Abstract
The Common Scrambling Algorithm (CSA) is used to encrypt streams of video data in the Digital Video Broadcasting (DVB) system. The algorithm cascades a stream and a block cipher, apparently for a larger security margin. In this paper we set out to analyze the block cipher and the stream cipher separately and give an overview of how they interact with each other. We present a practical attack on the stream cipher. Research on the block cipher so far indicates it to be resistant against linear and algebraic cryptanalysis as well as simple slide attacks.
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Bewick, Simon (1998). Descrambling DVB data according to ETSI common scrambling specification. UK Patent Applications GB2322994A / GB2322995A.
Biryukov, Alex and Wagner, David (1999). Slide attacks. In Knudsen, Lars, editor, Fast Software Encryption: 6th International Workshop, FSE'99, Rome, Italy, March 1999. Proceedings, volume 1663 of Lecture Notes in Computer Science, pages 245-. Springer-Verlag Heidelberg.
European Telecommunications Standards Institute (1996). ETSI Technical Report 289: Support for use of scrambling and Conditional Access (CA) within digital broadcasting systems.
Golomb, Solomon W. (1967). Shift Register Sequences. Holden-Day San Francisco.
Pseudonymous authors (2003). CSA — known facts and speculations, http://csa.irde.to.
Rueppel, Rainer A. (1986). Analysis and design of stream ciphers. Springer-Verlag New York, Inc.
Watts, Davies Donald, Ashley, Rix Simon Paul, and Jacobus, Kuehn Gideon (1998). System and apparatus for blockwise encryption and decryption of data. US Patent Application US5799089.
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© 2005 International Federation for Information Processing
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Weinmann, RP., Wirt, K. (2005). Analysis of the DVB Common Scrambling Algorithm. In: Chadwick, D., Preneel, B. (eds) Communications and Multimedia Security. IFIP — The International Federation for Information Processing, vol 175. Springer, Boston, MA. https://doi.org/10.1007/0-387-24486-7_15
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DOI: https://doi.org/10.1007/0-387-24486-7_15
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-387-24485-3
Online ISBN: 978-0-387-24486-0
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