1 /* crypto/rand/rand.h */
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 #ifndef HEADER_RAND_H
60 #define HEADER_RAND_H
61
62 #include <stdlib.h>
63 #include <openssl/ossl_typ.h>
64 #include <openssl/e_os2.h>
65
66 #if defined(OPENSSL_SYS_WINDOWS)
67 #include <windows.h>
68 #endif
69
70 #ifdef __cplusplus
71 extern "C" {
72 #endif
73
74 #if defined(OPENSSL_FIPS)
75 #define FIPS_RAND_SIZE_T size_t
76 #endif
77
78 /* Already defined in ossl_typ.h */
79 /* typedef struct rand_meth_st RAND_METHOD; */
80
81 struct rand_meth_st
82 {
83 void (*seed)(const void *buf, int num);
84 int (*bytes)(unsigned char *buf, int num);
85 void (*cleanup)(void);
86 void (*add)(const void *buf, int num, double entropy);
87 int (*pseudorand)(unsigned char *buf, int num);
88 int (*status)(void);
89 };
90
91 #ifdef BN_DEBUG
92 extern int rand_predictable;
93 #endif
94
95 int RAND_set_rand_method(const RAND_METHOD *meth);
96 const RAND_METHOD *RAND_get_rand_method(void);
97 #ifndef OPENSSL_NO_ENGINE
98 int RAND_set_rand_engine(ENGINE *engine);
99 #endif
100 RAND_METHOD *RAND_SSLeay(void);
101 void RAND_cleanup(void );
102 int RAND_bytes(unsigned char *buf,int num);
103 int RAND_pseudo_bytes(unsigned char *buf,int num);
104 void RAND_seed(const void *buf,int num);
105 void RAND_add(const void *buf,int num,double entropy);
106 int RAND_load_file(const char *file,long max_bytes);
107 int RAND_write_file(const char *file);
108 const char *RAND_file_name(char *file,size_t num);
109 int RAND_status(void);
110 int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);
111 int RAND_egd(const char *path);
112 int RAND_egd_bytes(const char *path,int bytes);
113 int RAND_poll(void);
114
115 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
116
117 void RAND_screen(void);
118 int RAND_event(UINT, WPARAM, LPARAM);
119
120 #endif
121
122 #ifdef OPENSSL_FIPS
123 void RAND_set_fips_drbg_type(int type, int flags);
124 int RAND_init_fips(void);
125 #endif
126
127 /* BEGIN ERROR CODES */
128 /* The following lines are auto generated by the script mkerr.pl. Any changes
129 * made after this point may be overwritten when the script is next run.
130 */
131 void ERR_load_RAND_strings(void);
132
133 /* Error codes for the RAND functions. */
134
135 /* Function codes. */
136 #define RAND_F_RAND_GET_RAND_METHOD 101
137 #define RAND_F_RAND_INIT_FIPS 102
138 #define RAND_F_SSLEAY_RAND_BYTES 100
139
140 /* Reason codes. */
141 #define RAND_R_DUAL_EC_DRBG_DISABLED 104
142 #define RAND_R_ERROR_INITIALISING_DRBG 102
143 #define RAND_R_ERROR_INSTANTIATING_DRBG 103
144 #define RAND_R_NO_FIPS_RANDOM_METHOD_SET 101
145 #define RAND_R_PRNG_NOT_SEEDED 100
146
147 #ifdef __cplusplus
148 }
149 #endif
150 #endif