LCOV - code coverage report
Current view: top level - builds/gnutls/coverage/gnutls-git/lib - hash_int.h (source / functions) Hit Total Coverage
Test: GnuTLS-3.6.14 Code Coverage Lines: 13 13 100.0 %
Date: 2020-10-30 04:50:48 Functions: 0 0 -
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  * Copyright (C) 2000-2012 Free Software Foundation, Inc.
       3             :  *
       4             :  * Author: Nikos Mavrogiannopoulos
       5             :  *
       6             :  * This file is part of GnuTLS.
       7             :  *
       8             :  * The GnuTLS is free software; you can redistribute it and/or
       9             :  * modify it under the terms of the GNU Lesser General Public License
      10             :  * as published by the Free Software Foundation; either version 2.1 of
      11             :  * the License, or (at your option) any later version.
      12             :  *
      13             :  * This library is distributed in the hope that it will be useful, but
      14             :  * WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :  * Lesser General Public License for more details.
      17             :  *
      18             :  * You should have received a copy of the GNU Lesser General Public License
      19             :  * along with this program.  If not, see <https://www.gnu.org/licenses/>
      20             :  *
      21             :  */
      22             : 
      23             : #ifndef GNUTLS_LIB_HASH_INT_H
      24             : #define GNUTLS_LIB_HASH_INT_H
      25             : 
      26             : #include "gnutls_int.h"
      27             : #include <gnutls/crypto.h>
      28             : #include <crypto-backend.h>
      29             : #include <crypto.h>
      30             : 
      31             : /* for message digests */
      32             : 
      33             : extern int crypto_mac_prio;
      34             : extern gnutls_crypto_mac_st _gnutls_mac_ops;
      35             : 
      36             : extern int crypto_digest_prio;
      37             : extern gnutls_crypto_digest_st _gnutls_digest_ops;
      38             : 
      39             : typedef int (*hash_func) (void *handle, const void *text, size_t size);
      40             : typedef int (*nonce_func) (void *handle, const void *text, size_t size);
      41             : typedef int (*output_func) (void *src_ctx, void *digest,
      42             :                             size_t digestsize);
      43             : typedef void (*hash_deinit_func) (void *handle);
      44             : typedef void *(*copy_func) (const void *handle);
      45             : typedef int (*setkey_func) (void *handle, const void *key, size_t keysize);
      46             : 
      47             : typedef struct {
      48             :         const mac_entry_st *e;
      49             :         hash_func hash;
      50             :         output_func output;
      51             :         hash_deinit_func deinit;
      52             :         copy_func copy;
      53             : 
      54             :         const void *key;        /* esoteric use by SSL3 MAC functions */
      55             :         int keysize;
      56             : 
      57             :         void *handle;
      58             : } digest_hd_st;
      59             : 
      60             : typedef struct {
      61             :         const mac_entry_st *e;
      62             :         int mac_len;
      63             : 
      64             :         hash_func hash;
      65             :         nonce_func setnonce;
      66             :         output_func output;
      67             :         hash_deinit_func deinit;
      68             :         copy_func copy;
      69             :         setkey_func setkey;
      70             : 
      71             :         void *handle;
      72             : } mac_hd_st;
      73             : 
      74             : /* basic functions */
      75             : int _gnutls_digest_exists(gnutls_digest_algorithm_t algo);
      76             : 
      77             : int _gnutls_mac_exists(gnutls_mac_algorithm_t algorithm);
      78             : int _gnutls_mac_init(mac_hd_st *, const mac_entry_st * e,
      79             :                      const void *key, int keylen);
      80             : 
      81             : int _gnutls_mac_copy(const mac_hd_st * handle, mac_hd_st * dst);
      82             : 
      83             : int _gnutls_mac_fast(gnutls_mac_algorithm_t algorithm, const void *key,
