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Journal of Electronic Imaging

Cryptanalysis of an image encryption scheme
Author(s): Shujun Li; Chengqing Li; Kwok-Tung Lo; Guanrong Chen
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Paper Abstract

We present cryptanalysis of an image encryption scheme, which is based on the base-switching (BS) lossless compression algorithm. The following conclusions are reached: 1. the size of the key space, i.e., the security against brute-force attacks, was greatly overestimated by the designers; and 2. the scheme is not secure against known/chosen-plaintext/ciphertext attacks. A real example is given to show the feasibility of a proposed chosen-plaintext attack. In addition, some other minor problems of the joint compression-encryption scheme are also pointed out.

Paper Details

Date Published: 1 October 2006
PDF: 13 pages
J. Electron. Imag. 15(4) 043012 doi: 10.1117/1.2360697
Published in: Journal of Electronic Imaging Volume 15, Issue 4
Show Author Affiliations
Shujun Li, The Hong Kong Polytechnic Univ. (China)
Chengqing Li, City Univ. of Hong Kong (Hong Kong China)
Kwok-Tung Lo, The Hong Kong Polytechnic Univ. (Hong Kong China)
Guanrong Chen, Hong Kong Polytechnic Univ. (China)

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