sl@0: /* crypto/des/des_enc.c */
sl@0: /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * This package is an SSL implementation written
sl@0:  * by Eric Young (eay@cryptsoft.com).
sl@0:  * The implementation was written so as to conform with Netscapes SSL.
sl@0:  * 
sl@0:  * This library is free for commercial and non-commercial use as long as
sl@0:  * the following conditions are aheared to.  The following conditions
sl@0:  * apply to all code found in this distribution, be it the RC4, RSA,
sl@0:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
sl@0:  * included with this distribution is covered by the same copyright terms
sl@0:  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
sl@0:  * 
sl@0:  * Copyright remains Eric Young's, and as such any Copyright notices in
sl@0:  * the code are not to be removed.
sl@0:  * If this package is used in a product, Eric Young should be given attribution
sl@0:  * as the author of the parts of the library used.
sl@0:  * This can be in the form of a textual message at program startup or
sl@0:  * in documentation (online or textual) provided with the package.
sl@0:  * 
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 3. All advertising materials mentioning features or use of this software
sl@0:  *    must display the following acknowledgement:
sl@0:  *    "This product includes cryptographic software written by
sl@0:  *     Eric Young (eay@cryptsoft.com)"
sl@0:  *    The word 'cryptographic' can be left out if the rouines from the library
sl@0:  *    being used are not cryptographic related :-).
sl@0:  * 4. If you include any Windows specific code (or a derivative thereof) from 
sl@0:  *    the apps directory (application code) you must include an acknowledgement:
sl@0:  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
sl@0:  * 
sl@0:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0:  * 
sl@0:  * The licence and distribution terms for any publically available version or
sl@0:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
sl@0:  * copied and put under another distribution licence
sl@0:  * [including the GNU Public Licence.]
sl@0:  */
sl@0: 
sl@0: #include "des_locl.h"
sl@0: 
sl@0: EXPORT_C void DES_encrypt1(DES_LONG *data, DES_key_schedule *ks, int enc)
sl@0: 	{
sl@0: 	register DES_LONG l,r,t,u;
sl@0: #ifdef DES_PTR
sl@0: 	register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans;
sl@0: #endif
sl@0: #ifndef DES_UNROLL
sl@0: 	register int i;
sl@0: #endif
sl@0: 	register DES_LONG *s;
sl@0: 
sl@0: 	r=data[0];
sl@0: 	l=data[1];
sl@0: 
sl@0: 	IP(r,l);
sl@0: 	/* Things have been modified so that the initial rotate is
sl@0: 	 * done outside the loop.  This required the
sl@0: 	 * DES_SPtrans values in sp.h to be rotated 1 bit to the right.
sl@0: 	 * One perl script later and things have a 5% speed up on a sparc2.
sl@0: 	 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
sl@0: 	 * for pointing this out. */
