[thirdparty/openssl.git] / crypto / des / des_enc.c

/* crypto/des/des_enc.c */
/* 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.]
 */

#include "des_locl.h"

void des_encrypt(data, ks, enc)
DES_LONG *data;
des_key_schedule ks;
int enc;
	{
	register DES_LONG l,r,t,u;
#ifdef DES_PTR
	register unsigned char *des_SP=(unsigned char *)des_SPtrans;
#endif
#ifndef DES_UNROLL
	register int i;
#endif
	register DES_LONG *s;

	r=data[0];
	l=data[1];

	IP(r,l);
	/* Things have been modified so that the initial rotate is
	 * done outside the loop.  This required the
	 * des_SPtrans values in sp.h to be rotated 1 bit to the right.
	 * One perl script later and things have a 5% speed up on a sparc2.
	 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
	 * for pointing this out. */
	/* clear the top bits on machines with 8byte longs */
	/* shift left by 2 */
	r=ROTATE(r,29)&0xffffffffL;
	l=ROTATE(l,29)&0xffffffffL;

	s=(DES_LONG *)ks;
	/* I don't know if it is worth the effort of loop unrolling the
	 * inner loop */
	if (enc)
		{
#ifdef DES_UNROLL
		D_ENCRYPT(l,r, 0); /*  1 */
		D_ENCRYPT(r,l, 2); /*  2 */
		D_ENCRYPT(l,r, 4); /*  3 */
		D_ENCRYPT(r,l, 6); /*  4 */
		D_ENCRYPT(l,r, 8); /*  5 */
		D_ENCRYPT(r,l,10); /*  6 */
		D_ENCRYPT(l,r,12); /*  7 */
		D_ENCRYPT(r,l,14); /*  8 */
		D_ENCRYPT(l,r,16); /*  9 */
		D_ENCRYPT(r,l,18); /*  10 */
		D_ENCRYPT(l,r,20); /*  11 */
		D_ENCRYPT(r,l,22); /*  12 */
		D_ENCRYPT(l,r,24); /*  13 */
		D_ENCRYPT(r,l,26); /*  14 */
		D_ENCRYPT(l,r,28); /*  15 */
		D_ENCRYPT(r,l,30); /*  16 */
#else
		for (i=0; i<32; i+=8)
			{
			D_ENCRYPT(l,r,i+0); /*  1 */
			D_ENCRYPT(r,l,i+2); /*  2 */
			D_ENCRYPT(l,r,i+4); /*  3 */
			D_ENCRYPT(r,l,i+6); /*  4 */
			}
#endif
		}
	else
		{
#ifdef DES_UNROLL
		D_ENCRYPT(l,r,30); /* 16 */
		D_ENCRYPT(r,l,28); /* 15 */
		D_ENCRYPT(l,r,26); /* 14 */
		D_ENCRYPT(r,l,24); /* 13 */
		D_ENCRYPT(l,r,22); /* 12 */
		D_ENCRYPT(r,l,20); /* 11 */
		D_ENCRYPT(l,r,18); /* 10 */
		D_ENCRYPT(r,l,16); /*  9 */
		D_ENCRYPT(l,r,14); /*  8 */
		D_ENCRYPT(r,l,12); /*  7 */
		D_ENCRYPT(l,r,10); /*  6 */
		D_ENCRYPT(r,l, 8); /*  5 */
		D_ENCRYPT(l,r, 6); /*  4 */
		D_ENCRYPT(r,l, 4); /*  3 */
		D_ENCRYPT(l,r, 2); /*  2 */
		D_ENCRYPT(r,l, 0); /*  1 */
#else
		for (i=30; i>0; i-=8)
			{
			D_ENCRYPT(l,r,i-0); /* 16 */
			D_ENCRYPT(r,l,i-2); /* 15 */
			D_ENCRYPT(l,r,i-4); /* 14 */
			D_ENCRYPT(r,l,i-6); /* 13 */
			}
#endif
		}

	/* rotate and clear the top bits on machines with 8byte longs */
	l=ROTATE(l,3)&0xffffffffL;
	r=ROTATE(r,3)&0xffffffffL;

	FP(r,l);
	data[0]=l;
	data[1]=r;
	l=r=t=u=0;
	}

void des_encrypt2(data, ks, enc)
DES_LONG *data;
des_key_schedule ks;
int enc;
	{
	register DES_LONG l,r,t,u;
#ifdef DES_PTR
	register unsigned char *des_SP=(unsigned char *)des_SPtrans;
#endif
#ifndef DES_UNROLL
	register int i;
#endif
	register DES_LONG *s;

	r=data[0];
	l=data[1];

