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 || defined(USE_LIBSSH2) 30 31 #include <curl/curl.h> 32 33 #define HMAC_MD5_LENGTH 16 34 35 typedef CURLcode (* HMAC_hinit_func)(void *context); 36 typedef void (* HMAC_hupdate_func)(void *context, 37 const unsigned char *data, 38 unsigned int len); 39 typedef void (* HMAC_hfinal_func)(unsigned char *result, void *context); 40 41 42 /* Per-hash function HMAC parameters. */ 43 struct HMAC_params { 44 HMAC_hinit_func 45 hmac_hinit; /* Initialize context procedure. */ 46 HMAC_hupdate_func hmac_hupdate; /* Update context with data. */ 47 HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */ 48 unsigned int hmac_ctxtsize; /* Context structure size. */ 49 unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */ 50 unsigned int hmac_resultlen; /* Result length (bytes). */ 51 }; 52 53 54 /* HMAC computation context. */ 55 struct HMAC_context { 56 const struct HMAC_params *hmac_hash; /* Hash function definition. */ 57 void *hmac_hashctxt1; /* Hash function context 1. */ 58 void *hmac_hashctxt2; /* Hash function context 2. */ 59 }; 60 61 62 /* Prototypes. */ 63 struct HMAC_context *Curl_HMAC_init(const struct HMAC_params *hashparams, 64 const unsigned char *key, 65 unsigned int keylen); 66 int Curl_HMAC_update(struct HMAC_context *context, 67 const unsigned char *data, 68 unsigned int len); 69 int Curl_HMAC_final(struct HMAC_context *context, unsigned char *result); 70 71 CURLcode Curl_hmacit(const struct HMAC_params *hashparams, 72 const unsigned char *key, const size_t keylen, 73 const unsigned char *data, const size_t datalen, 74 unsigned char *output); 75 76 #endif 77 78 #endif /* HEADER_CURL_HMAC_H */ 79
