| 1 | #ifndef HEADER_CURL_HMAC_H
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| 2 | #define HEADER_CURL_HMAC_H
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| 3 | /***************************************************************************
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| 4 | * _ _ ____ _
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| 5 | * Project ___| | | | _ \| |
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| 6 | * / __| | | | |_) | |
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| 7 | * | (__| |_| | _ <| |___
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| 8 | * \___|\___/|_| \_\_____|
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| 9 | *
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| 10 | * Copyright (C) 1998 - 2022, Daniel Stenberg, <[email protected]>, et al.
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| 11 | *
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| 12 | * This software is licensed as described in the file COPYING, which
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| 13 | * you should have received as part of this distribution. The terms
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| 14 | * are also available at https://curl.se/docs/copyright.html.
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| 15 | *
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| 16 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 17 | * copies of the Software, and permit persons to whom the Software is
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| 18 | * furnished to do so, under the terms of the COPYING file.
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| 19 | *
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| 20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 21 | * KIND, either express or implied.
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| 22 | *
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| 23 | * SPDX-License-Identifier: curl
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| 24 | *
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| 25 | ***************************************************************************/
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| 26 |
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| 27 | #ifndef CURL_DISABLE_CRYPTO_AUTH
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| 28 |
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| 29 | #include <curl/curl.h>
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| 30 |
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| 31 | #define HMAC_MD5_LENGTH 16
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| 32 |
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| 33 | typedef CURLcode (* HMAC_hinit_func)(void *context);
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| 34 | typedef void (* HMAC_hupdate_func)(void *context,
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| 35 | const unsigned char *data,
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| 36 | unsigned int len);
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| 37 | typedef void (* HMAC_hfinal_func)(unsigned char *result, void *context);
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| 38 |
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| 39 |
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| 40 | /* Per-hash function HMAC parameters. */
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| 41 | struct HMAC_params {
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| 42 | HMAC_hinit_func
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| 43 | hmac_hinit; /* Initialize context procedure. */
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| 44 | HMAC_hupdate_func hmac_hupdate; /* Update context with data. */
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| 45 | HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */
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| 46 | unsigned int hmac_ctxtsize; /* Context structure size. */
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| 47 | unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */
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| 48 | unsigned int hmac_resultlen; /* Result length (bytes). */
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| 49 | };
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| 50 |
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| 51 |
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| 52 | /* HMAC computation context. */
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| 53 | struct HMAC_context {
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| 54 | const struct HMAC_params *hmac_hash; /* Hash function definition. */
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| 55 | void *hmac_hashctxt1; /* Hash function context 1. */
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| 56 | void *hmac_hashctxt2; /* Hash function context 2. */
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| 57 | };
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| 58 |
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| 59 |
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| 60 | /* Prototypes. */
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| 61 | struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams,
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| 62 | const unsigned char *key,
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| 63 | unsigned int keylen);
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| 64 | int Curl_HMAC_update(struct HMAC_context *context,
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| 65 | const unsigned char *data,
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| 66 | unsigned int len);
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| 67 | int Curl_HMAC_final(struct HMAC_context *context, unsigned char *result);
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| 68 |
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| 69 | CURLcode Curl_hmacit(const struct HMAC_params *hashparams,
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| 70 | const unsigned char *key, const size_t keylen,
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| 71 | const unsigned char *data, const size_t datalen,
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| 72 | unsigned char *output);
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| 73 |
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| 74 | #endif
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| 75 |
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| 76 | #endif /* HEADER_CURL_HMAC_H */
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