law aria_cbc_round_trip

bend-osdev-crypto@0.1.0.0 · LAWS.bend:903

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/aria.bend as Ar
import bend-osdev-crypto@0.1.0.0/modes.bend as Md
import bend-osdev-crypto@0.1.0.0/inst_cm.bend as CM

903# ARIA (legacy-ciphers) in CBC (modes.bend): decryption undoes encryption, for every key, IV and list of blocks
904law aria_cbc_round_trip:
905  for +k: Ar.LcAriaKey
906  for +iv: M.CmBlock
907  for +bs: List<&2, M.CmBlock>
908  {Md.CrCbc.decrypt_blocks(~Ar.LcAriaKey, ~M.CmBlock, ~Ar.LcAria.decrypt, ~CM.CrBlk128.xor, k, iv, Md.CrCbc.encrypt_blocks(~Ar.LcAriaKey, ~M.CmBlock, ~Ar.LcAria.encrypt, ~CM.CrBlk128.xor, k, iv, bs)) == bs : List<&2, M.CmBlock>}