mcu/driver/che/include/des.h

/* Copyright (C) 1996 Eric Young (eay@mincom.oz.au)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@mincom.oz.au).
 * 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@mincom.oz.au).
 * 
 * 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@mincom.oz.au)"
 *    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@mincom.oz.au)"
 * 
 * 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.]
 */
 
/*****************************************************************************
 *
 * Filename:
 * ---------
 *    des.h
 *
 * Project:
 * --------
 *   Maui_Software
 *
 * Description:
 * ------------
 *   des software function.
 *
 * Author:
 * -------
 * -------
 *
 *============================================================================
 *             HISTORY
 * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *------------------------------------------------------------------------------
 * removed!
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 *------------------------------------------------------------------------------
 * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
 *============================================================================
 ****************************************************************************/

#ifndef __DES_H__
#define __DES_H__

#include "kal_general_types.h"

typedef kal_uint8 des_cblock[8];
typedef struct des_ks_struct{
   union{
      des_cblock _;
      kal_uint32 pad[2];
   } ks;
#undef _
#define _	ks._
} des_key_schedule[16];


#define DES_KEY_SZ 	(sizeof(des_cblock))
#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))

#define DES_ENCRYPT	1
#define DES_DECRYPT	0

#define DES_CBC_MODE	0
#define DES_PCBC_MODE	1

#define C_Block des_cblock
#define Key_schedule des_key_schedule


#define ITERATIONS 16
#define HALF_ITERATIONS 8

#define c2l(c,l)(l =((kal_uint32)(*((c)++)))    , \
		 l|=((kal_uint32)(*((c)++)))<< 8L, \
		 l|=((kal_uint32)(*((c)++)))<<16L, \
		 l|=((kal_uint32)(*((c)++)))<<24L)


#define l2c(l,c)(*((c)++)=(kal_uint8)(((l)     )&0xff), \
		 *((c)++)=(kal_uint8)(((l)>> 8L)&0xff), \
		 *((c)++)=(kal_uint8)(((l)>>16L)&0xff), \
		 *((c)++)=(kal_uint8)(((l)>>24L)&0xff))



#define	ROTATE(a,n)	(((a)>>(n))+((a)<<(32-(n))))

#define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g)
#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
	u=R^s[S  ]; \
	t=R^s[S+1]

#define D_ENCRYPT(LL,R,S) {\
	LOAD_DATA_tmp(R,S,u,t,E0,E1); \
	t=ROTATE(t,4); \
	LL^=\
		des_SPtrans[0][(u>> 2L)&0x3f]^ \
		des_SPtrans[2][(u>>10L)&0x3f]^ \
		des_SPtrans[4][(u>>18L)&0x3f]^ \
		des_SPtrans[6][(u>>26L)&0x3f]^ \
		des_SPtrans[1][(t>> 2L)&0x3f]^ \
		des_SPtrans[3][(t>>10L)&0x3f]^ \
		des_SPtrans[5][(t>>18L)&0x3f]^ \
		des_SPtrans[7][(t>>26L)&0x3f]; }
		
#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
	(b)^=(t),\
	(a)^=((t)<<(n)))

#define IP(l,r) \
	{ \
	register kal_uint32 tt; \
	PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
	PERM_OP(l,r,tt,16,0x0000ffffL); \
	PERM_OP(r,l,tt, 2,0x33333333L); \
	PERM_OP(l,r,tt, 8,0x00ff00ffL); \
	PERM_OP(r,l,tt, 1,0x55555555L); \
	}

#define FP(l,r) \
	{ \
	register kal_uint32 tt; \
	PERM_OP(l,r,tt, 1,0x55555555L); \
	PERM_OP(r,l,tt, 8,0x00ff00ffL); \
	PERM_OP(l,r,tt, 2,0x33333333L); \
	PERM_OP(r,l,tt,16,0x0000ffffL); \
	PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
	}


#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
	(a)=(a)^(t)^(t>>(16-(n))))



kal_int32 CHE_des_key_sched(des_cblock *key, des_key_schedule *schedule);
void CHE_des_ecb_encrypt(des_cblock *input, des_cblock *output, des_key_schedule *ks, kal_int32 encrypt);

#endif  //__DES_H__