law twofish_key_length

bend-osdev-crypto@0.1.0.0 · LAWS.bend:849

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-legacy-ciphers@0.1.0.0/twofish.bend as Tf
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

849# Twofish (legacy-ciphers): a key of 20 bytes is refused
850law twofish_key_length:
851  {Result.map(&2, &2, Cr.CrError, Tf.LcTwofishKey, Unit, k => Unit{}, LC.CrLc.key(~Tf.LcTwofishKey, ~Tf.LcTwofish.key, B.Octets.zeros(20n))) == Fail{Cr.CrBadKeyLength{20n}} : Result<&2, &2, Cr.CrError, Unit>}