sl@0: 	/* clear the top bits on machines with 8byte longs */
sl@0: 	/* shift left by 2 */
sl@0: 	r=ROTATE(r,29)&0xffffffffL;
sl@0: 	l=ROTATE(l,29)&0xffffffffL;
sl@0: 
sl@0: 	s=ks->ks->deslong;
sl@0: 	/* I don't know if it is worth the effort of loop unrolling the
sl@0: 	 * inner loop */
sl@0: 	if (enc)
sl@0: 		{
sl@0: #ifdef DES_UNROLL
sl@0: 		D_ENCRYPT(l,r, 0); /*  1 */
sl@0: 		D_ENCRYPT(r,l, 2); /*  2 */
sl@0: 		D_ENCRYPT(l,r, 4); /*  3 */
sl@0: 		D_ENCRYPT(r,l, 6); /*  4 */
sl@0: 		D_ENCRYPT(l,r, 8); /*  5 */
sl@0: 		D_ENCRYPT(r,l,10); /*  6 */
sl@0: 		D_ENCRYPT(l,r,12); /*  7 */
sl@0: 		D_ENCRYPT(r,l,14); /*  8 */
sl@0: 		D_ENCRYPT(l,r,16); /*  9 */
sl@0: 		D_ENCRYPT(r,l,18); /*  10 */
sl@0: 		D_ENCRYPT(l,r,20); /*  11 */
sl@0: 		D_ENCRYPT(r,l,22); /*  12 */
sl@0: 		D_ENCRYPT(l,r,24); /*  13 */
sl@0: 		D_ENCRYPT(r,l,26); /*  14 */
sl@0: 		D_ENCRYPT(l,r,28); /*  15 */
sl@0: 		D_ENCRYPT(r,l,30); /*  16 */
sl@0: #else
sl@0: 		for (i=0; i<32; i+=8)
sl@0: 			{
sl@0: 			D_ENCRYPT(l,r,i+0); /*  1 */
sl@0: 			D_ENCRYPT(r,l,i+2); /*  2 */
sl@0: 			D_ENCRYPT(l,r,i+4); /*  3 */
sl@0: 			D_ENCRYPT(r,l,i+6); /*  4 */
sl@0: 			}
sl@0: #endif
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: #ifdef DES_UNROLL
sl@0: 		D_ENCRYPT(l,r,30); /* 16 */
sl@0: 		D_ENCRYPT(r,l,28); /* 15 */
sl@0: 		D_ENCRYPT(l,r,26); /* 14 */
sl@0: 		D_ENCRYPT(r,l,24); /* 13 */
sl@0: 		D_ENCRYPT(l,r,22); /* 12 */
sl@0: 		D_ENCRYPT(r,l,20); /* 11 */
sl@0: 		D_ENCRYPT(l,r,18); /* 10 */
sl@0: 		D_ENCRYPT(r,l,16); /*  9 */
sl@0: 		D_ENCRYPT(l,r,14); /*  8 */
sl@0: 		D_ENCRYPT(r,l,12); /*  7 */
sl@0: 		D_ENCRYPT(l,r,10); /*  6 */
sl@0: 		D_ENCRYPT(r,l, 8); /*  5 */
sl@0: 		D_ENCRYPT(l,r, 6); /*  4 */
sl@0: 		D_ENCRYPT(r,l, 4); /*  3 */
sl@0: 		D_ENCRYPT(l,r, 2); /*  2 */
sl@0: 		D_ENCRYPT(r,l, 0); /*  1 */
sl@0: #else
sl@0: 		for (i=30; i>0; i-=8)
sl@0: 			{
sl@0: 			D_ENCRYPT(l,r,i-0); /* 16 */
sl@0: 			D_ENCRYPT(r,l,i-2); /* 15 */
sl@0: 			D_ENCRYPT(l,r,i-4); /* 14 */
sl@0: 			D_ENCRYPT(r,l,i-6); /* 13 */
sl@0: 			}
sl@0: #endif
sl@0: 		}
sl@0: 
sl@0: 	/* rotate and clear the top bits on machines with 8byte longs */
sl@0: 	l=ROTATE(l,3)&0xffffffffL;
sl@0: 	r=ROTATE(r,3)&0xffffffffL;
sl@0: 
sl@0: 	FP(r,l);
sl@0: 	data[0]=l;
sl@0: 	data[1]=r;
sl@0: 	l=r=t=u=0;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void DES_encrypt2(DES_LONG *data, DES_key_schedule *ks, int enc)
sl@0: 	{
sl@0: 	register DES_LONG l,r,t,u;
sl@0: #ifdef DES_PTR
sl@0: 	register const unsigned char *des_SP=(const unsigned char *)DES_SPtrans;
sl@0: #endif
sl@0: #ifndef DES_UNROLL
sl@0: 	register int i;
sl@0: #endif
sl@0: 	register DES_LONG *s;
sl@0: 
sl@0: 	r=data[0];
sl@0: 	l=data[1];
sl@0: 
sl@0: 	/* Things have been modified so that the initial rotate is
sl@0: 	 * done outside the loop.  This required the
sl@0: 	 * DES_SPtrans values in sp.h to be rotated 1 bit to the right.
sl@0: 	 * One perl script later and things have a 5% speed up on a sparc2.
