SEQUENTIAL ENCRYPTION FOR MULTIPLE CHUNKS OF DATA IN CLOUD ENVIRONMENT

Abstract

Cloud computing is a next generation computer paradigm for IT firm. The vital service of cloud computing is cloud storage, that permits owner to move data from their native computing systems to the cloud. Storing our confidential data to a public cloud is a challenging issue in cloud computing because of unauthorized access to the data. The proposed algorithm splits data and encrypts it using two different algorithms to improve the security level of the confidential data than the various techniques of existing encryption algorithms. The data is first partitioned into multiple chunks and then efficient encryption algorithms such as RSA algorithm and Blowfish algorithm is used for data encryption. It further proposes an efficient data access using indexing technique to retrieve the confidential data from cloud. Finally, it needs to decrypt multiple chunks to get actual data from public cloud. The objectives of the proposed techniques are to store confidential data in public cloud and ensure more security than the existing techniques.