law hmac_crc64_streaming

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1193

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-word64@0.1.0.0/word64.bend as W
import bend-osdev-crc@0.1.0.0/crc.bend as C
import bend-osdev-crypto@0.1.0.0/hmac.bend as Hm
import bend-osdev-crypto@0.1.0.0/inst_crc.bend as CR

1193# HMAC over CRC-64 of any parameter set (crc): the state after a ++ b is the state after a, then b
1194law hmac_crc64_streaming:
1195  for ~spec: C.Crc64Spec
1196  for s: Hm.CrHmacState<W.W64>
1197  for +a: B.Octets
1198  for +b: B.Octets
1199  {Hm.CrHmac.update(~W.W64, ~CR.CrCrc64.update(~spec), s, B.Octets.append(a, b)) == Hm.CrHmac.update(~W.W64, ~CR.CrCrc64.update(~spec), Hm.CrHmac.update(~W.W64, ~CR.CrCrc64.update(~spec), s, a), b) : Hm.CrHmacState<W.W64>}