law streebog256_hash_streaming

bend-osdev-crypto@0.1.0.0 · LAWS.bend:1425

import Base
import bend-osdev-bytes@0.1.0.0/bytes.bend as B
import bend-osdev-hashes@0.1.0.0/hashes.bend as Hs
import bend-osdev-hashes@0.1.0.0/streebog.bend as HST

1425# Streebog-256 (hashes): update over a ++ b is update over a, then b, for every state
1426law streebog256_hash_streaming:
1427  for s: Hs.HsMdState<HST.HsStbCv>
1428  for +a: B.Octets
1429  for +b: B.Octets
1430  {HST.HsStreebog.update(s, B.Octets.append(a, b)) == HST.HsStreebog.update(HST.HsStreebog.update(s, a), b) : Hs.HsMdState<HST.HsStbCv>}