(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)