/*

* Portions Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

* The original NIST Statistical Test Suite code is placed in public domain.

* (http://csrc.nist.gov/groups/ST/toolkit/rng/documentation_software.html) 

* 

* This software was developed at the National Institute of Standards and Technology by 

* employees of the Federal Government in the course of their official duties. Pursuant

* to title 17 Section 105 of the United States Code this software is not subject to 

* copyright protection and is in the public domain. The NIST Statistical Test Suite is

* an experimental system. NIST assumes no responsibility whatsoever for its use by other 

* parties, and makes no guarantees, expressed or implied, about its quality, reliability, 

* or any other characteristic. We would appreciate acknowledgment if the software is used.

*/

#ifndef _GENERATORS_H_

#define _GENERATORS_H_

//#include	"../include/sha.h"

void	lcg();

double	lcg_rand(int, double, double*, int);

void	quadRes1();

void	quadRes2();

void	cubicRes();

void	exclusiveOR();

void	modExp();

void	bbs();

void	micali_schnorr();

void	SHA1();

void    HASH_DRBG();

/* The circular shifts. */

#define CS1(x) ((((ULONG)x)<<1)|(((ULONG)x)>>31))

#define CS5(x)  ((((ULONG)x)<<5)|(((ULONG)x)>>27))

#define CS30(x)  ((((ULONG)x)<<30)|(((ULONG)x)>>2))

/* K constants */

#define K0  0x5a827999L

#define K1  0x6ed9eba1L

#define K2  0x8f1bbcdcL

#define K3  0xca62c1d6L

#define f1(x,y,z)   ( (x & (y ^ z)) ^ z )

#define f3(x,y,z)   ( (x & ( y ^ z )) ^ (z & y) )

#define f2(x,y,z)   ( x ^ y ^ z )                           /* Rounds 20-39 */

#define  expand(x)  Wbuff[x%16] = CS1(Wbuff[(x - 3)%16 ] ^ Wbuff[(x - 8)%16 ] ^ Wbuff[(x - 14)%16] ^ Wbuff[x%16])

#define sub1Round1(count)      { \

	 temp = CS5(A) + f1(B, C, D) + E + Wbuff[count] + K0; \

	 E = D; \

	 D = C; \

	 C = CS30( B ); \

	 B = A; \

	 A = temp; \

	 } \

#define sub2Round1(count)   \

	 { \

	 expand(count); \

	 temp = CS5(A) + f1(B, C, D) + E + Wbuff[count%16] + K0; \

	 E = D; \

	 D = C; \

	 C = CS30( B ); \

	 B = A; \

	 A = temp; \

	} \

#define Round2(count)     \

	 { \

	 expand(count); \

	 temp = CS5( A ) + f2( B, C, D ) + E + Wbuff[count%16] + K1;  \

	 E = D; \

	 D = C; \

	 C = CS30( B ); \

	 B = A; \

	 A = temp;  \

	 } \

#define Round3(count)    \

	 { \

	 expand(count); \

	 temp = CS5( A ) + f3( B, C, D ) + E + Wbuff[count%16] + K2; \

	 E = D; \

	 D = C; \

	 C = CS30( B ); \

	 B = A; \

	 A = temp; \

	 }

#define Round4(count)    \

	 { \

	 expand(count); \

	 temp = CS5( A ) + f2( B, C, D ) + E + Wbuff[count%16] + K3; \

	 E = D; \

	 D = C; \

	 C = CS30( B ); \

	 B = A; \

	 A = temp; \

	 }

#endif