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/* crypto/rand/rand.h */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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 * All rights reserved.
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 *
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 * This package is an SSL implementation written
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 * by Eric Young (eay@cryptsoft.com).
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 * The implementation was written so as to conform with Netscapes SSL.
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 *
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 * This library is free for commercial and non-commercial use as long as
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 * the following conditions are aheared to.  The following conditions
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 * apply to all code found in this distribution, be it the RC4, RSA,
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 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
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 * included with this distribution is covered by the same copyright terms
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 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
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 *
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 * Copyright remains Eric Young's, and as such any Copyright notices in
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 * the code are not to be removed.
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 * If this package is used in a product, Eric Young should be given attribution
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 * as the author of the parts of the library used.
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 * This can be in the form of a textual message at program startup or
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 * in documentation (online or textual) provided with the package.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *    "This product includes cryptographic software written by
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 *     Eric Young (eay@cryptsoft.com)"
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 *    The word 'cryptographic' can be left out if the rouines from the library
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 *    being used are not cryptographic related :-).
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 * 4. If you include any Windows specific code (or a derivative thereof) from
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 *    the apps directory (application code) you must include an acknowledgement:
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 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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 *
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 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 * The licence and distribution terms for any publically available version or
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 * derivative of this code cannot be changed.  i.e. this code cannot simply be
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 * copied and put under another distribution licence
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 * [including the GNU Public Licence.]
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 */
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#ifndef HEADER_RAND_H
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# define HEADER_RAND_H
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# include <stdlib.h>
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# include <openssl/ossl_typ.h>
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# include <openssl/e_os2.h>
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# if defined(OPENSSL_SYS_WINDOWS)
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#  include <windows.h>
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# endif
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#ifdef  __cplusplus
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extern "C" {
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#endif
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# if defined(OPENSSL_FIPS)
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#  define FIPS_RAND_SIZE_T size_t
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# endif
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/* Already defined in ossl_typ.h */
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/* typedef struct rand_meth_st RAND_METHOD; */
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struct rand_meth_st {
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    void (*seed) (const void *buf, int num);
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    int (*bytes) (unsigned char *buf, int num);
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    void (*cleanup) (void);
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    void (*add) (const void *buf, int num, double entropy);
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    int (*pseudorand) (unsigned char *buf, int num);
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    int (*status) (void);
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};
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# ifdef BN_DEBUG
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extern int rand_predictable;
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# endif
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int RAND_set_rand_method(const RAND_METHOD *meth);
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const RAND_METHOD *RAND_get_rand_method(void);
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# ifndef OPENSSL_NO_ENGINE
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int RAND_set_rand_engine(ENGINE *engine);
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# endif
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RAND_METHOD *RAND_SSLeay(void);
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void RAND_cleanup(void);
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int RAND_bytes(unsigned char *buf, int num);
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int RAND_pseudo_bytes(unsigned char *buf, int num);
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void RAND_seed(const void *buf, int num);
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void RAND_add(const void *buf, int num, double entropy);
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int RAND_load_file(const char *file, long max_bytes);
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int RAND_write_file(const char *file);
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const char *RAND_file_name(char *file, size_t num);
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int RAND_status(void);
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int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes);
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int RAND_egd(const char *path);
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int RAND_egd_bytes(const char *path, int bytes);
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int RAND_poll(void);
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# if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_WIN32)
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void RAND_screen(void);
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int RAND_event(UINT, WPARAM, LPARAM);
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# endif
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# ifdef OPENSSL_FIPS
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void RAND_set_fips_drbg_type(int type, int flags);
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int RAND_init_fips(void);
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# endif
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/* BEGIN ERROR CODES */
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/*
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 * The following lines are auto generated by the script mkerr.pl. Any changes
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 * made after this point may be overwritten when the script is next run.
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 */
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void ERR_load_RAND_strings(void);
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/* Error codes for the RAND functions. */
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/* Function codes. */
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# define RAND_F_RAND_GET_RAND_METHOD                      101
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# define RAND_F_RAND_INIT_FIPS                            102
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# define RAND_F_SSLEAY_RAND_BYTES                         100
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/* Reason codes. */
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# define RAND_R_DUAL_EC_DRBG_DISABLED                     104
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# define RAND_R_ERROR_INITIALISING_DRBG                   102
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# define RAND_R_ERROR_INSTANTIATING_DRBG                  103
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# define RAND_R_NO_FIPS_RANDOM_METHOD_SET                 101
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# define RAND_R_PRNG_NOT_SEEDED                           100
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#ifdef  __cplusplus
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}
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#endif
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#endif