New Image Encryption Algorithm Based on Diffie-Hellman and Singular Value Decomposition

Abstract: With the fast progression of using images in many applications, it is important to protect the confidential image data from unauthorized access. In this paper we suggested a new way to encrypt image based on three main steps: the first one aims to scrambling the image values by using Fibonacci transform, while the second step focus on generating public and private key based on Diffie -Hellman Key Exchange, these keys used to encrypt the diagonal matrix which created by Singular Value Decomposition (SVD) in third step. Decryption is the inverse process of encryption. The results were promised and the decrypted image retrieved without loss any of its information. Encryption and decryption time was very trivial. The contribution of this paper is to encrypt image by using singular value decomposition with Diffie -Hellman Key Exchange. Paper novelty based on scrambling values based on Fibonacci transform and encryption image by using SVD.

Keywords: Encryption, Decryption, SVD, DH, Fibonacci.