Anubis is a variable-length key, 128-bit block cipher designed by
Vincent Rijmen and Paulo S. L. M. Barreto. Anubis was submitted as
a NESSIE candidate. Key length can be 128, 160, 192, 224, 256, 288,
or 320 bits.

The default key length in this implementation is 128 bits.

WWW: http://search.cpan.org/perldoc?Crypt::Anubis