Image encryption/decryption algorithm based on standard chaos map
Changsheng Jiang · Ha'erbin gongye daxue xuebao · 2006
A new image encryption/decryption algorithm is designed via a discrete chaos map because a discrete map is easily created,sensitive to initial value and processes the characteristics of white noise.Permutation of an image is realized by a network which is similar to a Feistel network——a standard map.Substitution and diffusion of grey are carried out by designing secrete keys using Logistic chaos dynamics.The analysis results show that large enough secrets keys of algorithm is benefit to once key once encryption,perfect statistical characteristics make it defend the attack of knowing cryptography and sensitivity to plaintext make it defend the difference attack.The proposed algorithm is easily realized and encryption efficiency is high.