Lemma HMAC256_DRBG_reseed_functionWFaux a b c s t x y A B zz C D ss
(H: ENTROPY.success (A, B, zz, C, D) ss =
HMAC256_DRBG_functional_prog.HMAC256_DRBG_reseed_function a b c s t x y):
0 <= zz < Int.max_signed /\ Zlength A = 32.