AES Contest 1997-2001 June 1998 15 Candidates Round 1 from USA, Canada, Belgium, Security France, Germany, Norway, UK, Israel Software efficiency Korea, Japan, Australia, Costa rica Flexibility August 1999 Round 2 5 final candidates Security Mars, RC6, Rijndael, Serpent, Twofish Hardware efficien October 2000 I winner: Rijndael Belgium4 15 Candidates from USA, Canada, Belgium, France, Germany, Norway, UK, Israel, Korea, Japan, Australia, Costa Rica June 1998 August 1999 October 2000 1 winner: Rijndael Belgium 5 final candidates Mars, RC6, Rijndael, Serpent, Twofish Round 1 Round 2 Security Software efficiency Flexibility Security Hardware efficiency AES Contest 1997-2001