law ripemd160_streaming

bend-osdev-hashes@0.1.0.0 · LAWS.bend:193

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/ripemd160.bend as RM

193# RIPEMD-160: update over a ++ b is update over a, then b, from every state
194law ripemd160_streaming:
195  for s: Hs.HsMdState<Hs.HsW5>
196  for +a: B.Octets
197  for +b: B.Octets
198  {RM.HsRipemd160.update(s, B.Octets.append(a, b)) == RM.HsRipemd160.update(RM.HsRipemd160.update(s, a), b) : Hs.HsMdState<Hs.HsW5>}