1 /* Copyright (c) 2014, Google Inc.
3 * Permission to use, copy, modify, and/or distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
15 #ifndef OPENSSL_HEADER_RAND_H
16 #define OPENSSL_HEADER_RAND_H
18 #include <openssl/base.h>
20 #if defined(__cplusplus)
25 /* RAND_bytes writes |len| bytes of random data to |buf|. It returns one on
26 * success and zero on otherwise. */
27 OPENSSL_EXPORT int RAND_bytes(uint8_t *buf, size_t len);
29 /* RAND_cleanup frees any resources used by the RNG. This is not safe if other
30 * threads might still be calling |RAND_bytes|. */
31 OPENSSL_EXPORT void RAND_cleanup(void);
34 /* Deprecated functions */
36 /* RAND_pseudo_bytes is a wrapper around |RAND_bytes|. */
37 OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len);
39 /* RAND_seed does nothing. */
40 OPENSSL_EXPORT void RAND_seed(const void *buf, int num);
42 /* RAND_add does nothing. */
43 OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy);
45 /* RAND_poll returns one. */
46 OPENSSL_EXPORT int RAND_poll(void);
49 #if defined(__cplusplus)
53 #endif /* OPENSSL_HEADER_RAND_H */