AN INNOVATIVE APPROACH TO KEY EXCHANGE: DUAL SECURED DIFFIE -HELLMAN WITH RSA AND IMPROVED AFFINE CIPHER INTEGRATIONS

Abstract

The pace of technological change is sprouting at an incomparable rate, with emerging technologies such as Artificial Intelligence, Internet of Things, Block chain transforming industries and reforming the way we live now-a-days. However, this rapid pace of change presents significant challenges for data security. The role of data security ensure the confidentiality, integrity and authenticity while data in transit and data at rest. Cryptography is the science to refer as the secured transmission of messages amongst the sender and the intended receiver. In cryptography, there are two kind of algorithms employed in which generates key concepts in dealing with security protection between two parties over an internet.  On the side of symmetric algorithm, it is possible to generate only one secret or private key to secure the message between two parties where as in the side of asymmetric algorithm, it would generate two keys referred as public key for encryption process as well as private key for decryption process to strengthen the security protection of message transmission.  In these aspects, RSA algorithm is integrated with Diffie –Hellman Key Exchange protocol to prevent Man-in the Middle attack.  However, the analysis of RSA cryptography, it has a vulnerability in small number prime factorization. Consequently, this paper proposes a model of implementation of Diffie-Hellman Key Exchange protocol is integrated with RSA and improved Affine Cipher to afford greater strength to the key.