Encryption algorithm using dual modulus

Abstract

Dual modulus play important role in increasing the complexity of decomposing values into factors as compared to single modulus. This paper is based on RSA algorithm. Proposed encryption algorithm is more secure as compared to RSA algorithm since it uses dual modulus. This algorithm uses double encryption and decryption using double private and public keys to provide security against Brute-force attacks. Therefore, if an intruder detects a single key of cryptosystem even then it is not possible to decrypt the message. The basic motivation behind this paper is that in conventional RSA algorithm if we can factor modulus (n) into its prime numbers then we can generate private key. So in order to remove this weakness we can use dual modulus and improve the security of the system substantially.