An encryption scheme that encrypts a 48-bit message into a ciphertext of length 48 bits usingwith a balanced Feistel network that uses AES as the round function.
- Installation: https://github.com/mw866/stream-cipher/blob/master/README.md
- FFX specification: http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/ffx/ffx-spec2.pdf
- Security of Feistel Rounds: