1#ifndef HEADER_CURL_RAND_H
2#define HEADER_CURL_RAND_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2019, 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.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/*
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 */
39CURLcode 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 */
46CURLcode Curl_rand_hex(struct Curl_easy *data, unsigned char *rnd,
47 size_t num);
48
49#endif /* HEADER_CURL_RAND_H */
50