Discrete Chaotic Encryption and Decryption of Digital Images

According to the characteristics of discrete chaotic sequences and basic encrypting principles of information, and organically combining some inherent characteristics of digital images, with a view of high efficiency and perfect effect for encryption and decryption of digital images, meanwhile, and considering the high security of the encrypting algorithm, a discrete chaotic encrypting algorithm of digital images has been studied, and its working performance has also been briefly discussed and analyzed according to experiments of image encryption and decryption. In order to effectively realize digital image encryption and decryption, two one-dimensional discrete Chebyshev chaotic sequences are used for row and column scrambling of the pixels of original and encrypted digital images. Experiment results shows that the encrypting algorithm is reasonably feasible and effective, and can ensure encrypted images sufficient security in their storage and transmitting processes.