law tea_ecb_round_trip

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1057

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

1057# TEA, little-endian words (legacy-ciphers) in ECB (modes.bend): decryption undoes encryption, for every key and list of blocks
1058law tea_ecb_round_trip:
1059  for +k: Te.LcTeaKey
1060  for +bs: List<&2, L.LcBlock64>
1061  {Md.CrEcb.decrypt_blocks(~Te.LcTeaKey, ~L.LcBlock64, ~Te.LcTea.decrypt, k, Md.CrEcb.encrypt_blocks(~Te.LcTeaKey, ~L.LcBlock64, ~Te.LcTea.encrypt, k, bs)) == bs : List<&2, L.LcBlock64>}