1 /* $OpenBSD: rand.h,v 1.25 2024/04/10 14:53:01 beck 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 69 extern "C" { 70 #endif 71 72 /* Already defined in ossl_typ.h */ 73 /* typedef struct rand_meth_st RAND_METHOD; */ 74 75 struct 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 84 int RAND_set_rand_method(const RAND_METHOD *meth); 85 const RAND_METHOD *RAND_get_rand_method(void); 86 RAND_METHOD *RAND_SSLeay(void); 87 88 void RAND_cleanup(void ); 89 int RAND_bytes(unsigned char *buf, int num); 90 int RAND_pseudo_bytes(unsigned char *buf, int num); 91 void RAND_seed(const void *buf, int num); 92 void RAND_add(const void *buf, int num, double entropy); 93 int RAND_load_file(const char *file, long max_bytes); 94 int RAND_write_file(const char *file); 95 const char *RAND_file_name(char *file, size_t num); 96 int RAND_status(void); 97 int RAND_poll(void); 98 99 void ERR_load_RAND_strings(void); 100 101 /* Error codes for the RAND functions. (no longer used) */ 102 103 /* Function codes. */ 104 #define RAND_F_RAND_GET_RAND_METHOD 101 105 #define RAND_F_RAND_INIT_FIPS 102 106 #define RAND_F_SSLEAY_RAND_BYTES 100 107 108 /* Reason codes. */ 109 #define RAND_R_DUAL_EC_DRBG_DISABLED 104 110 #define RAND_R_ERROR_INITIALISING_DRBG 102 111 #define RAND_R_ERROR_INSTANTIATING_DRBG 103 112 #define RAND_R_NO_FIPS_RANDOM_METHOD_SET 101 113 #define RAND_R_PRNG_NOT_SEEDED 100 114 115 #ifdef __cplusplus 116 } 117 #endif 118 #endif 119