Image Encryption using RSA Algorithm

Abstract

Today, it is necessary that effective encryption and decryption be utilized when transmitting data via the internet from one point to another in order to guard against unauthorized access. Image cryptography is a particular type of encryption technique that uses a key value to encrypt and decrypt the original message by hiding data within an image. There are very few algorithms, which makes computing complex, and it is challenging to crack a code to discover the original message. In this paper, the modified RSA encryption technique is used to transmit the image to the intended receiver with the highest level of confidentiality and secrecy. The modified RSA cryptosystem has been applied to both grey and color images using MATLAB software. Because of the complexity of factoring problem that converts positive integer into a product of two primes. Moreover, decrypting any encrypted images necessitates calculating a huge integer made up of the product of numerous large primes. The proposed technique was applied to encrypt images as the number of primes increases, which is more secure than the original RSA cryptosystem. The results shows that, using the modified RSA cryptosystem is more resistant to any attacks in the transmission of images in all agencies in the information technology era.