An Image Encryption Algorithm Based on Chaotic Sequences

Abstract

Chaotic sequences have several good properties,such as the ease of the generation,their sensitive dependence on its initial parameters.Because of these good properties,chaotic system can be used to image encryption.In the paper,an image encryption algorithm is proposed based on chaotic sequences and image scrambling.As the initial parameter is the key,the chaotic sequences can be generated based on key.Then according to discrete sequences,the RGB value of pixel is modified randomly.Two directions XOR scrambling algorithm based on DES is used to scramble the image.Simulation results prove the algorithm possesses the feature of low computational complexity,dependence on its initial parameters and high security.