1/*
2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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 OPENSSL_HMAC_H
11# define OPENSSL_HMAC_H
12# pragma once
13
14# include <openssl/macros.h>
15# ifndef OPENSSL_NO_DEPRECATED_3_0
16# define HEADER_HMAC_H
17# endif
18
19# include <openssl/opensslconf.h>
20
21# include <openssl/evp.h>
22
23# ifndef OPENSSL_NO_DEPRECATED_3_0
24# define HMAC_MAX_MD_CBLOCK 200 /* Deprecated */
25# endif
26
27# ifdef __cplusplus
28extern "C" {
29# endif
30
31# ifndef OPENSSL_NO_DEPRECATED_3_0
32OSSL_DEPRECATEDIN_3_0 size_t HMAC_size(const HMAC_CTX *e);
33OSSL_DEPRECATEDIN_3_0 HMAC_CTX *HMAC_CTX_new(void);
34OSSL_DEPRECATEDIN_3_0 int HMAC_CTX_reset(HMAC_CTX *ctx);
35OSSL_DEPRECATEDIN_3_0 void HMAC_CTX_free(HMAC_CTX *ctx);
36# endif
37# ifndef OPENSSL_NO_DEPRECATED_1_1_0
38OSSL_DEPRECATEDIN_1_1_0 __owur int HMAC_Init(HMAC_CTX *ctx,
39 const void *key, int len,
40 const EVP_MD *md);
41# endif
42# ifndef OPENSSL_NO_DEPRECATED_3_0
43OSSL_DEPRECATEDIN_3_0 int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
44 const EVP_MD *md, ENGINE *impl);
45OSSL_DEPRECATEDIN_3_0 int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data,
46 size_t len);
47OSSL_DEPRECATEDIN_3_0 int HMAC_Final(HMAC_CTX *ctx, unsigned char *md,
48 unsigned int *len);
49OSSL_DEPRECATEDIN_3_0 __owur int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx);
50OSSL_DEPRECATEDIN_3_0 void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags);
51OSSL_DEPRECATEDIN_3_0 const EVP_MD *HMAC_CTX_get_md(const HMAC_CTX *ctx);
52# endif
53
54unsigned char *HMAC(const EVP_MD *evp_md, const void *key, int key_len,
55 const unsigned char *data, size_t data_len,
56 unsigned char *md, unsigned int *md_len);
57
58# ifdef __cplusplus
59}
60# endif
61
62#endif
63

source code of include/openssl/hmac.h