law des_block_round_trip_dual

bend-osdev-crypto@0.1.0.0 · LAWS.bend:639

import Base
import bend-osdev-legacy-ciphers@0.1.0.0/legacy_ciphers.bend as L
import bend-osdev-legacy-ciphers@0.1.0.0/des.bend as D

639# DES (legacy-ciphers): encryption undoes decryption (a permutation of the blocks)
640law des_block_round_trip_dual:
641  for k: D.LcDesKey
642  for +b: L.LcBlock64
643  {D.LcDes.encrypt(k, D.LcDes.decrypt(k, b)) == b : L.LcBlock64}