text: /*
   * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the Apache License 2.0 (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   */
  
  #ifndef OPENSSL_HMAC_H
  # define OPENSSL_HMAC_H
  # pragma once
  
  # include <openssl/macros.h>
  # ifndef OPENSSL_NO_DEPRECATED_3_0
  #  define HEADER_HMAC_H
  # endif
  
  # include <openssl/opensslconf.h>
  
  # include <openssl/evp.h>
  
  # ifndef OPENSSL_NO_DEPRECATED_3_0
  #  define HMAC_MAX_MD_CBLOCK      128    /* Deprecated */
  # endif
  
  # ifdef  __cplusplus
  extern "C" {
  # endif
  
  DEPRECATEDIN_3_0(size_t HMAC_size(const HMAC_CTX *e))
  DEPRECATEDIN_3_0(HMAC_CTX *HMAC_CTX_new(void))
  DEPRECATEDIN_3_0(int HMAC_CTX_reset(HMAC_CTX *ctx))
  DEPRECATEDIN_3_0(void HMAC_CTX_free(HMAC_CTX *ctx))
  
  DEPRECATEDIN_1_1_0(__owur int HMAC_Init(HMAC_CTX *ctx, const void *key, int len,
                                          const EVP_MD *md))
  
  DEPRECATEDIN_3_0(int HMAC_Init_ex(HMAC_CTX *ctx, const void *key, int len,
                                    const EVP_MD *md, ENGINE *impl))
  DEPRECATEDIN_3_0(int HMAC_Update(HMAC_CTX *ctx, const unsigned char *data,
                                   size_t len))
  DEPRECATEDIN_3_0(int HMAC_Final(HMAC_CTX *ctx, unsigned char *md,
                                  unsigned int *len))
  DEPRECATEDIN_3_0(unsigned char *HMAC(const EVP_MD *evp_md, const void *key,
                                       int key_len, const unsigned char *d,
                                       size_t n, unsigned char *md,
                                       unsigned int *md_len))
  DEPRECATEDIN_3_0(__owur int HMAC_CTX_copy(HMAC_CTX *dctx, HMAC_CTX *sctx))
  
  DEPRECATEDIN_3_0(void HMAC_CTX_set_flags(HMAC_CTX *ctx, unsigned long flags))
  DEPRECATEDIN_3_0(const EVP_MD *HMAC_CTX_get_md(const HMAC_CTX *ctx))
  
  # ifdef  __cplusplus
  }
  # endif
  
  #endif
  