Image Encryption Algorithm Based on Henon Map and High Dimensional Matrix Transformation
Shu Qing · Microcomputer Information · 2010
A chaotic encryption algorithm based on henon map and high dimensional block diagonal matrix transformation is proposed.Under given initial cipherkey, two permutation matrices and some two dimensional invertible matrices in a ring are constructed by the henon map.With the help of two types of translation transformation, the permutation matrices are adopted to scramble the plaintext image;Furthermore, a high dimensional block diagonal invertible matrix is generated by above two dimensional invertible matrices, then the scrambling image is encrypted again by high dimensional matrix transformation.Experimental results show the algorithm is easy to realize and possesses the advantages of high-performance characteristic of encryption, high sensitivity to key or plaintext image and high security.