2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
10 #ifndef OPENSSL_RAND_H
11 # define OPENSSL_RAND_H
14 # include <openssl/macros.h>
15 # ifndef OPENSSL_NO_DEPRECATED_3_0
16 # define HEADER_RAND_H
20 # include <openssl/types.h>
21 # include <openssl/e_os2.h>
22 # include <openssl/randerr.h>
29 int (*seed) (const void *buf, int num);
30 int (*bytes) (unsigned char *buf, int num);
31 void (*cleanup) (void);
32 int (*add) (const void *buf, int num, double randomness);
33 int (*pseudorand) (unsigned char *buf, int num);
37 int RAND_set_rand_method(const RAND_METHOD *meth);
38 const RAND_METHOD *RAND_get_rand_method(void);
39 # ifndef OPENSSL_NO_ENGINE
40 int RAND_set_rand_engine(ENGINE *engine);
43 RAND_METHOD *RAND_OpenSSL(void);
45 # ifndef OPENSSL_NO_DEPRECATED_1_1_0
46 # define RAND_cleanup() while(0) continue
48 int RAND_bytes(unsigned char *buf, int num);
49 int RAND_priv_bytes(unsigned char *buf, int num);
51 /* Equivalent of RAND_priv_bytes() but additionally taking an OPENSSL_CTX */
52 int RAND_priv_bytes_ex(OPENSSL_CTX *ctx, unsigned char *buf, int num);
54 /* Equivalent of RAND_bytes() but additionally taking an OPENSSL_CTX */
55 int RAND_bytes_ex(OPENSSL_CTX *ctx, unsigned char *buf, int num);
57 DEPRECATEDIN_1_1_0(int RAND_pseudo_bytes(unsigned char *buf, int num))
59 void RAND_seed(const void *buf, int num);
60 void RAND_keep_random_devices_open(int keep);
62 # if defined(__ANDROID__) && defined(__NDK_FPABI__)
63 __NDK_FPABI__ /* __attribute__((pcs("aapcs"))) on ARM */
65 void RAND_add(const void *buf, int num, double randomness);
66 int RAND_load_file(const char *file, long max_bytes);
67 int RAND_write_file(const char *file);
68 const char *RAND_file_name(char *file, size_t num);
69 int RAND_status(void);
71 # ifndef OPENSSL_NO_EGD
72 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);
73 int RAND_egd(const char *path);
74 int RAND_egd_bytes(const char *path, int bytes);
79 # if defined(_WIN32) && (defined(BASETYPES) || defined(_WINDEF_H))
80 /* application has to include <windows.h> in order to use these */
81 DEPRECATEDIN_1_1_0(void RAND_screen(void))
82 DEPRECATEDIN_1_1_0(int RAND_event(UINT, WPARAM, LPARAM))