Towards Making Luby-Rackoff Ciphers Optimal and Practical

  • Authors:
  • Sarvar Patel;Zulfikar Ramzan;Ganapathy S. Sundaram

  • Affiliations:
  • -;-;-

  • Venue:
  • FSE '99 Proceedings of the 6th International Workshop on Fast Software Encryption
  • Year:
  • 1999

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Abstract

We provide new constructions for Luby-Rackoff block ciphers which are efficient in terms of computations and key material used. Next, we show that we can make some security guarantees for Luby-Rackoff block ciphers under much weaker and more practical assumptions about the underlying function; namely, that the underlying function is a secure Message Authentication Code. Finally, we provide a SHA-1 based example block cipher called Sha-zam.