law twofish_block_round_trip_dual

bend-osdev-crypto@0.1.0.0 · LAWS.bend:843

import Base
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as M
import bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend as Tf

843# Twofish (legacy-ciphers): encryption undoes decryption (a permutation of the blocks)
844law twofish_block_round_trip_dual:
845  for k: Tf.LcTwofishKey
846  for +b: M.CmBlock
847  {Tf.LcTwofish.encrypt(k, Tf.LcTwofish.decrypt(k, b)) == b : M.CmBlock}