sl@0: 	 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
sl@0: 	 * for pointing this out. */
sl@0: 	/* clear the top bits on machines with 8byte longs */
sl@0: 	r=ROTATE(r,29)&0xffffffffL;
sl@0: 	l=ROTATE(l,29)&0xffffffffL;
sl@0: 
sl@0: 	s=ks->ks->deslong;
sl@0: 	/* I don't know if it is worth the effort of loop unrolling the
sl@0: 	 * inner loop */
sl@0: 	if (enc)
sl@0: 		{
sl@0: #ifdef DES_UNROLL
sl@0: 		D_ENCRYPT(l,r, 0); /*  1 */
sl@0: 		D_ENCRYPT(r,l, 2); /*  2 */
sl@0: 		D_ENCRYPT(l,r, 4); /*  3 */
sl@0: 		D_ENCRYPT(r,l, 6); /*  4 */
sl@0: 		D_ENCRYPT(l,r, 8); /*  5 */
sl@0: 		D_ENCRYPT(r,l,10); /*  6 */
sl@0: 		D_ENCRYPT(l,r,12); /*  7 */
sl@0: 		D_ENCRYPT(r,l,14); /*  8 */
sl@0: 		D_ENCRYPT(l,r,16); /*  9 */
sl@0: 		D_ENCRYPT(r,l,18); /*  10 */
sl@0: 		D_ENCRYPT(l,r,20); /*  11 */
sl@0: 		D_ENCRYPT(r,l,22); /*  12 */
sl@0: 		D_ENCRYPT(l,r,24); /*  13 */
sl@0: 		D_ENCRYPT(r,l,26); /*  14 */
sl@0: 		D_ENCRYPT(l,r,28); /*  15 */
sl@0: 		D_ENCRYPT(r,l,30); /*  16 */
sl@0: #else
sl@0: 		for (i=0; i<32; i+=8)
sl@0: 			{
sl@0: 			D_ENCRYPT(l,r,i+0); /*  1 */
sl@0: 			D_ENCRYPT(r,l,i+2); /*  2 */
sl@0: 			D_ENCRYPT(l,r,i+4); /*  3 */
sl@0: 			D_ENCRYPT(r,l,i+6); /*  4 */
sl@0: 			}
sl@0: #endif
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: #ifdef DES_UNROLL
sl@0: 		D_ENCRYPT(l,r,30); /* 16 */
sl@0: 		D_ENCRYPT(r,l,28); /* 15 */
sl@0: 		D_ENCRYPT(l,r,26); /* 14 */
sl@0: 		D_ENCRYPT(r,l,24); /* 13 */
sl@0: 		D_ENCRYPT(l,r,22); /* 12 */
sl@0: 		D_ENCRYPT(r,l,20); /* 11 */
sl@0: 		D_ENCRYPT(l,r,18); /* 10 */
sl@0: 		D_ENCRYPT(r,l,16); /*  9 */
sl@0: 		D_ENCRYPT(l,r,14); /*  8 */
sl@0: 		D_ENCRYPT(r,l,12); /*  7 */
sl@0: 		D_ENCRYPT(l,r,10); /*  6 */
sl@0: 		D_ENCRYPT(r,l, 8); /*  5 */
sl@0: 		D_ENCRYPT(l,r, 6); /*  4 */
sl@0: 		D_ENCRYPT(r,l, 4); /*  3 */
sl@0: 		D_ENCRYPT(l,r, 2); /*  2 */
sl@0: 		D_ENCRYPT(r,l, 0); /*  1 */
sl@0: #else
sl@0: 		for (i=30; i>0; i-=8)
sl@0: 			{
sl@0: 			D_ENCRYPT(l,r,i-0); /* 16 */
sl@0: 			D_ENCRYPT(r,l,i-2); /* 15 */
sl@0: 			D_ENCRYPT(l,r,i-4); /* 14 */
sl@0: 			D_ENCRYPT(r,l,i-6); /* 13 */
sl@0: 			}
sl@0: #endif
sl@0: 		}
sl@0: 	/* rotate and clear the top bits on machines with 8byte longs */
sl@0: 	data[0]=ROTATE(l,3)&0xffffffffL;
sl@0: 	data[1]=ROTATE(r,3)&0xffffffffL;
sl@0: 	l=r=t=u=0;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void DES_encrypt3(DES_LONG *data, DES_key_schedule *ks1,
sl@0: 		  DES_key_schedule *ks2, DES_key_schedule *ks3)
sl@0: 	{
sl@0: 	register DES_LONG l,r;
sl@0: 
sl@0: 	l=data[0];
sl@0: 	r=data[1];
sl@0: 	IP(l,r);
sl@0: 	data[0]=l;
sl@0: 	data[1]=r;
sl@0: 	DES_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
sl@0: 	DES_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
sl@0: 	DES_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
sl@0: 	l=data[0];
sl@0: 	r=data[1];
sl@0: 	FP(r,l);
sl@0: 	data[0]=l;
sl@0: 	data[1]=r;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void DES_decrypt3(DES_LONG *data, DES_key_schedule *ks1,
sl@0: 		  DES_key_schedule *ks2, DES_key_schedule *ks3)
sl@0: 	{
sl@0: 	register DES_LONG l,r;
sl@0: 
sl@0: 	l=data[0];
sl@0: 	r=data[1];
