law xtea_key_length

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1089

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-legacy-ciphers@0.1.0.0/xtea.bend as Xt
import bend-osdev-crypto@0.1.0.0/crypto.bend as Cr
import bend-osdev-crypto@0.1.0.0/inst_lc.bend as LC

1089# XTEA, little-endian words (legacy-ciphers): a key of 17 bytes is refused
1090law xtea_key_length:
1091  {Result.map(&2, &2, Cr.CrError, Xt.LcXteaKey, Unit, k => Unit{}, LC.CrLc.key(~Xt.LcXteaKey, ~Xt.LcXtea.key, B.Octets.zeros(17n))) == Fail{Cr.CrBadKeyLength{17n}} : Result<&2, &2, Cr.CrError, Unit>}