law cast5_block_round_trip_dual

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1011

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/cast5.bend as C5

1011# CAST-128 (legacy-ciphers): encryption undoes decryption (a permutation of the blocks)
1012law cast5_block_round_trip_dual:
1013  for k: C5.LcCast5Key
1014  for +b: L.LcBlock64
1015  {C5.LcCast5.encrypt(k, C5.LcCast5.decrypt(k, b)) == b : L.LcBlock64}