law sm4_key_length

bend-osdev-crypto@0.1.0.0 · LAWS.bend:717

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-legacy-ciphers@0.1.0.0/sm4.bend as S
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

717# SM4 (legacy-ciphers): a key of 15 bytes is refused
718law sm4_key_length:
719  {Result.map(&2, &2, Cr.CrError, S.LcSm4Key, Unit, k => Unit{}, LC.CrLc.key(~S.LcSm4Key, ~S.LcSm4.key, B.Octets.zeros(15n))) == Fail{Cr.CrBadKeyLength{15n}} : Result<&2, &2, Cr.CrError, Unit>}