law des_ecb_round_trip

bend-osdev-crypto@0.1.0.0 · LAWS.bend:649

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
import bend-osdev-crypto@0.1.0.0/modes.bend as Md

649# DES (legacy-ciphers) in ECB (modes.bend): decryption undoes encryption, for every key and list of blocks
650law des_ecb_round_trip:
651  for +k: D.LcDesKey
652  for +bs: List<&2, L.LcBlock64>
653  {Md.CrEcb.decrypt_blocks(~D.LcDesKey, ~L.LcBlock64, ~D.LcDes.decrypt, k, Md.CrEcb.encrypt_blocks(~D.LcDesKey, ~L.LcBlock64, ~D.LcDes.encrypt, k, bs)) == bs : List<&2, L.LcBlock64>}