Distinguishing Attacks on SOBER-t16 and t32

  • Authors:
  • Patrik Ekdahl;Thomas Johansson

  • Affiliations:
  • -;-

  • Venue:
  • FSE '02 Revised Papers from the 9th International Workshop on Fast Software Encryption
  • Year:
  • 2002

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Abstract

Two ways of mounting distinguishing attacks on two similar stream ciphers, SOBER-t16 and SOBER-t32, are proposed. It results in distinguishing attacks faster than exhaustive key search on full SOBER- t16 and on SOBER-t32 without stuttering.