law xtea_block_round_trip_dual

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1083

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/xtea.bend as Xt

1083# XTEA, little-endian words (legacy-ciphers): encryption undoes decryption (a permutation of the blocks)
1084law xtea_block_round_trip_dual:
1085  for k: Xt.LcXteaKey
1086  for +b: L.LcBlock64
1087  {Xt.LcXtea.encrypt(k, Xt.LcXtea.decrypt(k, b)) == b : L.LcBlock64}