Here BIAES uses a bijective padding algorithm.
Every 32 blocks, a key change is made.
This algorithm is completely deterministic, and makes no use of
An attempt to prevent recognition of transmission of multiple documents
with the same header under the same key is made. The defense takes
the form of hashing the message, and whitening the first block with
the hash before encryption.
However, identical files result in identical cyphertexts if the same key is used.
This mode is the default.