lib/gnutls_hash_int.h

   1 /*
   2  * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2010 Free
   3  * Software Foundation, Inc.
   4  *
   5  * Author: Nikos Mavrogiannopoulos
   6  *
   7  * This file is part of GnuTLS.
   8  *
   9  * The GnuTLS is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public License
  11  * as published by the Free Software Foundation; either version 2.1 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  22  * USA
  23  *
  24  */
  25
  26 #ifndef GNUTLS_HASH_INT_H
  27 #define GNUTLS_HASH_INT_H
  28
  29 #include <gnutls_int.h>
  30 #include <gnutls/crypto.h>
  31 #include <crypto.h>
  32
  33 /* for message digests */
  34
  35 extern int crypto_mac_prio;
  36 extern gnutls_crypto_mac_st _gnutls_mac_ops;
  37
  38 extern int crypto_digest_prio;
  39 extern gnutls_crypto_digest_st _gnutls_digest_ops;
  40
  41 typedef int (*hash_func) (void *handle, const void *text, size_t size);
  42 typedef int (*copy_func) (void **dst_ctx, void *src_ctx);
  43 typedef int (*output_func) (void *src_ctx, void *digest, size_t digestsize);
  44 typedef void (*deinit_func) (void *handle);
  45
  46 typedef struct
  47 {
  48   gnutls_mac_algorithm_t algorithm;
  49   const void *key;
  50   int keysize;
  51
  52   hash_func hash;
  53   copy_func copy;
  54   output_func output;
  55   deinit_func deinit;
  56
  57   void *handle;
  58 } digest_hd_st;
  59
  60 /* basic functions */
  61 int _gnutls_hmac_init (digest_hd_st *, gnutls_mac_algorithm_t algorithm,
  62                        const void *key, int keylen);
  63 int _gnutls_hmac_get_algo_len (gnutls_mac_algorithm_t algorithm);
  64 int _gnutls_hmac (digest_hd_st * handle, const void *text, size_t textlen);
  65
  66 int _gnutls_hmac_fast (gnutls_mac_algorithm_t algorithm, const void *key,
  67                        int keylen, const void *text, size_t textlen,
  68                        void *digest);
  69
  70 void _gnutls_hmac_deinit (digest_hd_st * handle, void *digest);
  71 void _gnutls_hmac_output (digest_hd_st * handle, void *digest);
  72
  73 int _gnutls_hash_init (digest_hd_st *, gnutls_digest_algorithm_t algorithm);
  74 int _gnutls_hash_get_algo_len (gnutls_digest_algorithm_t algorithm);
  75 int _gnutls_hash (digest_hd_st * handle, const void *text, size_t textlen);
  76 void _gnutls_hash_deinit (digest_hd_st * handle, void *digest);
  77 void _gnutls_hash_output (digest_hd_st * handle, void *digest);
  78
  79 int
  80 _gnutls_hash_fast (gnutls_digest_algorithm_t algorithm,
  81                    const void *text, size_t textlen, void *digest);
  82
  83 /* help functions */
  84 int _gnutls_mac_init_ssl3 (digest_hd_st *, gnutls_mac_algorithm_t algorithm,
  85                            void *key, int keylen);
  86 void _gnutls_mac_deinit_ssl3 (digest_hd_st * handle, void *digest);
  87
  88 int _gnutls_ssl3_generate_random (void *secret, int secret_len,
  89                                   void *rnd, int random_len, int bytes,
  90                                   opaque * ret);
  91 int _gnutls_ssl3_hash_md5 (const void *first, int first_len,
  92                            const void *second, int second_len,
  93                            int ret_len, opaque * ret);
  94
  95 void _gnutls_mac_deinit_ssl3_handshake (digest_hd_st * handle, void *digest,
  96                                         opaque * key, uint32_t key_size);
  97
  98 int _gnutls_hash_copy (digest_hd_st * dst_handle, digest_hd_st * src_handle);
  99
 100 #endif /* GNUTLS_HASH_INT_H */