A Novel Approach to Design Hybrid Vigenere Caesar Cipher Encryption with Genetic Algorithm (HVCEGA) for Data Security in Cloud Computing

Abstract

-In present scenario cloud computing is a large pool of easily and accessible virtualized resources, such as hardware, development platforms and software services. Cloud computing is a broad solution that delivers IT as a service. Cloud is an internet based technology which uses the Internet& central remote servers to support data and applications. In cloud computing, the data will be stored in data storage provided by cloud service providers. But still many business companies are not willing to adopt cloud computing technology due to lack of proper security control policy which lead to many vulnerability in cloud computing. Cryptography is mostly used technology to protect data within cloud environment. It is an art and science of hiding existing data from the external environment. It allows information to be sent in a secure form in such a manner that only authorized person is able to retrieve the original information. The paper presents a secure cloud data encryption technology which encrypts the data using Hybrid Algorithm (Vigenere and Caesar Cipher Encryption Algorithm and Genetic Algorithm-HVCEGA). A hybrid approach of more than one technique is more reliable and strong enough to provide security of data while processing and storage by using secured non-repeatable key (generated by one time pad). Computation time, avalanche effect and throughput are the parameters for which performance has been compared with existing encryption approach. The proposed HVCEGA algorithm provides more security by multi-layer encryption and reduces computation complexity using genetic algorithm.