Quellen

• Ross Anderson, Eli Biham, Lars Knudsen: 'Serpent: A Proposal for the Advanced Encryption Standard'
  http://www.cl.cam.ac.uk/ftp/users/rja14/serpent.pdf
• Ross Anderson, Eli Biham, Lars Knudsen: 'The Case for Serpent'
  http://www.cl.cam.ac.uk/ftp/users/rja14/serpentcase.pdf
• James Nechtvatal, Elaine Barker, Lawrence Bassham, William Burr, Morris Dworkin, James Foti, Edward Roback:
  'Report on the Development of the Advanced Encryption Standard (AES)'
  http://csrc.nist.gov/encryption/aes/round2/r2report.pdf
• Reinhard Wobst: 'Abenteuer Kryptologie', Addison Wesley, 1998