1 #ifndef HEADER_CURL_RAND_H 2 #define HEADER_CURL_RAND_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2020, 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 ***************************************************************************/ 24 25 /* 26 * Curl_rand() stores 'num' number of random unsigned characters in the buffer 27 * 'rnd' points to. 28 * 29 * If libcurl is built without TLS support or with a TLS backend that lacks a 30 * proper random API (Gskit or mbedTLS), this function will use "weak" random. 31 * 32 * When built *with* TLS support and a backend that offers strong random, it 33 * will return error if it cannot provide strong random values. 34 * 35 * NOTE: 'data' may be passed in as NULL when coming from external API without 36 * easy handle! 37 * 38 */ 39 CURLcode Curl_rand(struct Curl_easy *data, unsigned char *rnd, size_t num); 40 41 /* 42 * Curl_rand_hex() fills the 'rnd' buffer with a given 'num' size with random 43 * hexadecimal digits PLUS a zero terminating byte. It must be an odd number 44 * size. 45 */ 46 CURLcode Curl_rand_hex(struct Curl_easy *data, unsigned char *rnd, 47 size_t num); 48 49 #endif /* HEADER_CURL_RAND_H */ 50