bes

Overview ¶

Package bes implements the Big Encryption System, a variant of AES with more algebraic structure.

From the abstract of the source paper:

One difficulty in the cryptanalysis of the Advanced Encryption Standard (AES) is the tension between operations in
the two fields GF(2^8) and GF(2). ... We define a new block cipher, the BES, that uses only simple operations in
GF(2^8). Yet, the AES can be regarded as being identical to the BES with a restricted message space and key space,
thus enabling the AES to be realised solely using simple algebraic operations in one field GF(2^8). This permits
the exploration of the AES within a broad and rich setting.

"Essential Algebraic Structure Within the AES" by S. Murphy and M.J.B. Robshaw, http://www.isg.rhul.ac.uk/~sean/crypto.pdf