Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11232
Title: Cryptanalyzing an encryption scheme based on blind source separation
Authors: Li, S
Li, C
Lo, KT 
Chen, G
Issue Date: 2008
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on circuits and systems. I, Regular papers, 2008, v. 55, no. 4, p. 1055-1063 How to cite?
Journal: IEEE transactions on circuits and systems. I, Regular papers 
Abstract: Recently, there was a proposal of using the underdetermined blind source separation (BSS) principle to design image and speech encryption. In this paper, we report a cryptanalysis of this BSS-based encryption scheme and point out that it is not secure against known-/chosen-plaintext attack and chosen-ciphertext attack. In addition, we discuss some other security defects of the schemes: (1) it has a low sensitivity to part of the key and to the plaintext; (2) it is weak against a ciphertext-only differential attack; and (3) a divide-and-conquer (DAC) attack can be used to break part of the key. We finally analyze the role of BSS in this approach towards cryptographically secure ciphers.
URI: http://hdl.handle.net/10397/11232
ISSN: 1549-8328
EISSN: 1558-0806
DOI: 10.1109/TCSI.2008.916540
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