Securing Data In Cloud Computing Using Paillier Algorithm

Abstract

Now a days, cloud computing is one of the dominant methods used forproviding computing infrastructure for Internet services, Cloud computing offerscomputing and software services on demand by connecting to computing resources andaccess to IT managed services with an ease. This flexibility of cloud based servicescomes with risk of security and privacy of user’s data. Client privacy is a tentative issueas all clients do not have the same demands regarding privacy. In this thesis, the proposed system provides the cloud data security for private cloud computing environment usingthe homomorphic encryption technique. This technique provides functionality to performoperations on encrypted data without using the private key and without decrypting thatdata. After decrypting the result of this operation, it is the same as if we carried out thecalculation on the plain data. This major strength of homomorphic encryption allows thecloud service providers to perform operations on encrypted client data withoutcompromising on the client data privacy.