1 #ifndef HEADER_CURL_HMAC_H 2 #define HEADER_CURL_HMAC_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2010, Daniel Stenberg, <daniel (at) 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 http://curl.haxx.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 ***************************************************************************/ 24 25 #ifndef CURL_DISABLE_CRYPTO_AUTH 26 27 typedef void (* HMAC_hinit_func)(void * context); 28 typedef void (* HMAC_hupdate_func)(void * context, 29 const unsigned char * data, 30 unsigned int len); 31 typedef void (* HMAC_hfinal_func)(unsigned char * result, void * context); 32 33 34 /* Per-hash function HMAC parameters. */ 35 36 typedef struct { 37 HMAC_hinit_func hmac_hinit; /* Initialize context procedure. */ 38 HMAC_hupdate_func hmac_hupdate; /* Update context with data. */ 39 HMAC_hfinal_func hmac_hfinal; /* Get final result procedure. */ 40 unsigned int hmac_ctxtsize; /* Context structure size. */ 41 unsigned int hmac_maxkeylen; /* Maximum key length (bytes). */ 42 unsigned int hmac_resultlen; /* Result length (bytes). */ 43 } HMAC_params; 44 45 46 /* HMAC computation context. */ 47 48 typedef struct { 49 const HMAC_params * hmac_hash; /* Hash function definition. */ 50 void * hmac_hashctxt1; /* Hash function context 1. */ 51 void * hmac_hashctxt2; /* Hash function context 2. */ 52 } HMAC_context; 53 54 55 /* Prototypes. */ 56 57 HMAC_context * Curl_HMAC_init(const HMAC_params * hashparams, 58 const unsigned char * key, 59 unsigned int keylen); 60 int Curl_HMAC_update(HMAC_context * context, 61 const unsigned char * data, 62 unsigned int len); 63 int Curl_HMAC_final(HMAC_context * context, unsigned char * result); 64 65 #endif 66 67 #endif /* HEADER_CURL_HMAC_H */ 68
