Paper 2004/289

Fault attack on the DVB Common Scrambling Algorithm

Kai Wirt

Abstract

The Common Scrambling Algorithm (CSA) is used to encrypt streams of video data in the Digital Video Broadcasting (DVB) system. The algorithm uses a combination of a stream and a block cipher, apparently for a larger security margin. However these two algorithms share a common key. In this paper we present a fault attack on the block cipher which can be launched without regarding the stream cipher part. This attack allows us to reconstruct the common key and thus breaks the complete Algorithm.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
block ciphercryptanalysisfault attackdvbpaytv
Contact author(s)
wirt @ informatik tu-darmstadt de
History
2004-11-08: revised
2004-11-05: received
See all versions
Short URL
https://ia.cr/2004/289
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2004/289,
      author = {Kai Wirt},
      title = {Fault attack on the DVB Common Scrambling Algorithm},
      howpublished = {Cryptology ePrint Archive, Paper 2004/289},
      year = {2004},
      note = {\url{https://eprint.iacr.org/2004/289}},
      url = {https://eprint.iacr.org/2004/289}
}
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