	/* Things have been modified so that the initial rotate is
	 * done outside the loop.  This required the
	 * des_SPtrans values in sp.h to be rotated 1 bit to the right.
	 * One perl script later and things have a 5% speed up on a sparc2.
	 * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
	 * for pointing this out. */
	/* clear the top bits on machines with 8byte longs */
	r=ROTATE(r,29)&0xffffffffL;
	l=ROTATE(l,29)&0xffffffffL;

	s=(DES_LONG *)ks;
	/* I don't know if it is worth the effort of loop unrolling the
	 * inner loop */
	if (enc)
		{
#ifdef DES_UNROLL
		D_ENCRYPT(l,r, 0); /*  1 */
		D_ENCRYPT(r,l, 2); /*  2 */
		D_ENCRYPT(l,r, 4); /*  3 */
		D_ENCRYPT(r,l, 6); /*  4 */
		D_ENCRYPT(l,r, 8); /*  5 */
		D_ENCRYPT(r,l,10); /*  6 */
		D_ENCRYPT(l,r,12); /*  7 */
		D_ENCRYPT(r,l,14); /*  8 */
		D_ENCRYPT(l,r,16); /*  9 */
		D_ENCRYPT(r,l,18); /*  10 */
		D_ENCRYPT(l,r,20); /*  11 */
		D_ENCRYPT(r,l,22); /*  12 */
		D_ENCRYPT(l,r,24); /*  13 */
		D_ENCRYPT(r,l,26); /*  14 */
		D_ENCRYPT(l,r,28); /*  15 */
		D_ENCRYPT(r,l,30); /*  16 */
#else
		for (i=0; i<32; i+=8)
			{
			D_ENCRYPT(l,r,i+0); /*  1 */
			D_ENCRYPT(r,l,i+2); /*  2 */
			D_ENCRYPT(l,r,i+4); /*  3 */
			D_ENCRYPT(r,l,i+6); /*  4 */
			}
#endif
		}
	else
		{
#ifdef DES_UNROLL
		D_ENCRYPT(l,r,30); /* 16 */
		D_ENCRYPT(r,l,28); /* 15 */
		D_ENCRYPT(l,r,26); /* 14 */
		D_ENCRYPT(r,l,24); /* 13 */
		D_ENCRYPT(l,r,22); /* 12 */
		D_ENCRYPT(r,l,20); /* 11 */
		D_ENCRYPT(l,r,18); /* 10 */
		D_ENCRYPT(r,l,16); /*  9 */
		D_ENCRYPT(l,r,14); /*  8 */
		D_ENCRYPT(r,l,12); /*  7 */
		D_ENCRYPT(l,r,10); /*  6 */
		D_ENCRYPT(r,l, 8); /*  5 */
		D_ENCRYPT(l,r, 6); /*  4 */
		D_ENCRYPT(r,l, 4); /*  3 */
		D_ENCRYPT(l,r, 2); /*  2 */
		D_ENCRYPT(r,l, 0); /*  1 */
#else
		for (i=30; i>0; i-=8)
			{
			D_ENCRYPT(l,r,i-0); /* 16 */
			D_ENCRYPT(r,l,i-2); /* 15 */
			D_ENCRYPT(l,r,i-4); /* 14 */
			D_ENCRYPT(r,l,i-6); /* 13 */
			}
#endif
		}
	/* rotate and clear the top bits on machines with 8byte longs */
	data[0]=ROTATE(l,3)&0xffffffffL;
	data[1]=ROTATE(r,3)&0xffffffffL;
	l=r=t=u=0;
	}

void des_encrypt3(data,ks1,ks2,ks3)
DES_LONG *data;
des_key_schedule ks1;
des_key_schedule ks2;
des_key_schedule ks3;
	{
	register DES_LONG l,r;

	l=data[0];
	r=data[1];
	IP(l,r);
	data[0]=l;
	data[1]=r;
	des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
	des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
	des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
	l=data[0];
	r=data[1];
	FP(r,l);
	data[0]=l;
	data[1]=r;
	}

void des_decrypt3(data,ks1,ks2,ks3)
DES_LONG *data;
des_key_schedule ks1;
des_key_schedule ks2;
des_key_schedule ks3;
	{
	register DES_LONG l,r;

	l=data[0];
	r=data[1];
	IP(l,r);
	data[0]=l;
	data[1]=r;
	des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
	des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
	des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
	l=data[0];
	r=data[1];
	FP(r,l);
	data[0]=l;
	data[1]=r;
	}

