International Association for Cryptologic Research

International Association
for Cryptologic Research


Paper: The (a, b)-Shrinking Generator

Ali Adel Kanso
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Abstract: A new construction of a pseudorandom generator based on a simple combination of two LFSRs is introduced. This construction allows users to generate a large family of sequences using the same initial states and the same characteristic feedback polynomials of the two combined LFSRs. The construction is related to the so-called shrinking generator that is a special case of this construction. The construction has attractive properties such as exponential period, exponential linear complexity, good statistical properties and security against correlation attacks. All these properties make it a suitable crypto-generator for stream cipher applications.
  title={The (a, b)-Shrinking Generator},
  booktitle={IACR Eprint archive},
  keywords={secret-key cryptography / Linear feedback shift registers, Stream Ciphers, Clock-controlled registers, and Shrinking generator.},
  note={ 12088 received 15 Jul 2002, withdrawn 5 Feb 2003},
  author={Ali Adel Kanso},