Source : Free On-Line Dictionary of Computing

Advanced Encryption Standard
     
         (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.
     
        {Home (http://csrc.nist.gov/CryptoToolkit/aes/)}.
     
        {Rijndael home page
        (http://www.esat.kuleuven.ac.be/~rijmen/rijndael/)}.
     
        (2003-07-04)