/* crypto/rand/rand.h */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *   notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *   must display the following acknowledgement:
 *   "This product includes cryptographic software written by
 *    Eric Young (eay@cryptsoft.com)"
 *   The word 'cryptographic' can be left out if the rouines from the library
 *   being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *   the apps directory (application code) you must include an acknowledgement:
 *   "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

module deimos.openssl.rand;

import deimos.openssl._d_util;

import core.stdc.stdlib;
public import deimos.openssl.ossl_typ;
public import deimos.openssl.e_os2;

version (Win32) {
	import core.sys.windows.windows;
} else version (Win64) {
	import core.sys.windows.windows;
}

extern (C):
nothrow:

version (OPENSSL_FIPS) {
alias size_t FIPS_RAND_SIZE_T;
}

/* Already defined in ossl_typ.h */
/* typedef rand_meth_st RAND_METHOD; */

struct rand_meth_st
	{
	ExternC!(void function(const(void)* buf, int num)) seed;
	ExternC!(int function(ubyte* buf, int num)) bytes;
	ExternC!(void function()) cleanup;
	ExternC!(void function(const(void)* buf, int num, double entropy)) add;
	ExternC!(int function(ubyte* buf, int num)) pseudorand;
	ExternC!(int function()) status;
	};

version (BN_DEBUG) {
extern int rand_predictable;
}

int RAND_set_rand_method(const(RAND_METHOD)* meth);
const(RAND_METHOD)* RAND_get_rand_method();
version(OPENSSL_NO_ENGINE) {} else {
int RAND_set_rand_engine(ENGINE* engine);
}
RAND_METHOD* RAND_SSLeay();
void RAND_cleanup();
int  RAND_bytes(ubyte* buf,int num);
int  RAND_pseudo_bytes(ubyte* buf,int num);
void RAND_seed(const(void)* buf,int num);
void RAND_add(const(void)* buf,int num,double entropy);
int  RAND_load_file(const(char)* file,c_long max_bytes);
int  RAND_write_file(const(char)* file);
const(char)* RAND_file_name(char* file,size_t num);
int RAND_status();
int RAND_query_egd_bytes(const(char)* path, ubyte* buf, int bytes);
int RAND_egd(const(char)* path);
int RAND_egd_bytes(const(char)* path,int bytes);
int RAND_poll();

version (Win32) {
void RAND_screen();
int RAND_event(UINT, WPARAM, LPARAM);
} else version (Win64) {
void RAND_screen();
int RAND_event(UINT, WPARAM, LPARAM);
}

version(OPENSSL_FIPS) {
void RAND_set_fips_drbg_type(int type, int flags);
int RAND_init_fips(void);
}

/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
 * made after this point may be overwritten when the script is next run.
 */
void ERR_load_RAND_strings();

/* Error codes for the RAND functions. */

/* Function codes. */
enum RAND_F_RAND_GET_RAND_METHOD = 101;
enum RAND_F_RAND_INIT_FIPS = 102;
enum RAND_F_SSLEAY_RAND_BYTES = 100;

/* Reason codes. */
enum RAND_R_DUAL_EC_DRBG_DISABLED = 104;
enum RAND_R_ERROR_INITIALISING_DRBG = 102;
enum RAND_R_ERROR_INSTANTIATING_DRBG = 103;
enum RAND_R_NO_FIPS_RANDOM_METHOD_SET = 101;
enum RAND_R_PRNG_NOT_SEEDED = 100;