1 /* crypto/rand/rand.h */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 /* BEGIN ERROR CODES */ 123 /* The following lines are auto generated by the script mkerr.pl. Any changes 124 * made after this point may be overwritten when the script is next run. 125 */ 126 void ERR_load_RAND_strings(void); 127 128 /* Error codes for the RAND functions. */ 129 130 /* Function codes. */ 131 #define RAND_F_RAND_GET_RAND_METHOD 101 132 #define RAND_F_SSLEAY_RAND_BYTES 100 133 134 /* Reason codes. */ 135 #define RAND_R_PRNG_NOT_SEEDED 100 136 137 #ifdef __cplusplus 138 } 139 #endif 140 #endif 141
