Abstract
A5/1 is the stream cipher used in most European countries in order to ensure privacy of conversations on GSM mobile phones. In this paper we describe an attack on this cipher with total work complexity 239.91 of A5/1 clockings, given 220.8 known plaintext. This is the best known result with respect to the total work complexity.
This work was supported by the European Union fund IST-1999-12324 - NESSIE and by the Technion’s Chais’ Excellence Program.
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Biham, E., Dunkelman, O. (2000). Cryptanalysis of the A5/1 GSM Stream Cipher. In: Roy, B., Okamoto, E. (eds) Progress in Cryptology —INDOCRYPT 2000. INDOCRYPT 2000. Lecture Notes in Computer Science, vol 1977. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44495-5_5
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DOI: https://doi.org/10.1007/3-540-44495-5_5
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