#ifndef DES_DEFAULT_OPTIONS

void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
des_cblock (*input);
des_cblock (*output);
long length;
des_key_schedule schedule;
des_cblock (*ivec);
int enc;
	{
	register DES_LONG tin0,tin1;
	register DES_LONG tout0,tout1,xor0,xor1;
	register unsigned char *in,*out;
	register long l=length;
	DES_LONG tin[2];
	unsigned char *iv;

	in=(unsigned char *)input;
	out=(unsigned char *)output;
	iv=(unsigned char *)ivec;

	if (enc)
		{
		c2l(iv,tout0);
		c2l(iv,tout1);
		for (l-=8; l>=0; l-=8)
			{
			c2l(in,tin0);
			c2l(in,tin1);
			tin0^=tout0; tin[0]=tin0;
			tin1^=tout1; tin[1]=tin1;
			des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
			tout0=tin[0]; l2c(tout0,out);
			tout1=tin[1]; l2c(tout1,out);
			}
		if (l != -8)
			{
			c2ln(in,tin0,tin1,l+8);
			tin0^=tout0; tin[0]=tin0;
			tin1^=tout1; tin[1]=tin1;
			des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
			tout0=tin[0]; l2c(tout0,out);
			tout1=tin[1]; l2c(tout1,out);
			}
		iv=(unsigned char *)ivec;
		l2c(tout0,iv);
		l2c(tout1,iv);
		}
	else
		{
		c2l(iv,xor0);
		c2l(iv,xor1);
		for (l-=8; l>=0; l-=8)
			{
			c2l(in,tin0); tin[0]=tin0;
			c2l(in,tin1); tin[1]=tin1;
			des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
			tout0=tin[0]^xor0;
			tout1=tin[1]^xor1;
			l2c(tout0,out);
			l2c(tout1,out);
			xor0=tin0;
			xor1=tin1;
			}
		if (l != -8)
			{
			c2l(in,tin0); tin[0]=tin0;
			c2l(in,tin1); tin[1]=tin1;
			des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
			tout0=tin[0]^xor0;
			tout1=tin[1]^xor1;
			l2cn(tout0,tout1,out,l+8);
			xor0=tin0;
			xor1=tin1;
			}

		iv=(unsigned char *)ivec;
		l2c(xor0,iv);
		l2c(xor1,iv);
		}
	tin0=tin1=tout0=tout1=xor0=xor1=0;
	tin[0]=tin[1]=0;
	}

void des_ede3_cbc_encrypt(input, output, length, ks1, ks2, ks3, ivec, enc)
des_cblock (*input);
des_cblock (*output);
long length;
des_key_schedule ks1;
des_key_schedule ks2;
des_key_schedule ks3;
des_cblock (*ivec);
int enc;
	{
	register DES_LONG tin0,tin1;
	register DES_LONG tout0,tout1,xor0,xor1;
	register unsigned char *in,*out;
	register long l=length;
	DES_LONG tin[2];
	unsigned char *iv;

	in=(unsigned char *)input;
	out=(unsigned char *)output;
	iv=(unsigned char *)ivec;

	if (enc)
		{
		c2l(iv,tout0);
		c2l(iv,tout1);
		for (l-=8; l>=0; l-=8)
			{
			c2l(in,tin0);
			c2l(in,tin1);
			tin0^=tout0;
			tin1^=tout1;

			tin[0]=tin0;
			tin[1]=tin1;
			des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
			tout0=tin[0];
			tout1=tin[1];

			l2c(tout0,out);
			l2c(tout1,out);
			}
		if (l != -8)
			{
			c2ln(in,tin0,tin1,l+8);
			tin0^=tout0;
			tin1^=tout1;

			tin[0]=tin0;
			tin[1]=tin1;
			des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
			tout0=tin[0];
			tout1=tin[1];

			l2c(tout0,out);
			l2c(tout1,out);
			}
		iv=(unsigned char *)ivec;
		l2c(tout0,iv);
		l2c(tout1,iv);
		}
	else
		{
		register DES_LONG t0,t1;

