1/* Copyright (c) 2014, Google Inc. 2 * 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. 6 * 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. */ 14 15#ifndef OPENSSL_HEADER_RAND_H 16#define OPENSSL_HEADER_RAND_H 17 18#include <openssl/base.h> 19 20#if defined(__cplusplus) 21extern "C" { 22#endif 23 24 25/* Random number generation. */ 26 27 28/* RAND_bytes writes |len| bytes of random data to |buf| and returns one. */ 29OPENSSL_EXPORT int RAND_bytes(uint8_t *buf, size_t len); 30 31/* RAND_cleanup frees any resources used by the RNG. This is not safe if other 32 * threads might still be calling |RAND_bytes|. */ 33OPENSSL_EXPORT void RAND_cleanup(void); 34 35 36/* Deprecated functions */ 37 38/* RAND_pseudo_bytes is a wrapper around |RAND_bytes|. */ 39OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len); 40 41/* RAND_seed does nothing. */ 42OPENSSL_EXPORT void RAND_seed(const void *buf, int num); 43 44/* RAND_load_file returns a nonnegative number. */ 45OPENSSL_EXPORT int RAND_load_file(const char *path, long num); 46 47/* RAND_add does nothing. */ 48OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy); 49 50/* RAND_poll returns one. */ 51OPENSSL_EXPORT int RAND_poll(void); 52 53/* RAND_status returns one. */ 54OPENSSL_EXPORT int RAND_status(void); 55 56 57#if defined(__cplusplus) 58} /* extern C */ 59#endif 60 61#endif /* OPENSSL_HEADER_RAND_H */ 62