@inproceedings{32b40b9105e9451f8e734ec30164b542,
title = "Improving security of an image encryption algorithm based on chaotic circular shift",
abstract = "An image encryption algorithm based on chaotic circular bit shift is proposed recently. This paper analyses the security of this algorithm and point out that the key space is not as large as they alleged and the algorithm can not resist chosenplaintext attack or difference attack. The amount of chosenplaintexts to carry out an attack is very few. This paper also introduces two methods to improve its security by changing chaotic sequences generators, altering orders of permutation and substitution, and applying feedback link mode. The improved algorithm has variable key space and has very good avalanche effect to resist chosen-plaintext attacks, chosen-ciphertext attacks, or difference attacks. The computation cost of improved algorithm is very low.",
keywords = "Attack, Chaotic-based encryption, Circular bit shift, Image encryption, Security",
author = "Weihai Li and Yuan Yuan",
year = "2009",
doi = "10.1109/ICSMC.2009.5346875",
language = "英语",
isbn = "9781424427949",
series = "Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics",
pages = "3694--3698",
booktitle = "Proceedings 2009 IEEE International Conference on Systems, Man and Cybernetics, SMC 2009",
note = "2009 IEEE International Conference on Systems, Man and Cybernetics, SMC 2009 ; Conference date: 11-10-2009 Through 14-10-2009",
}