In October 2001, after a 3-year evaluation process, NIST announced its
decision to propose the Belgian algorithm Rijndael for the AES. In this
talk, we discuss some of the work that has been done on Rijndael since its
selection as the AES. The contributions can be divided into three groups.

The first group consists of studies regarding implementations with improved
performance on various platforms: hardware, PCs, smartcards. The second
group consists of the study of the algorithm's resistance against newly
developed cryptanalytic attacks. Lastly, we discuss some proposed changes
to the algorithm, that we incorporated in the new block cipher `Anubis',
which was submitted to the NESSIE evaluation process.