Key-Schedule Cryptoanalysis of IDEA, G-DES, GOST, SAFER, and Triple-DES

  • Authors:
  • John Kelsey;Bruce Schneier;David Wagner

  • Affiliations:
  • -;-;-

  • Venue:
  • CRYPTO '96 Proceedings of the 16th Annual International Cryptology Conference on Advances in Cryptology
  • Year:
  • 1996

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Abstract

We present new athcks on key schedules of block ciphers. These attacks are based on the principles of related-key differential cryptanalysis: attacks that allow both keys and plainkxts t,o be rhoscn with specific diflercnccs. We show how these attacks can be exploited in actual protocols and cryptanalyze the key schedules of a variety of algorithms, including three-key Iriplc-DES.