methods. Cloud service providers (CSP) give privacy and security to the cloud users through cryptographic encryption algorithms. By using query any user can access the data from the cloud servers through decryption. But frequent decryption of cipher text may lead to exploit the integrity and authentication. To provide security to the encrypted data with computations, a secure encryption method called homomorphic encryption which provides calculations on encrypted data without decrypt the cipher text and enhance the performance of the cloud services.