		c2l(iv,xor0);
		c2l(iv,xor1);
		for (l-=8; l>=0; l-=8)
			{
			c2l(in,tin0);
			c2l(in,tin1);

			t0=tin0;
			t1=tin1;

			tin[0]=tin0;
			tin[1]=tin1;
			des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
			tout0=tin[0];
			tout1=tin[1];

			tout0^=xor0;
			tout1^=xor1;
			l2c(tout0,out);
			l2c(tout1,out);
			xor0=t0;
			xor1=t1;
			}
		if (l != -8)
			{
			c2l(in,tin0);
			c2l(in,tin1);
			
			t0=tin0;
			t1=tin1;

			tin[0]=tin0;
			tin[1]=tin1;
			des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
			tout0=tin[0];
			tout1=tin[1];
		
			tout0^=xor0;
			tout1^=xor1;
			l2cn(tout0,tout1,out,l+8);
			xor0=t0;
			xor1=t1;
			}

		iv=(unsigned char *)ivec;
		l2c(xor0,iv);
		l2c(xor1,iv);
		}
	tin0=tin1=tout0=tout1=xor0=xor1=0;
	tin[0]=tin[1]=0;
	}

#endif /* DES_DEFAULT_OPTIONS */
Commit	Line	Data
d02b48c6	1	/* crypto/des/des_enc.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include "des_locl.h"
	60
	61	void des_encrypt(data, ks, enc)
	62	DES_LONG *data;
	63	des_key_schedule ks;
	64	int enc;
	65	{
	66	register DES_LONG l,r,t,u;
67	#ifdef DES_PTR
68	register unsigned char des_SP=(unsigned char )des_SPtrans;
69	#endif
70	#ifndef DES_UNROLL
71	register int i;
72	#endif
73	register DES_LONG *s;
74
75	r=data[0];
76	l=data[1];
77
78	IP(r,l);
79	/* Things have been modified so that the initial rotate is
80	* done outside the loop. This required the
81	* des_SPtrans values in sp.h to be rotated 1 bit to the right.
82	* One perl script later and things have a 5% speed up on a sparc2.
83	* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
84	* for pointing this out. */
85	/* clear the top bits on machines with 8byte longs */
86	/* shift left by 2 */
87	r=ROTATE(r,29)&0xffffffffL;
88	l=ROTATE(l,29)&0xffffffffL;
89
90	s=(DES_LONG *)ks;
91	/* I don't know if it is worth the effort of loop unrolling the
92	* inner loop */
93	if (enc)
94	{
95	#ifdef DES_UNROLL
96	D_ENCRYPT(l,r, 0); /* 1 */
97	D_ENCRYPT(r,l, 2); /* 2 */
98	D_ENCRYPT(l,r, 4); /* 3 */
99	D_ENCRYPT(r,l, 6); /* 4 */
100	D_ENCRYPT(l,r, 8); /* 5 */
101	D_ENCRYPT(r,l,10); /* 6 */
102	D_ENCRYPT(l,r,12); /* 7 */
103	D_ENCRYPT(r,l,14); /* 8 */
104	D_ENCRYPT(l,r,16); /* 9 */
105	D_ENCRYPT(r,l,18); /* 10 */
106	D_ENCRYPT(l,r,20); /* 11 */
107	D_ENCRYPT(r,l,22); /* 12 */
108	D_ENCRYPT(l,r,24); /* 13 */
109	D_ENCRYPT(r,l,26); /* 14 */
110	D_ENCRYPT(l,r,28); /* 15 */
111	D_ENCRYPT(r,l,30); /* 16 */
112	#else
113	for (i=0; i<32; i+=8)
114	{
115	D_ENCRYPT(l,r,i+0); /* 1 */
116	D_ENCRYPT(r,l,i+2); /* 2 */
117	D_ENCRYPT(l,r,i+4); /* 3 */
118	D_ENCRYPT(r,l,i+6); /* 4 */
119	}
120	#endif
121	}
122	else
123	{
124	#ifdef DES_UNROLL
125	D_ENCRYPT(l,r,30); /* 16 */
126	D_ENCRYPT(r,l,28); /* 15 */
127	D_ENCRYPT(l,r,26); /* 14 */
128	D_ENCRYPT(r,l,24); /* 13 */
129	D_ENCRYPT(l,r,22); /* 12 */
130	D_ENCRYPT(r,l,20); /* 11 */
131	D_ENCRYPT(l,r,18); /* 10 */
