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1/* $OpenBSD: rand.h,v 1.22 2014/10/22 14:02:52 jsing Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdlib.h>
60
61#ifndef HEADER_RAND_H
62#define HEADER_RAND_H
63
64#include <openssl/opensslconf.h>
65
66#include <openssl/ossl_typ.h>
67
68#ifdef __cplusplus
69extern "C" {
70#endif
71
72/* Already defined in ossl_typ.h */
73/* typedef struct rand_meth_st RAND_METHOD; */
74
75struct rand_meth_st {
76 void (*seed)(const void *buf, int num);
77 int (*bytes)(unsigned char *buf, int num);
78 void (*cleanup)(void);
79 void (*add)(const void *buf, int num, double entropy);
80 int (*pseudorand)(unsigned char *buf, int num);
81 int (*status)(void);
82};
83
84int RAND_set_rand_method(const RAND_METHOD *meth);
85const RAND_METHOD *RAND_get_rand_method(void);
86#ifndef OPENSSL_NO_ENGINE
87int RAND_set_rand_engine(ENGINE *engine);
88#endif
89RAND_METHOD *RAND_SSLeay(void);
90
91#ifndef LIBRESSL_INTERNAL
92void RAND_cleanup(void );
93int RAND_bytes(unsigned char *buf, int num);
94int RAND_pseudo_bytes(unsigned char *buf, int num);
95void RAND_seed(const void *buf, int num);
96void RAND_add(const void *buf, int num, double entropy);
97int RAND_load_file(const char *file, long max_bytes);
98int RAND_write_file(const char *file);
99const char *RAND_file_name(char *file, size_t num);
100int RAND_status(void);
101int RAND_poll(void);
102#endif
103
104/* BEGIN ERROR CODES */
105/* The following lines are auto generated by the script mkerr.pl. Any changes
106 * made after this point may be overwritten when the script is next run.
107 */
108void ERR_load_RAND_strings(void);
109
110/* Error codes for the RAND functions. (no longer used) */
111
112/* Function codes. */
113#define RAND_F_RAND_GET_RAND_METHOD 101
114#define RAND_F_RAND_INIT_FIPS 102
115#define RAND_F_SSLEAY_RAND_BYTES 100
116
117/* Reason codes. */
118#define RAND_R_DUAL_EC_DRBG_DISABLED 104
119#define RAND_R_ERROR_INITIALISING_DRBG 102
120#define RAND_R_ERROR_INSTANTIATING_DRBG 103
121#define RAND_R_NO_FIPS_RANDOM_METHOD_SET 101
122#define RAND_R_PRNG_NOT_SEEDED 100
123
124#ifdef __cplusplus
125}
126#endif
127#endif