Require Export aes.conv_HL_to_LL.
Local Open Scope Z.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.
Admitted.

Lemma zero_ext_nop: forall i,
0 <= (Int.unsigned i) < 256 ->
Int.zero_ext 8 i = i.