A NEW CHAOTIC IMAGE ENCRYPTION USING PARAMETRIC SWITCHING BASED PERMUTATION AND DIFFUSION

Abstract

In this paper, a new loss-less symmetric image encryption using a permutation and diffusion structure is proposed. A new key generation process generates secondary keys that act as control parameter for permutation order and diffusion bit generator. The Image pixels are scrambled in bit level. Permutation order is generated using the parametric switching type that permutes the pixel in bit wise manner. In the diffusion stage the different keys were used to diffuse in each round. In the diffusion stage the image pixel bits are masked with the randomly generated binary sequence. Three chaotic systems employed to generate the secondary key, permutation order and diffusion bits. The simulation results prove the satisfactory level of security for image encryption.

Keywords

• Image Encryption
• Bit Wise Permutation
• Logistic Map
• Diffusion
• Tent Map
• Sine Map
• Parametric Switching