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/* RAND_bytes writes |len| bytes of random data to |buf|. It returns one on 26 * success and zero on otherwise. */ 27OPENSSL_EXPORT int RAND_bytes(uint8_t *buf, size_t len); 28 29/* RAND_cleanup frees any resources used by the RNG. This is not safe if other 30 * threads might still be calling |RAND_bytes|. */ 31OPENSSL_EXPORT void RAND_cleanup(void); 32 33 34/* Deprecated functions */ 35 36/* RAND_pseudo_bytes is a wrapper around |RAND_bytes|. */ 37OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len); 38 39/* RAND_seed does nothing. */ 40OPENSSL_EXPORT void RAND_seed(const void *buf, int num); 41 42/* RAND_add does nothing. */ 43OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy); 44 45/* RAND_poll returns one. */ 46OPENSSL_EXPORT int RAND_poll(void); 47 48 49#if defined(__cplusplus) 50} /* extern C */ 51#endif 52 53#endif /* OPENSSL_HEADER_RAND_H */ 54