1 /* 2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef HEADER_RAND_H 11 # define HEADER_RAND_H 12 13 # include <stdlib.h> 14 # include <openssl/ossl_typ.h> 15 # include <openssl/e_os2.h> 16 # include <openssl/randerr.h> 17 18 #ifdef __cplusplus 19 extern "C" { 20 #endif 21 22 struct rand_meth_st { 23 int (*seed) (const void *buf, int num); 24 int (*bytes) (unsigned char *buf, int num); 25 void (*cleanup) (void); 26 int (*add) (const void *buf, int num, double randomness); 27 int (*pseudorand) (unsigned char *buf, int num); 28 int (*status) (void); 29 }; 30 31 int RAND_set_rand_method(const RAND_METHOD *meth); 32 const RAND_METHOD *RAND_get_rand_method(void); 33 # ifndef OPENSSL_NO_ENGINE 34 int RAND_set_rand_engine(ENGINE *engine); 35 # endif 36 37 RAND_METHOD *RAND_OpenSSL(void); 38 39 # if OPENSSL_API_COMPAT < 0x10100000L 40 # define RAND_cleanup() while(0) continue 41 # endif 42 int RAND_bytes(unsigned char *buf, int num); 43 int RAND_priv_bytes(unsigned char *buf, int num); 44 DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num)) 45 46 void RAND_seed(const void *buf, int num); 47 void RAND_keep_random_devices_open(int keep); 48 49 # if defined(__ANDROID__) && defined(__NDK_FPABI__) 50 __NDK_FPABI__ /* __attribute__((pcs("aapcs"))) on ARM */ 51 # endif 52 void RAND_add(const void *buf, int num, double randomness); 53 int RAND_load_file(const char *file, long max_bytes); 54 int RAND_write_file(const char *file); 55 const char *RAND_file_name(char *file, size_t num); 56 int RAND_status(void); 57 58 # ifndef OPENSSL_NO_EGD 59 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes); 60 int RAND_egd(const char *path); 61 int RAND_egd_bytes(const char *path, int bytes); 62 # endif 63 64 int RAND_poll(void); 65 66 # if defined(_WIN32) && (defined(BASETYPES) || defined(_WINDEF_H)) 67 /* application has to include <windows.h> in order to use these */ 68 DEPRECATEDIN_1_1_0(void RAND_screen(void)) 69 DEPRECATEDIN_1_1_0(int RAND_event(UINT, WPARAM, LPARAM)) 70 # endif 71 72 73 #ifdef __cplusplus 74 } 75 #endif 76 77 #endif 78