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State Convergence in the Initialisation of Stream Ciphers

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Information Security and Privacy (ACISP 2011)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 6812))

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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 keystream. 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.

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References

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Author information

Authors and Affiliations

  1. Information Security Institute, Queensland University of Technology, 126 Margaret Street, Brisbane, Qld 4001, Australia

    Sui-Guan Teo, Ali Al-Hamdan, Harry Bartlett, Leonie Simpson, Kenneth Koon-Ho Wong & Ed Dawson

  2. Faculty of Science and Technology, Queensland University of Technology, GPO Box 2434, Brisbane, Qld 4001, Australia

    Harry Bartlett & Leonie Simpson

Authors
  1. Sui-Guan Teo
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  2. Ali Al-Hamdan
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  3. Harry Bartlett
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  4. Leonie Simpson
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  5. Kenneth Koon-Ho Wong
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  6. Ed Dawson
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Editor information

Editors and Affiliations

  1. Department of Computer Science and Software Engineering, The University of Melbourne, 3010, Victoria, Australia

    Udaya Parampalli

  2. Qualcomm Incorporated, Suite 301, Level 3, 77 King Street, NSW 2000, Sydney, Australia

    Philip Hawkes

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© 2011 Springer-Verlag Berlin Heidelberg

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Teo, SG., Al-Hamdan, A., Bartlett, H., Simpson, L., Wong, K.KH., Dawson, E. (2011). State Convergence in the Initialisation of Stream Ciphers. In: Parampalli, U., Hawkes, P. (eds) Information Security and Privacy. ACISP 2011. Lecture Notes in Computer Science, vol 6812. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-22497-3_6

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  • DOI: https://doi.org/10.1007/978-3-642-22497-3_6

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-22496-6

  • Online ISBN: 978-3-642-22497-3

  • eBook Packages: Computer ScienceComputer Science (R0)

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