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International Workshop on Fast Software Encryption

FSE 1994: Fast Software Encryption pp 346–352Cite as

On Fibonacci keystream generators

Session 8: Recent Results

Part of the Lecture Notes in Computer Science book series (LNCS,volume 1008)

Abstract

A number of keystream generators have been proposed which are based on Fibonacci sequences, and at least one has been fielded. They are attractive in that they can use some of the security results from the theory of shift register based keystream generators, while running much more quickly in software. However, new designs bring new risks, and we show how a system proposed at last year's workshop, the Fibonacci Shrinking Genertor (FISH), can be broken by an opponent who knows a few thousand words of keystream. We then discuss how such attacks can be avoided, and present a new algorithm, PIKE, which is based on the A5 algorithm used in GSM telephones.

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Authors and Affiliations

  1. Computer Laboratory, Pembroke Street, CB2 3QG, Cambridge

    Ross Anderson

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  1. Ross Anderson
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    © 1995 Springer-Verlag Berlin Heidelberg

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    Anderson, R. (1995). On Fibonacci keystream generators. In: Preneel, B. (eds) Fast Software Encryption. FSE 1994. Lecture Notes in Computer Science, vol 1008. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-60590-8_26

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    • DOI: https://doi.org/10.1007/3-540-60590-8_26

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    • Publisher Name: Springer, Berlin, Heidelberg

    • Print ISBN: 978-3-540-60590-4

    • Online ISBN: 978-3-540-47809-6

    • eBook Packages: Springer Book Archive