def padding
import bend-collections-laws-crypto@1.0.0.0/src/crypto/sha/core.bend as Coreimport Base
974# The padding suffix built only with tail-recursive loops.
975def padding(+n: Nat) -> List<&2, U32>:
976 128 <> zeros_onto(Nat.mod(Nat.sub(119n, Nat.mod(n, 64n)), 64n), bit_length(n))