An Hybrid Approach for Efficient Data Encryption and Decryption for Data Security in Cloud Computing

Abstract

In this paper, a hybrid encryption is proposed using combination of two asymmetric schemes. The existing schemes are lacking in encrypting large data files, there time complexity may worsen with size. In this work the homomorphic algorithm is used along with RSA, to enhance the encryption and decryption time. The evaluation study has been done between AES, 3DES, DES and proposed algorithm on basis of their time complexities. Our proposed work has very least complexity for both encryption and decryption. Proposed scheme is also highly secure as it involves 2 encryption and decryption rounds.