1 | #ifndef HEADER_CURL_HMAC_H |
2 | #define |
3 | /*************************************************************************** |
4 | * _ _ ____ _ |
5 | * Project ___| | | | _ \| | |
6 | * / __| | | | |_) | | |
7 | * | (__| |_| | _ <| |___ |
8 | * \___|\___/|_| \_\_____| |
9 | * |
10 | * Copyright (C) 1998 - 2022, Daniel Stenberg, <[email protected]>, 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 | #ifndef CURL_DISABLE_CRYPTO_AUTH |
28 | |
29 | #define HMAC_MD5_LENGTH 16 |
30 | |
31 | typedef CURLcode (* HMAC_hinit_func)(void *context); |
32 | typedef void (* HMAC_hupdate_func)(void *context, |
33 | const unsigned char *data, |
34 | unsigned int len); |
35 | typedef void (* HMAC_hfinal_func)(unsigned char *result, void *context); |
36 | |
37 | |
38 | /* Per-hash function HMAC parameters. */ |
39 | struct HMAC_params { |
40 | HMAC_hinit_func |
41 | hmac_hinit; /* Initialize context procedure. */ |
42 | HMAC_hupdate_func hmac_hupdate; /* Update context with data. */ |
43 | HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */ |
44 | unsigned int hmac_ctxtsize; /* Context structure size. */ |
45 | unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */ |
46 | unsigned int hmac_resultlen; /* Result length (bytes). */ |
47 | }; |
48 | |
49 | |
50 | /* HMAC computation context. */ |
51 | struct HMAC_context { |
52 | const struct HMAC_params *hmac_hash; /* Hash function definition. */ |
53 | void *hmac_hashctxt1; /* Hash function context 1. */ |
54 | void *hmac_hashctxt2; /* Hash function context 2. */ |
55 | }; |
56 | |
57 | |
58 | /* Prototypes. */ |
59 | struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams, |
60 | const unsigned char *key, |
61 | unsigned int keylen); |
62 | int Curl_HMAC_update(struct HMAC_context *context, |
63 | const unsigned char *data, |
64 | unsigned int len); |
65 | int Curl_HMAC_final(struct HMAC_context *context, unsigned char *result); |
66 | |
67 | CURLcode Curl_hmacit(const struct HMAC_params *hashparams, |
68 | const unsigned char *key, const size_t keylen, |
69 | const unsigned char *data, const size_t datalen, |
70 | unsigned char *output); |
71 | |
72 | #endif |
73 | |
74 | #endif /* HEADER_CURL_HMAC_H */ |
75 | |