Substitution-Diffusion Based Image Cipher Using Chaotic Standard Map and 3D Cat Map

Abstract

This paper proposes a substitution-diffusion based image cipher using chaotic standard maps and 3D cat map. The first stage consists of stretches of plain image using arnold cat map, XOR-ing with synthetic image which is generated using chaotic standards map and total number of rounds are controlled by secret key and plain image. Then in second stage further diffusion and confusion is obtained in the horizontal and vertical pixels by mixing the properties of the horizontally and vertically adjacent pixels, respectively, with XORing by generating an intermediate chaotic key stream (CKS)image in a novel manner with the help of chaotic standard map and total numbers of rounds are controlled by secret key and plain image. The performance is done such as entropy analysis, difference analysis, statistical analysis, key sensitivity analysis,, key space analysis, speed analysis. This proposed technique is trade of between security and time. The experimental results illustrate that performance of this is highly secured.