Paper Title
A Novel Approach to RSA Cryptosystem using Hybrid Cryptography Algorithm (HCA) and Enhanced-HCA (EHCA)
Abstract
Network security refers to three core elements: Confidentiality, Integrity and Availability. Confidentiality is
achieved through Cryptography. One of the most popular asymmetric cryptography techniques is RSA Cryptosystem-A suite
of crypto- graphic algorithms: one for key generation, one for encryption, and one for decryption. This paper presents a new
Hybrid Cryptography Algorithm (HCA) for RSA cryptosystem and Enhanced-HCA (EHCA), to further decrease the
decryption time. In HCA computation of public key (e) and private key (d) depends on the value of n (a product of four
prime numbers) and the calculation of e and d involves the computation of some more intermediate factors making the
computations more complex, thus increasing the security. To substantiate these facts the proposed HCA and EHCA
cryptosystems have been compared with conventional RSA and ERSA algorithms.
Keywords - Cryptosystem, Decryption, Encryption, Prime Number, Private Key, Public Key, RSA Algorithm