      84             :                      int keylen, const void *text, size_t textlen,
      85             :                      void *digest);
      86             : 
      87             : inline static int
      88     5923169 : _gnutls_mac(mac_hd_st * handle, const void *text, size_t textlen)
      89             : {
      90     5898098 :         if (textlen > 0) {
      91     5904835 :                 return handle->hash(handle->handle, text, textlen);
      92             :         }
      93             :         return 0;
      94             : }
      95             : 
      96     2468182 : inline static void _gnutls_mac_output(mac_hd_st * handle, void *digest)
      97             : {
      98     2468182 :         if (digest != NULL) {
      99     2468182 :                 handle->output(handle->handle, digest, handle->mac_len);
     100             :         }
     101        8802 : }
     102             : 
     103             : inline static int
     104           6 : _gnutls_mac_set_nonce(mac_hd_st * handle, const void *nonce, size_t n_size)
     105             : {
     106           6 :         if (handle->setnonce)
     107           6 :                 return handle->setnonce(handle->handle, nonce, n_size);
     108             :         return 0;
     109             : }
     110             : 
     111             : inline static int
     112             : _gnutls_mac_setkey(mac_hd_st * handle, const void *key, size_t key_size)
     113             : {
     114             :         return handle->setkey(handle->handle, key, key_size);
     115             : }
     116             : 
     117             : 
     118             : void _gnutls_mac_deinit(mac_hd_st * handle, void *digest);
     119             : 
     120             : /* Hash interface */
     121             : int _gnutls_hash_init(digest_hd_st *, const mac_entry_st * e);
     122             : 
     123             : inline static int
     124      147800 : _gnutls_hash(digest_hd_st * handle, const void *text, size_t textlen)
     125             : {
     126      139452 :         if (textlen > 0) {
     127      145659 :                 return handle->hash(handle->handle, text, textlen);
     128             :         }
     129             :         return 0;
     130             : }
     131             : 
     132             : /* when the current output is needed without calling deinit
     133             :  */
     134             : #define _gnutls_hash_output(h, d) \
     135             :   (h)->output((h)->handle, d, _gnutls_hash_get_algo_len((h)->e))
     136             : 
     137             : void _gnutls_hash_deinit(digest_hd_st * handle, void *digest);
     138             : 
     139             : int _gnutls_hash_copy(const digest_hd_st * handle, digest_hd_st * dst);
     140             : 
     141             : int
     142             : _gnutls_hash_fast(gnutls_digest_algorithm_t algorithm,
     143             :                   const void *text, size_t textlen, void *digest);
     144             : 
     145             : #ifdef ENABLE_SSL3
     146             : /* helper functions */
     147             : int _gnutls_mac_init_ssl3(digest_hd_st *, const mac_entry_st * e,
     148             :                           void *key, int keylen);
     149             : int _gnutls_mac_deinit_ssl3(digest_hd_st * handle, void *digest);
     150             : int _gnutls_mac_output_ssl3(digest_hd_st * handle, void *digest);
     151             : 
     152             : int _gnutls_ssl3_generate_random(void *secret, int secret_len,
     153             :                                  void *rnd, int random_len, int bytes,
     154             :                                  uint8_t * ret);
     155             : 
     156             : int _gnutls_mac_deinit_ssl3_handshake(digest_hd_st * handle, void *digest,
     157             :                                       uint8_t * key, uint32_t key_size);
     158             : #endif
     159             : 
     160             : inline static int IS_SHA(gnutls_digest_algorithm_t algo)
     161             : {
     162             :         if (algo == GNUTLS_DIG_SHA1 || algo == GNUTLS_DIG_SHA224 ||
     163             :             algo == GNUTLS_DIG_SHA256 || algo == GNUTLS_DIG_SHA384 ||
     164             :             algo == GNUTLS_DIG_SHA512)
     165             :                 return 1;
     166             :         return 0;
     167             : }
     168             : 
     169             : #endif /* GNUTLS_LIB_HASH_INT_H */

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