law serpent_block_round_trip

bend-osdev-crypto@0.1.0.0 · LAWS.bend:793

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/serpent.bend as Sp

793# Serpent (legacy-ciphers): decryption undoes encryption, for every key and block
794law serpent_block_round_trip:
795  for k: Sp.LcSerpentKey
796  for +b: M.CmBlock
797  {Sp.LcSerpent.decrypt(k, Sp.LcSerpent.encrypt(k, b)) == b : M.CmBlock}