132	D_ENCRYPT(r,l,16); /* 9 */
133	D_ENCRYPT(l,r,14); /* 8 */
134	D_ENCRYPT(r,l,12); /* 7 */
135	D_ENCRYPT(l,r,10); /* 6 */
136	D_ENCRYPT(r,l, 8); /* 5 */
137	D_ENCRYPT(l,r, 6); /* 4 */
138	D_ENCRYPT(r,l, 4); /* 3 */
139	D_ENCRYPT(l,r, 2); /* 2 */
140	D_ENCRYPT(r,l, 0); /* 1 */
141	#else
142	for (i=30; i>0; i-=8)
143	{
144	D_ENCRYPT(l,r,i-0); /* 16 */
145	D_ENCRYPT(r,l,i-2); /* 15 */
146	D_ENCRYPT(l,r,i-4); /* 14 */
147	D_ENCRYPT(r,l,i-6); /* 13 */
148	}
149	#endif
150	}
151
152	/* rotate and clear the top bits on machines with 8byte longs */
153	l=ROTATE(l,3)&0xffffffffL;
154	r=ROTATE(r,3)&0xffffffffL;
155
156	FP(r,l);
157	data[0]=l;
158	data[1]=r;
159	l=r=t=u=0;
160	}
161
162	void des_encrypt2(data, ks, enc)
163	DES_LONG *data;
164	des_key_schedule ks;
165	int enc;
166	{
167	register DES_LONG l,r,t,u;
168	#ifdef DES_PTR
169	register unsigned char des_SP=(unsigned char )des_SPtrans;
170	#endif
171	#ifndef DES_UNROLL
172	register int i;
173	#endif
174	register DES_LONG *s;
175
176	r=data[0];
177	l=data[1];
178
179	/* Things have been modified so that the initial rotate is
180	* done outside the loop. This required the
181	* des_SPtrans values in sp.h to be rotated 1 bit to the right.
182	* One perl script later and things have a 5% speed up on a sparc2.
183	* Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
184	* for pointing this out. */
185	/* clear the top bits on machines with 8byte longs */
58964a49 RE	186	r=ROTATE(r,29)&0xffffffffL;
58964a49 RE	187	l=ROTATE(l,29)&0xffffffffL;
d02b48c6 RE	188
	189	s=(DES_LONG *)ks;
	190	/* I don't know if it is worth the effort of loop unrolling the
	191	* inner loop */
	192	if (enc)
	193	{
	194	#ifdef DES_UNROLL
	195	D_ENCRYPT(l,r, 0); /* 1 */
	196	D_ENCRYPT(r,l, 2); /* 2 */
	197	D_ENCRYPT(l,r, 4); /* 3 */
	198	D_ENCRYPT(r,l, 6); /* 4 */
	199	D_ENCRYPT(l,r, 8); /* 5 */
	200	D_ENCRYPT(r,l,10); /* 6 */
	201	D_ENCRYPT(l,r,12); /* 7 */
	202	D_ENCRYPT(r,l,14); /* 8 */
	203	D_ENCRYPT(l,r,16); /* 9 */
	204	D_ENCRYPT(r,l,18); /* 10 */
	205	D_ENCRYPT(l,r,20); /* 11 */
	206	D_ENCRYPT(r,l,22); /* 12 */
	207	D_ENCRYPT(l,r,24); /* 13 */
	208	D_ENCRYPT(r,l,26); /* 14 */
	209	D_ENCRYPT(l,r,28); /* 15 */
	210	D_ENCRYPT(r,l,30); /* 16 */
	211	#else
	212	for (i=0; i<32; i+=8)
	213	{
	214	D_ENCRYPT(l,r,i+0); /* 1 */
	215	D_ENCRYPT(r,l,i+2); /* 2 */
	216	D_ENCRYPT(l,r,i+4); /* 3 */
	217	D_ENCRYPT(r,l,i+6); /* 4 */
	218	}
	219	#endif
	220	}
	221	else
	222	{
	223	#ifdef DES_UNROLL
	224	D_ENCRYPT(l,r,30); /* 16 */
	225	D_ENCRYPT(r,l,28); /* 15 */
	226	D_ENCRYPT(l,r,26); /* 14 */
	227	D_ENCRYPT(r,l,24); /* 13 */
	228	D_ENCRYPT(l,r,22); /* 12 */
	229	D_ENCRYPT(r,l,20); /* 11 */
	230	D_ENCRYPT(l,r,18); /* 10 */
	231	D_ENCRYPT(r,l,16); /* 9 */
	232	D_ENCRYPT(l,r,14); /* 8 */
	233	D_ENCRYPT(r,l,12); /* 7 */
	234	D_ENCRYPT(l,r,10); /* 6 */
	235	D_ENCRYPT(r,l, 8); /* 5 */
	236	D_ENCRYPT(l,r, 6); /* 4 */
