Image Compression-Encryption Scheme Based on SPIHT Coding and 2D Beta Chaotic Map

In this paper, a new image compression-encryption algorithm is proposed. Compression is performed using the Set partitioning in hierarchical trees algorithm. After compression, the image is encrypted using the new two-dimensional Beta Chaotic map(2D-BCM). The encryption process involves permutation, diffusion, and substitution stage. According to the experimental results and security analysis, the compression-encryption algorithm has high sensitivity and security. Thus, the algorithm is able to resist chosen plain text attacks.