Paper 2007/339
On the security of a class of image encryption schemes
Chengqing Li and Guanrong Chen
Abstract
Recently four chaos-based image encryption schemes were proposed.
Essentially, the four schemes can be classified into one class,
which is composed of two basic parts: permutation of position and
diffusion of pixel value with the same cipher-text feedback
function. The operations involved in the two basic parts are
determined by a pseudo random number sequence (PRNS) generated from
iterating a chaotic dynamic system. According to the security
requirement, the two basic parts are performed alternatively for
some rounds. Although the designers claimed that the schemes are of
high quality, we found the following security problems: 1) the
schemes are not sensitive to the changes of plain-images; 2) the
schemes are not sensitive to the changes of the key streams
generated by any secret key; 3) there exists a serious flaw of the
diffusion function; 4) the schemes can be broken with no more than
Metadata
- Available format(s)
-
PDF
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- cryptanalysis
- Contact author(s)
- swiftsheep @ hotmail com
- History
- 2008-01-04: last of 2 revisions
- 2007-08-29: received
- See all versions
- Short URL
- https://ia.cr/2007/339
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2007/339,
author = {Chengqing Li and Guanrong Chen},
title = {On the security of a class of image encryption schemes},
howpublished = {Cryptology {ePrint} Archive, Paper 2007/339},
year = {2007},
url = {https://eprint.iacr.org/2007/339}
}
