1#ifndef HEADER_CURL_HMAC_H
2#define HEADER_CURL_HMAC_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
11 *
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at https://curl.se/docs/copyright.html.
15 *
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
19 *
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
22 *
23 * SPDX-License-Identifier: curl
24 *
25 ***************************************************************************/
26
27#if (defined(USE_CURL_NTLM_CORE) && !defined(USE_WINDOWS_SSPI)) \
28 || !defined(CURL_DISABLE_AWS) || !defined(CURL_DISABLE_DIGEST_AUTH)
29
30#include <curl/curl.h>
31
32#define HMAC_MD5_LENGTH 16
33
34typedef CURLcode (* HMAC_hinit_func)(void *context);
35typedef void (* HMAC_hupdate_func)(void *context,
36 const unsigned char *data,
37 unsigned int len);
38typedef void (* HMAC_hfinal_func)(unsigned char *result, void *context);
39
40
41/* Per-hash function HMAC parameters. */
42struct HMAC_params {
43 HMAC_hinit_func
44 hmac_hinit; /* Initialize context procedure. */
45 HMAC_hupdate_func hmac_hupdate; /* Update context with data. */
46 HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */
47 unsigned int hmac_ctxtsize; /* Context structure size. */
48 unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */
49 unsigned int hmac_resultlen; /* Result length (bytes). */
50};
51
52
53/* HMAC computation context. */
54struct HMAC_context {
55 const struct HMAC_params *hmac_hash; /* Hash function definition. */
56 void *hmac_hashctxt1; /* Hash function context 1. */
57 void *hmac_hashctxt2; /* Hash function context 2. */
58};
59
60
61/* Prototypes. */
62struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams,
63 const unsigned char *key,
64 unsigned int keylen);
65int Curl_HMAC_update(struct HMAC_context *context,
66 const unsigned char *data,
67 unsigned int len);
68int Curl_HMAC_final(struct HMAC_context *context, unsigned char *result);
69
70CURLcode Curl_hmacit(const struct HMAC_params *hashparams,
71 const unsigned char *key, const size_t keylen,
72 const unsigned char *data, const size_t datalen,
73 unsigned char *output);
74
75#endif
76
77#endif /* HEADER_CURL_HMAC_H */
78