def mul64
import bend-collections@1.0.0.0/proofs/crypto/sha/packed/conformance.bend as Conformanceimport Base
606# Byte counts of whole blocks: 64 * k, built the way stream accumulates them.
607def mul64(k: Nat) -> Nat:
608 match k:
609 case 0n:
610 0n
611 case 1n+p:
612 Nat.add(64n, mul64(p))