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An Analysis of the Hermes8 Stream Ciphers

Babbage, Steve, Cid, Carlos, Pramstaller, Norbert, & Raddum, Havard (2007) An Analysis of the Hermes8 Stream Ciphers. In Pieprzyk, Josef, Ghodosi, Hossein, & Dawson, Edward P. (Eds.) 12th Australasian Conference, ACISP 2007: Information Security and Privacy, July 2-4, 2007, Townsville, Australia.

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Abstract

Hermes8 [6,7] is one of the stream ciphers submitted to the ECRYPT Stream Cipher Project (eSTREAM [3]). In this paper we present an analysis of the Hermes8 stream ciphers. In particular, we show an attack on the latest version of the cipher (Hermes8F), which requires very few known keystream bytes and recovers the cipher secret key in less than a second on a normal PC. Furthermore, we make some remarks on the cipher's key schedule and discuss some properties of ciphers with similar algebraic structure to Hermes8.

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ID Code: 15569
Item Type: Conference Paper
Keywords: Hermes8, Stream Cipher, Cryptanalysis
DOI: 10.1007/978-3-540-73458-1_1
ISBN: 9783540734574
ISSN: 1611-3349
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > DATA FORMAT (080400) > Data Encryption (080402)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
Copyright Owner: Copyright 2007 Springer
Copyright Statement: This is the author-version of the work. Conference proceedings published, by Springer Verlag, will be available via SpringerLink. http://www.springer.de/comp/lncs/ Lecture Notes in Computer Science
Deposited On: 11 Nov 2008
Last Modified: 03 Mar 2011 15:46

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