Crypt::Camellia_PP is a pure perl implementation of Camellia, a 128-bit
symmetrical block cipher with 128-bit, 192-bit, and 256-bit key from
NTT and Mitsubishi Electric Corporation.  It is one of the approved
encryption methods to be used by European Union as well as specified
in several Internet RFCs.

See also: http://info.isl.ntt.co.jp/crypt/eng/camellia/index.html