law hmac_md4_split

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1262

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-crypto@0.1.0.0/hmac.bend as Hm
import bend-osdev-hashes@0.1.0.0/hashes.bend as Hs
import bend-osdev-hashes@0.1.0.0/md4.bend as HM4

1262# HMAC over MD4 (hashes): the tag in pieces is the tag in one call, for every split
1263law hmac_md4_split:
1264  for +kk: Hm.CrHmacKey
1265  for +a: B.Octets
1266  for +b: B.Octets
1267  {Hm.CrHmac.finish(~Hs.HsMdState<Hs.HsW4>, ~HM4.HsMd4.init(), ~HM4.HsMd4.update, ~HM4.HsMd4.final, Hm.CrHmac.update(~Hs.HsMdState<Hs.HsW4>, ~HM4.HsMd4.update, Hm.CrHmac.update(~Hs.HsMdState<Hs.HsW4>, ~HM4.HsMd4.update, Hm.CrHmac.start(~Hs.HsMdState<Hs.HsW4>, ~HM4.HsMd4.init(), ~HM4.HsMd4.update, kk), a), b)) == Hm.CrHmac.mac(~HM4.HsMd4.digest, kk, B.Octets.append(a, b)) : B.Octets}