	237	D_ENCRYPT(r,l, 4); /* 3 */
	238	D_ENCRYPT(l,r, 2); /* 2 */
	239	D_ENCRYPT(r,l, 0); /* 1 */
	240	#else
	241	for (i=30; i>0; i-=8)
	242	{
	243	D_ENCRYPT(l,r,i-0); /* 16 */
	244	D_ENCRYPT(r,l,i-2); /* 15 */
	245	D_ENCRYPT(l,r,i-4); /* 14 */
	246	D_ENCRYPT(r,l,i-6); /* 13 */
	247	}
	248	#endif
	249	}
	250	/* rotate and clear the top bits on machines with 8byte longs */
58964a49 RE	251	data[0]=ROTATE(l,3)&0xffffffffL;
58964a49 RE	252	data[1]=ROTATE(r,3)&0xffffffffL;
d02b48c6 RE	253	l=r=t=u=0;
	254	}
	255
	256	void des_encrypt3(data,ks1,ks2,ks3)
	257	DES_LONG *data;
	258	des_key_schedule ks1;
	259	des_key_schedule ks2;
	260	des_key_schedule ks3;
	261	{
	262	register DES_LONG l,r;
	263
	264	l=data[0];
	265	r=data[1];
	266	IP(l,r);
	267	data[0]=l;
	268	data[1]=r;
	269	des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
	270	des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
	271	des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
	272	l=data[0];
	273	r=data[1];
	274	FP(r,l);
	275	data[0]=l;
	276	data[1]=r;
	277	}
	278
	279	void des_decrypt3(data,ks1,ks2,ks3)
	280	DES_LONG *data;
	281	des_key_schedule ks1;
	282	des_key_schedule ks2;
	283	des_key_schedule ks3;
	284	{
	285	register DES_LONG l,r;
	286
	287	l=data[0];
	288	r=data[1];
	289	IP(l,r);
	290	data[0]=l;
	291	data[1]=r;
	292	des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
	293	des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
	294	des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
	295	l=data[0];
	296	r=data[1];
	297	FP(r,l);
	298	data[0]=l;
	299	data[1]=r;
	300	}
	301
58964a49 RE	302	#ifndef DES_DEFAULT_OPTIONS
	303
	304	void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
	305	des_cblock (*input);
	306	des_cblock (*output);
	307	long length;
	308	des_key_schedule schedule;
	309	des_cblock (*ivec);
	310	int enc;
	311	{
	312	register DES_LONG tin0,tin1;
	313	register DES_LONG tout0,tout1,xor0,xor1;
	314	register unsigned char in,out;
	315	register long l=length;
	316	DES_LONG tin[2];
	317	unsigned char *iv;
	318
	319	in=(unsigned char *)input;
	320	out=(unsigned char *)output;
	321	iv=(unsigned char *)ivec;
	322
	323	if (enc)
	324	{
	325	c2l(iv,tout0);
	326	c2l(iv,tout1);
	327	for (l-=8; l>=0; l-=8)
	328	{
	329	c2l(in,tin0);
	330	c2l(in,tin1);
	331	tin0^=tout0; tin[0]=tin0;
	332	tin1^=tout1; tin[1]=tin1;
	333	des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
	334	tout0=tin[0]; l2c(tout0,out);
	335	tout1=tin[1]; l2c(tout1,out);
	336	}
	337	if (l != -8)
	338	{
	339	c2ln(in,tin0,tin1,l+8);
	340	tin0^=tout0; tin[0]=tin0;
	341	tin1^=tout1; tin[1]=tin1;
	342	des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
	343	tout0=tin[0]; l2c(tout0,out);
	344	tout1=tin[1]; l2c(tout1,out);
	345	}
	346	iv=(unsigned char *)ivec;
	347	l2c(tout0,iv);
	348	l2c(tout1,iv);
	349	}
	350	else
	351	{
	352	c2l(iv,xor0);
	353	c2l(iv,xor1);
