proposition: Lemma length_BitString_into_ByteString : forall l, length_ByteString (BitString_into_ByteString l) = length l.
proof: Proof. induction l; simpl. - reflexivity. - rewrite ByteString_measure_push; simpl; rewrite IHl; omega. Qed.
imports: Fiat.Common.Coq__8_4__8_5__Compat Bedrock.Word Coq.ZArith.ZArith Coq.NArith.NArith Coq.Arith.Arith Coq.Numbers.Natural.Peano.NPeano Coq.Logic.Eqdep_dec Fiat.Narcissus.Common.Specs