def byte_and
import bend-collections-laws-crypto@1.0.0.0/proofs/crypto/ed25519/bytes.bend as Bytesimport Base
import bend-collections-laws-crypto@1.0.0.0/proofs/math/hash/hash.bend as HH
111def byte_and(+x: U32) -> {Nat.is_le(v(U32.and(x, 255)), 255n) == True{} : Bool}:
112 HH.and_le32(x, 255)