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URN: urn:nbn:de:0030-drops-10387
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Biryukov, Alex

Block and Stream Ciphers and the Creatures in Between

07021.BiryukovAlex.Paper.1038.pdf (0.1 MB)


In this paper we define a notion of leak extraction from a block cipher. We demonstrate this new concept on an example of AES. A result is LEX: a simple AES-based stream cipher which is at least 2.5 times faster than AES both in software and in hardware.

BibTeX - Entry

  author =	{Alex Biryukov},
  title =	{Block and Stream Ciphers and the Creatures in Between},
  booktitle =	{Symmetric Cryptography},
  year =	{2007},
  editor =	{Eli Biham and Helena Handschuh and Stefan Lucks and Vincent Rijmen},
  number =	{07021},
  series =	{Dagstuhl Seminar Proceedings},
  ISSN =	{1862-4405},
  publisher =	{Internationales Begegnungs- und Forschungszentrum f{\"u}r Informatik (IBFI), Schloss Dagstuhl, Germany},
  address =	{Dagstuhl, Germany},
  URL =		{},
  annote =	{Keywords: Stream ciphers, block ciphers}

Keywords: Stream ciphers, block ciphers
Seminar: 07021 - Symmetric Cryptography
Issue Date: 2007
Date of publication: 06.06.2007

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