crypto/external/bsd/heimdal/dist/lib/hcrypto/hmac.h

   1 /*      $NetBSD: hmac.h,v 1.1.1.2 2011/04/14 14:08:32 elric Exp $       */
   2
   3 /*
   4  * Copyright (c) 2005 Kungliga Tekniska Högskolan
   5  * (Royal Institute of Technology, Stockholm, Sweden).
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 /* Id */
  37
  38 #ifndef HEIM_HMAC_H
  39 #define HEIM_HMAC_H 1
  40
  41 #include <hcrypto/evp.h>
  42
  43 /* symbol renaming */
  44 #define HMAC_CTX_init hc_HMAC_CTX_init
  45 #define HMAC_CTX_cleanup hc_HMAC_CTX_cleanup
  46 #define HMAC_size hc_HMAC_size
  47 #define HMAC_Init_ex hc_HMAC_Init_ex
  48 #define HMAC_Update hc_HMAC_Update
  49 #define HMAC_Final hc_HMAC_Final
  50 #define HMAC hc_HMAC
  51
  52 /*
  53  *
  54  */
  55
  56 #define HMAC_MAX_MD_CBLOCK      64
  57
  58 typedef struct hc_HMAC_CTX HMAC_CTX;
  59
  60 struct hc_HMAC_CTX {
  61     const EVP_MD *md;
  62     ENGINE *engine;
  63     EVP_MD_CTX *ctx;
  64     size_t key_length;
  65     void *opad;
  66     void *ipad;
  67     void *buf;
  68 };
  69
  70
  71 void    HMAC_CTX_init(HMAC_CTX *);
  72 void    HMAC_CTX_cleanup(HMAC_CTX *ctx);
  73
  74 size_t  HMAC_size(const HMAC_CTX *ctx);
  75
  76 void    HMAC_Init_ex(HMAC_CTX *, const void *, size_t,
  77                      const EVP_MD *, ENGINE *);
  78 void    HMAC_Update(HMAC_CTX *ctx, const void *data, size_t len);
  79 void    HMAC_Final(HMAC_CTX *ctx, void *md, unsigned int *len);
  80
  81 void *  HMAC(const EVP_MD *evp_md, const void *key, size_t key_len,
  82              const void *data, size_t n, void *md, unsigned int *md_len);
  83
  84 #endif /* HEIM_HMAC_H */