期刊
JOURNAL OF SYSTEMS AND SOFTWARE
卷 81, 期 7, 页码 1130-1143出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jss.2007.07.037
关键词
image encryption; chaotic cryptography; RCES/RSES; cryptanalysis; known-plaintext attack; chosen-plaintext attack; CKBA
Recently, a chaos-based image encryption scheme called RCES (also called RSES) was proposed. This paper analyses the security of RCES, and points out that it is insecure against the known/chosen-plaintext attacks: the number of required known/chosen plain-images is only one or two to succeed an attack. In addition, the security of RCES against the brute-force attack was overestimated. Both theoretical and experimental analyses are given to show the performance of the suggested known/chosen-plaintext attacks. The insecurity of RCES is due to its special design, which makes it a typical example of insecure image encryption schemes. A number of lessons are drawn from the reported cryptanalysis of RCES, consequently suggesting some common principles for ensuring a high level of security of an image encryption scheme. (c) 2007 Elsevier Inc. All rights reserved.
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