	354	for (l-=8; l>=0; l-=8)
	355	{
	356	c2l(in,tin0); tin[0]=tin0;
	357	c2l(in,tin1); tin[1]=tin1;
	358	des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
	359	tout0=tin[0]^xor0;
	360	tout1=tin[1]^xor1;
	361	l2c(tout0,out);
	362	l2c(tout1,out);
	363	xor0=tin0;
	364	xor1=tin1;
	365	}
366	if (l != -8)
367	{
368	c2l(in,tin0); tin[0]=tin0;
369	c2l(in,tin1); tin[1]=tin1;
370	des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
371	tout0=tin[0]^xor0;
372	tout1=tin[1]^xor1;
373	l2cn(tout0,tout1,out,l+8);
374	xor0=tin0;
375	xor1=tin1;
376	}
377
378	iv=(unsigned char *)ivec;
379	l2c(xor0,iv);
380	l2c(xor1,iv);
381	}
382	tin0=tin1=tout0=tout1=xor0=xor1=0;
383	tin[0]=tin[1]=0;
384	}
385
386	void des_ede3_cbc_encrypt(input, output, length, ks1, ks2, ks3, ivec, enc)
387	des_cblock (*input);
388	des_cblock (*output);
389	long length;
390	des_key_schedule ks1;
391	des_key_schedule ks2;
392	des_key_schedule ks3;
393	des_cblock (*ivec);
394	int enc;
395	{
396	register DES_LONG tin0,tin1;
397	register DES_LONG tout0,tout1,xor0,xor1;
398	register unsigned char in,out;
399	register long l=length;
400	DES_LONG tin[2];
401	unsigned char *iv;
402
403	in=(unsigned char *)input;
404	out=(unsigned char *)output;
405	iv=(unsigned char *)ivec;
406
407	if (enc)
408	{
409	c2l(iv,tout0);
410	c2l(iv,tout1);
411	for (l-=8; l>=0; l-=8)
412	{
413	c2l(in,tin0);
414	c2l(in,tin1);
415	tin0^=tout0;
416	tin1^=tout1;
417
418	tin[0]=tin0;
419	tin[1]=tin1;
420	des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
421	tout0=tin[0];
422	tout1=tin[1];
423
424	l2c(tout0,out);
425	l2c(tout1,out);
426	}
427	if (l != -8)
428	{
429	c2ln(in,tin0,tin1,l+8);
430	tin0^=tout0;
431	tin1^=tout1;
432
433	tin[0]=tin0;
434	tin[1]=tin1;
435	des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
436	tout0=tin[0];
437	tout1=tin[1];
438
439	l2c(tout0,out);
440	l2c(tout1,out);
441	}
442	iv=(unsigned char *)ivec;
443	l2c(tout0,iv);
444	l2c(tout1,iv);
445	}
446	else
447	{
448	register DES_LONG t0,t1;
449
450	c2l(iv,xor0);
451	c2l(iv,xor1);
452	for (l-=8; l>=0; l-=8)
453	{
454	c2l(in,tin0);
455	c2l(in,tin1);
456
457	t0=tin0;
458	t1=tin1;
459
460	tin[0]=tin0;
461	tin[1]=tin1;
462	des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
463	tout0=tin[0];
464	tout1=tin[1];
465
466	tout0^=xor0;
467	tout1^=xor1;
468	l2c(tout0,out);
469	l2c(tout1,out);
470	xor0=t0;
471	xor1=t1;
472	}
473	if (l != -8)
474	{
475	c2l(in,tin0);
476	c2l(in,tin1);
477
478	t0=tin0;
479	t1=tin1;
480
481	tin[0]=tin0;
482	tin[1]=tin1;
483	des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
484	tout0=tin[0];
485	tout1=tin[1];
486
487	tout0^=xor0;
488	tout1^=xor1;
489	l2cn(tout0,tout1,out,l+8);
490	xor0=t0;
491	xor1=t1;
492	}
493
494	iv=(unsigned char *)ivec;
495	l2c(xor0,iv);
496	l2c(xor1,iv);
497	}
498	tin0=tin1=tout0=tout1=xor0=xor1=0;
499	tin[0]=tin[1]=0;
500	}
501
502	#endif /* DES_DEFAULT_OPTIONS */