*
AES
*Origins
* clear
* *
a replacement for DES was needed
Key size is too small The variants are just patches
* can
use Triple-DES ± but slow, has small Tripleblocks * US NIST issued call for ciphers in 1997 * 15 candidates accepted in Jun 98 * 5 were shortlisted in Aug-99 Aug-
*AES Competition Requirements
* private
key symmetric block cipher * 128-bit data, 128/192/256-bit keys 128128/192/256* stronger & faster than Triple-DES Triple* provide full specification & design details * both C & Java implementations * NIST have released all submissions & unclassified analyses
*AES Evalua
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