An Image Encryption Algorithm Using Chaos-based Weight Variation of Huffman Tree
Li Tan · Journal of Chinese Computer Systems · 2011
Using chaos-based weight variation of Huffman tree,an image/video encryption algorithm is proposed in this paper.In the process of the entropy coding,DC coefficients are encrypted by the weight variation of Huffman tree with the double Logistic chaos and AC coefficients are encrypted by the indexes of codeword.The security,complexity and compression ration of the algorithm are analyzed.Simulation results show that this algorithm has no impact on the compression efficiency and has low complexity、high security and good real-time property.Therefore,it is suitable for real-time image on the network.