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Block and Stream Ciphers and the Creatures in Between

Authors: Alex Biryukov

Published in: Dagstuhl Seminar Proceedings, Volume 7021, Symmetric Cryptography (2007)

Abstract

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.

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Alex Biryukov. Block and Stream Ciphers and the Creatures in Between. In Symmetric Cryptography. Dagstuhl Seminar Proceedings, Volume 7021, pp. 1-9, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{biryukov:DagSemProc.07021.5,
  author =	{Biryukov, Alex},
  title =	{{Block and Stream Ciphers and the Creatures in Between}},
  booktitle =	{Symmetric Cryptography},
  pages =	{1--9},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7021},
  editor =	{Eli Biham and Helena Handschuh and Stefan Lucks and Vincent Rijmen},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.07021.5},
  URN =		{urn:nbn:de:0030-drops-10387},
  doi =		{10.4230/DagSemProc.07021.5},
  annote =	{Keywords: Stream ciphers, block ciphers}
}

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Block and Stream Ciphers and the Creatures in Between

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