sl@0: 	IP(l,r);
sl@0: 	data[0]=l;
sl@0: 	data[1]=r;
sl@0: 	DES_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
sl@0: 	DES_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
sl@0: 	DES_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
sl@0: 	l=data[0];
sl@0: 	r=data[1];
sl@0: 	FP(r,l);
sl@0: 	data[0]=l;
sl@0: 	data[1]=r;
sl@0: 	}
sl@0: 
sl@0: #ifndef DES_DEFAULT_OPTIONS
sl@0: 
sl@0: #undef CBC_ENC_C__DONT_UPDATE_IV
sl@0: #include "ncbc_enc.c" /* DES_ncbc_encrypt */
sl@0: 
sl@0: EXPORT_C void DES_ede3_cbc_encrypt(const unsigned char *input, unsigned char *output,
sl@0: 			  long length, DES_key_schedule *ks1,
sl@0: 			  DES_key_schedule *ks2, DES_key_schedule *ks3,
sl@0: 			  DES_cblock *ivec, int enc)
sl@0: 	{
sl@0: 	register DES_LONG tin0,tin1;
sl@0: 	register DES_LONG tout0,tout1,xor0,xor1;
sl@0: 	register const unsigned char *in;
sl@0: 	unsigned char *out;
sl@0: 	register long l=length;
sl@0: 	DES_LONG tin[2];
sl@0: 	unsigned char *iv;
sl@0: 
sl@0: 	in=input;
sl@0: 	out=output;
sl@0: 	iv = &(*ivec)[0];
sl@0: 
sl@0: 	if (enc)
sl@0: 		{
sl@0: 		c2l(iv,tout0);
sl@0: 		c2l(iv,tout1);
sl@0: 		for (l-=8; l>=0; l-=8)
sl@0: 			{
sl@0: 			c2l(in,tin0);
sl@0: 			c2l(in,tin1);
sl@0: 			tin0^=tout0;
sl@0: 			tin1^=tout1;
sl@0: 
sl@0: 			tin[0]=tin0;
sl@0: 			tin[1]=tin1;
sl@0: 			DES_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
sl@0: 			tout0=tin[0];
sl@0: 			tout1=tin[1];
sl@0: 
sl@0: 			l2c(tout0,out);
sl@0: 			l2c(tout1,out);
sl@0: 			}
sl@0: 		if (l != -8)
sl@0: 			{
sl@0: 			c2ln(in,tin0,tin1,l+8);
sl@0: 			tin0^=tout0;
sl@0: 			tin1^=tout1;
sl@0: 
sl@0: 			tin[0]=tin0;
sl@0: 			tin[1]=tin1;
sl@0: 			DES_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
sl@0: 			tout0=tin[0];
sl@0: 			tout1=tin[1];
sl@0: 
sl@0: 			l2c(tout0,out);
sl@0: 			l2c(tout1,out);
sl@0: 			}
sl@0: 		iv = &(*ivec)[0];
sl@0: 		l2c(tout0,iv);
sl@0: 		l2c(tout1,iv);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		register DES_LONG t0,t1;
sl@0: 
sl@0: 		c2l(iv,xor0);
sl@0: 		c2l(iv,xor1);
sl@0: 		for (l-=8; l>=0; l-=8)
sl@0: 			{
sl@0: 			c2l(in,tin0);
sl@0: 			c2l(in,tin1);
sl@0: 
sl@0: 			t0=tin0;
sl@0: 			t1=tin1;
sl@0: 
sl@0: 			tin[0]=tin0;
sl@0: 			tin[1]=tin1;
sl@0: 			DES_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
sl@0: 			tout0=tin[0];
sl@0: 			tout1=tin[1];
sl@0: 
sl@0: 			tout0^=xor0;
sl@0: 			tout1^=xor1;
sl@0: 			l2c(tout0,out);
sl@0: 			l2c(tout1,out);
sl@0: 			xor0=t0;
sl@0: 			xor1=t1;
sl@0: 			}
sl@0: 		if (l != -8)
sl@0: 			{
sl@0: 			c2l(in,tin0);
sl@0: 			c2l(in,tin1);
sl@0: 			
sl@0: 			t0=tin0;
sl@0: 			t1=tin1;
sl@0: 
sl@0: 			tin[0]=tin0;
sl@0: 			tin[1]=tin1;
sl@0: 			DES_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
sl@0: 			tout0=tin[0];
sl@0: 			tout1=tin[1];
sl@0: 		
sl@0: 			tout0^=xor0;
sl@0: 			tout1^=xor1;
sl@0: 			l2cn(tout0,tout1,out,l+8);
sl@0: 			xor0=t0;
sl@0: 			xor1=t1;
sl@0: 			}
sl@0: 
sl@0: 		iv = &(*ivec)[0];
sl@0: 		l2c(xor0,iv);
sl@0: 		l2c(xor1,iv);
sl@0: 		}
sl@0: 	tin0=tin1=tout0=tout1=xor0=xor1=0;
sl@0: 	tin[0]=tin[1]=0;
sl@0: 	}
sl@0: 
sl@0: #endif /* DES_DEFAULT_OPTIONS */