A Chaos Image Encryption Algorithm Based on Binary Sequence and Baker Mapping

based on the chaotic binary sequence and the baker mapping, this article puts forward an image encryption algorithm combined image scrambling and diffusion. Firstly, we use an improved baker mapping algorithm to scramble the primary image, which expands the range of the mapping to a non-square image. Then, we encrypts the scrambled image through binary sequence, so that the values have been greatly changed, and the relevance with around as well. After several times of iteration, we get an encrypted image. Through the simulation analysis, the algorithm gets an ideal encrypted image and restores the image correctly. The algorithm has a large key space, it is hard to be decrypted and is easy to be carried out.