Skipjack

• Official Sites
  • Skipjack and KEA Algorithms (Official cite @csrc.nist.gov)
  • DefenseLINK News: Encryption Formulas Declassified
• What is Skipjack? (RSA Labs FAQ -- Q80)
• Skipjack (A page by Weis & Lucks)
• Old Speculations
  • S-1 : An early version of SKIPJACK?
• An example implementation
• Cryptanalysis
  • Initial Observations on the SkipJack Encryption Algorithm (Eli Biham etc)
  • Cryptanalysis of Skipjack Reduced to 31 Rounds using Impossible Differentials (Eli Biham, Alex Biryukov, Adi Shamir)
• S-box difference tables for Skipjack
• Implementations
  • Skipjack Source Code
  • Skipjack implementations for Microchip PIC (Eric Smith)

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  Cryptology Pointers by Helger Lipmaa
  Got any suggestions or additional links? Mail to <helger.lipmaa>gmail.com
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  (C) Helger Lipmaa 1997-2009.