Color Image Encryption Based on LSS-Type Coupled Mapped Lattice

To protect the security of image information in storage or transmission. We present a color image encryption algorithm based on the image features, which are unique to each other. Firstly, 12 pseudo-random sequences are generated based on The Logistic Sine (LSS) coupled mapped lattice. One group of pseudo-random sequences is selected to group the remaining 11 groups of sequences randomly, of which eight groups of sequence data realize the scrambling operation of the bit-level image, and the other three groups learn the image diffusion operation to obtain the encrypted image. The experimental results show that the image encryption algorithm proposed in this paper has ample key space. The number of pixel change rates (NPCR) and unified average change intensity (UACI) are 99.62% and 33.57%, respectively, close to the ideal value. The proposed algorithm effectively resists standard data statistics, cutting, and noise attacks.