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State convergence in the initialisation of stream ciphers

Teo, Sui-Guan, Alhamdan, Ali, Bartlett, Harry, Simpson, Leonie R., Wong, Kenneth Koon-Ho, & Dawson, Edward (2011) State convergence in the initialisation of stream ciphers. In Parampalli, Udaya & Hawkes, Philip (Eds.) Information Security and Privacy, Springer Berlin / Heidelberg, RMIT University, Melbourne, Vic, pp. 75-88.

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Abstract

An initialisation process is a key component in modern stream cipher design. A well-designed initialisation process should ensure that each key-IV pair generates a different key stream. In this paper, we analyse two ciphers, A5/1 and Mixer, for which this does not happen due to state convergence. We show how the state convergence problem occurs and estimate the effective key-space in each case.

Impact and interest:

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ID Code: 43316
Item Type: Conference Paper
Additional Information: Published as part of Lecture Notes in Computer Science
Additional URLs:
Keywords: Stream Cipher, Initialisation, State Convergence, A5/1, Mixer
DOI: 10.1007/978-3-642-22497-3_6
Subjects: Australian and New Zealand Standard Research Classification > INFORMATION AND COMPUTING SCIENCES (080000) > COMPUTER SOFTWARE (080300) > Computer System Security (080303)
Divisions: Past > Schools > Computer Science
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Past > Institutes > Information Security Institute
Past > Schools > Mathematical Sciences
Copyright Owner: Copyright 2011 Springer
Copyright Statement: The original publication is available at SpringerLink http://www.springerlink.com
Deposited On: 15 Jul 2011 08:19
Last Modified: 17 Feb 2012 03:40

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