include/openssl/hmac.h

   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
  28 extern "C" {
  29 # endif
  30
  31 # ifndef OPENSSL_NO_DEPRECATED_3_0
  32 OSSL_DEPRECATEDIN_3_0 size_t HMAC_size(const HMAC_CTX *e);
  33 OSSL_DEPRECATEDIN_3_0 HMAC_CTX *HMAC_CTX_new(void);
  34 OSSL_DEPRECATEDIN_3_0 int HMAC_CTX_reset(HMAC_CTX *ctx);
  35 OSSL_DEPRECATEDIN_3_0 void HMAC_CTX_free(HMAC_CTX *ctx);
  36 # endif
  37 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
  38 OSSL_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
  43 OSSL_DEPRECATEDIN_3_0 int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
  44                                        const EVP_MD *md, ENGINE *impl);
  45 OSSL_DEPRECATEDIN_3_0 int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data,
  46                                       size_t len);
  47 OSSL_DEPRECATEDIN_3_0 int HMAC_Final(HMAC_CTX *ctx, unsigned char *md,
  48                                      unsigned int *len);
  49 OSSL_DEPRECATEDIN_3_0 __owur int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx);
  50 OSSL_DEPRECATEDIN_3_0 void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags);
  51 OSSL_DEPRECATEDIN_3_0 const EVP_MD *HMAC_CTX_get_md(const HMAC_CTX *ctx);
  52 # endif
  53
  54 unsigned 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