law keep_correct
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/blake/blake2b/blocks.bend as Blocksimport Base
import bend-collections-laws-crypto@1.0.0.0/src/crypto/blake/blake2b/blake2b.bend as I
import bend-collections-laws-crypto@1.0.0.0/spec/crypto/blake/blake2b.bend as S
868law keep_correct:
869 for +w: U32
870 for +n: Nat
871 {I.keep(w,n) == S.keep(w,n) : U32}