LAUSR

This paper proposes a novel image encryption algorithm based on chaos and DNA planes operations by utilizing one time pad. The plain image is firstly shuffled by means of “interweaving of ranks”. Next, we divided the permutated image into four sub-images with same size, and encode one of them by DNA rules. Decompose encoded image into four “DNA planes”, which means that every single pixel can compose four DNA units, for all pixels, four planes can be obtained. After that, shuffle each DNA plane respectively, decode these DNA planes and combine them back to a single quarter image. Finally, diffuse other three parts using resultant image from last step. Diffusion operations are achieved by exclusive or operation. Then, the four sub-images are combined into one image, which is the cipher image. In combination with the SHA3–512 hash, it is used to resist the basic requirements of the typical attack of the algorithm, and establishes the relationship between the initial value of the chaotic system and the plaintext image. Experimental results and numerical analysis show that the proposed algorithm can resist typical attacks, such as chosen-plaintext attack, et al., and has better character of security. The proposed algorithm can be used in image encryption.