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) 21 extern "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. */ 29 OPENSSL_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|. */ 33 OPENSSL_EXPORT void RAND_cleanup(void); 34 35 36 /* Deprecated functions */ 37 38 /* RAND_pseudo_bytes is a wrapper around |RAND_bytes|. */ 39 OPENSSL_EXPORT int RAND_pseudo_bytes(uint8_t *buf, size_t len); 40 41 /* RAND_seed does nothing. */ 42 OPENSSL_EXPORT void RAND_seed(const void *buf, int num); 43 44 /* RAND_load_file returns a nonnegative number. */ 45 OPENSSL_EXPORT int RAND_load_file(const char *path, long num); 46 47 /* RAND_add does nothing. */ 48 OPENSSL_EXPORT void RAND_add(const void *buf, int num, double entropy); 49 50 /* RAND_poll returns one. */ 51 OPENSSL_EXPORT int RAND_poll(void); 52 53 /* RAND_status returns one. */ 54 OPENSSL_EXPORT int RAND_status(void); 55 56 57 #if defined(__cplusplus) 58 } /* extern C */ 59 #endif 60 61 #endif /* OPENSSL_HEADER_RAND_H */ 62