1/*
2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef HEADER_HMAC_H
11# define HEADER_HMAC_H
12
13# include <openssl/opensslconf.h>
14
15# include <openssl/evp.h>
16
17# define HMAC_MAX_MD_CBLOCK 128/* largest known is SHA512 */
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
23size_t HMAC_size(const HMAC_CTX *e);
24HMAC_CTX *HMAC_CTX_new(void);
25int HMAC_CTX_reset(HMAC_CTX *ctx);
26void HMAC_CTX_free(HMAC_CTX *ctx);
27
28DEPRECATEDIN_1_1_0(__owur int HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
29 const EVP_MD *md))
30
31/*__owur*/ int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
32 const EVP_MD *md, ENGINE *impl);
33/*__owur*/ int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data,
34 size_t len);
35/*__owur*/ int HMAC_Final(HMAC_CTX *ctx, unsigned char *md,
36 unsigned int *len);
37unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
38 const unsigned char *d, size_t n, unsigned char *md,
39 unsigned int *md_len);
40__owur int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx);
41
42void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags);
43const EVP_MD *HMAC_CTX_get_md(const HMAC_CTX *ctx);
44
45#ifdef __cplusplus
46}
47#endif
48
49#endif
50