| /* Copyright 2016 The Chromium OS Authors. All rights reserved. | 
 |  * Use of this source code is governed by a BSD-style license that can be | 
 |  * found in the LICENSE file. | 
 |  */ | 
 |  | 
 | #pragma once | 
 |  | 
 | #include <stdint.h> | 
 | #include "2crypto.h" | 
 |  | 
 | /** | 
 |  * Compute HMAC | 
 |  * | 
 |  * @param alg		Hash algorithm ID | 
 |  * @param key		HMAC key | 
 |  * @param key_size	HMAC key size | 
 |  * @param msg		Message to compute HMAC for | 
 |  * @param msg_size	Message size | 
 |  * @param mac		Computed message authentication code | 
 |  * @param mac_size	Size of the buffer pointed by <mac> | 
 |  * @return | 
 |  */ | 
 | int hmac(enum vb2_hash_algorithm alg, | 
 | 	 const void *key, uint32_t key_size, | 
 | 	 const void *msg, uint32_t msg_size, | 
 | 	 uint8_t *mac, uint32_t mac_size); | 
 |  |