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Cryptanalysis of a new signal security system for multimedia data transmission

Li, CQ, Li, SJ, Chen, GR, Chen, G and Hu, L (2005) Cryptanalysis of a new signal security system for multimedia data transmission EURASIP Journal on Applied Signal Processing, 8. 1277 - 1288. ISSN 1110-8657

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Abstract

Recently, a new signal security system called TDCEA (two-dimensional circulation encryption algorithm) was proposed for real-time multimedia data transmission. This paper gives a comprehensive analysis on the security of TDCEA. The following security problems are found: (1) there exist some essential security defects in TDCEA; (2) two known-plaintext attacks can break TDCEA; (3) the chosen-plaintext and chosen-ciphertext versions of the aforementioned two known-plaintext attacks can break TDCEA even with a smaller complexity and a better performance. Some experiments are given to show the security defects of TDCEA and the feasibility of the proposed known-plaintext attacks. As a conclusion, TDCEA is not suitable for applications that require a high level of security.

Item Type: Article
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Computing Science
Depositing User: Symplectic Elements
Date Deposited: 29 Jun 2012 11:01
Last Modified: 23 Sep 2013 19:26
URI: http://epubs.surrey.ac.uk/id/eprint/532628

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