(AES) The NIST' s replacement for the Data Encryption Standard (DES).The Rijndael /rayn-dahl/ symmetric block cipher, designed by Joan Daemen and Vincent Rijmen, was chosen by a NIST contest to be AES.AES is Federal Information Processing Standard FIPS-197.AES currently supports 128, 192 and 256-bit keys and encryption blocks, but may be extended in multiples of 32 bits.Start .{Rijndael home page (http://www.esat.kuleuven.ac.be/~rijmen/rijndael/)}.(2003-07-04)