law sm4_ecb_round_trip

bend-osdev-crypto@0.1.0.0 · LAWS.bend:721

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/sm4.bend as S
import bend-osdev-crypto@0.1.0.0/modes.bend as Md

721# SM4 (legacy-ciphers) in ECB (modes.bend): decryption undoes encryption, for every key and list of blocks
722law sm4_ecb_round_trip:
723  for +k: S.LcSm4Key
724  for +bs: List<&2, M.CmBlock>
725  {Md.CrEcb.decrypt_blocks(~S.LcSm4Key, ~M.CmBlock, ~S.LcSm4.decrypt, k, Md.CrEcb.encrypt_blocks(~S.LcSm4Key, ~M.CmBlock, ~S.LcSm4.encrypt, k, bs)) == bs : List<&2, M.CmBlock>}