[apple/security.git] / libsecurity_apple_csp / open_ssl / misc / rc5_enc.c

/*
 * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
 * 
 * The contents of this file constitute Original Code as defined in and are
 * subject to the Apple Public Source License Version 1.2 (the 'License').
 * You may not use this file except in compliance with the License. Please obtain
 * a copy of the License at http://www.apple.com/publicsource and read it before
 * using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
 * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
 * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
 * specific language governing rights and limitations under the License.
 */


/* crypto/rc5/rc5_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 <stdio.h>
#include <openssl/rc5.h>
#include "rc5_locl.h"

#ifndef	_OPENSSL_APPLE_CDSA_
void RC5_32_cbc_encrypt(unsigned char *in, unsigned char *out, long length,
	     RC5_32_KEY *ks, unsigned char *iv, int encrypt)
	{
	register unsigned long tin0,tin1;
	register unsigned long tout0,tout1,xor0,xor1;
	register long l=length;
	unsigned long tin[2];

	if (encrypt)
		{
		c2l(iv,tout0);
		c2l(iv,tout1);
		iv-=8;
		for (l-=8; l>=0; l-=8)
			{
			c2l(in,tin0);
			c2l(in,tin1);
			tin0^=tout0;
			tin1^=tout1;
			tin[0]=tin0;
			tin[1]=tin1;
			RC5_32_encrypt(tin,ks);
			tout0=tin[0]; l2c(tout0,out);
			tout1=tin[1]; l2c(tout1,out);
			}
		if (l != -8)
			{
			c2ln(in,tin0,tin1,l+8);
			tin0^=tout0;
			tin1^=tout1;
			tin[0]=tin0;
			tin[1]=tin1;
			RC5_32_encrypt(tin,ks);
			tout0=tin[0]; l2c(tout0,out);
			tout1=tin[1]; l2c(tout1,out);
			}
		l2c(tout0,iv);
		l2c(tout1,iv);
		}
	else
		{
		c2l(iv,xor0);
		c2l(iv,xor1);
		iv-=8;
		for (l-=8; l>=0; l-=8)
			{
			c2l(in,tin0); tin[0]=tin0;
			c2l(in,tin1); tin[1]=tin1;
			RC5_32_decrypt(tin,ks);
			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;
			RC5_32_decrypt(tin,ks);
			tout0=tin[0]^xor0;
			tout1=tin[1]^xor1;
			l2cn(tout0,tout1,out,l+8);
			xor0=tin0;
			xor1=tin1;
			}
		l2c(xor0,iv);
		l2c(xor1,iv);
		}
	tin0=tin1=tout0=tout1=xor0=xor1=0;
	tin[0]=tin[1]=0;
	}

#endif

#ifdef	_OPENSSL_APPLE_CDSA_
void RC5_32_encrypt(RC5_32_INT *d, RC5_32_KEY *key)
#else
void RC5_32_encrypt(unsigned long *d, RC5_32_KEY *key)
#endif	/* _OPENSSL_APPLE_CDSA_ */
	{
	RC5_32_INT a,b,*s;

	s=key->data;

	a=d[0]+s[0];
	b=d[1]+s[1];
	E_RC5_32(a,b,s, 2);
	E_RC5_32(a,b,s, 4);
	E_RC5_32(a,b,s, 6);
	E_RC5_32(a,b,s, 8);
	E_RC5_32(a,b,s,10);
	E_RC5_32(a,b,s,12);
	E_RC5_32(a,b,s,14);
	E_RC5_32(a,b,s,16);
	if (key->rounds == 12)
		{
		E_RC5_32(a,b,s,18);
		E_RC5_32(a,b,s,20);
		E_RC5_32(a,b,s,22);
		E_RC5_32(a,b,s,24);
		}
	else if (key->rounds == 16)
		{
		/* Do a full expansion to avoid a jump */
		E_RC5_32(a,b,s,18);
		E_RC5_32(a,b,s,20);
		E_RC5_32(a,b,s,22);
		E_RC5_32(a,b,s,24);
		E_RC5_32(a,b,s,26);
		E_RC5_32(a,b,s,28);
		E_RC5_32(a,b,s,30);
		E_RC5_32(a,b,s,32);
		}
	d[0]=a;
	d[1]=b;
	}

#ifdef	_OPENSSL_APPLE_CDSA_
void RC5_32_decrypt(RC5_32_INT *d, RC5_32_KEY *key)
#else
void RC5_32_decrypt(unsigned long *d, RC5_32_KEY *key)
#endif	/* _OPENSSL_APPLE_CDSA_*/
	{
	RC5_32_INT a,b,*s;

	s=key->data;

	a=d[0];
	b=d[1];
	if (key->rounds == 16) 
		{
		D_RC5_32(a,b,s,32);
		D_RC5_32(a,b,s,30);
		D_RC5_32(a,b,s,28);
		D_RC5_32(a,b,s,26);
		/* Do a full expansion to avoid a jump */
		D_RC5_32(a,b,s,24);
		D_RC5_32(a,b,s,22);
		D_RC5_32(a,b,s,20);
		D_RC5_32(a,b,s,18);
		}
	else if (key->rounds == 12)
		{
		D_RC5_32(a,b,s,24);
		D_RC5_32(a,b,s,22);
		D_RC5_32(a,b,s,20);
		D_RC5_32(a,b,s,18);
		}
	D_RC5_32(a,b,s,16);
	D_RC5_32(a,b,s,14);
	D_RC5_32(a,b,s,12);
	D_RC5_32(a,b,s,10);
	D_RC5_32(a,b,s, 8);
	D_RC5_32(a,b,s, 6);
	D_RC5_32(a,b,s, 4);
	D_RC5_32(a,b,s, 2);
	d[0]=a-s[0];
	d[1]=b-s[1];
	}
Commit	Line	Data
b1ab9ed8 A	1	/*
	2	* Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
	3	*
	4	* The contents of this file constitute Original Code as defined in and are
	5	* subject to the Apple Public Source License Version 1.2 (the 'License').
	6	* You may not use this file except in compliance with the License. Please obtain
	7	* a copy of the License at http://www.apple.com/publicsource and read it before
	8	* using this file.
	9	*
	10	* This Original Code and all software distributed under the License are
	11	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
	12	* OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
	13	* LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
	14	* PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
	15	* specific language governing rights and limitations under the License.
	16	*/
	17
	18
	19	/* crypto/rc5/rc5_enc.c */
	20	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
	21	* All rights reserved.
	22	*
	23	* This package is an SSL implementation written
	24	* by Eric Young (eay@cryptsoft.com).
	25	* The implementation was written so as to conform with Netscapes SSL.
	26	*
	27	* This library is free for commercial and non-commercial use as long as
	28	* the following conditions are aheared to. The following conditions
	29	* apply to all code found in this distribution, be it the RC4, RSA,
	30	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	31	* included with this distribution is covered by the same copyright terms
	32	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	33	*
	34	* Copyright remains Eric Young's, and as such any Copyright notices in
	35	* the code are not to be removed.
	36	* If this package is used in a product, Eric Young should be given attribution
	37	* as the author of the parts of the library used.
	38	* This can be in the form of a textual message at program startup or
	39	* in documentation (online or textual) provided with the package.
	40	*
	41	* Redistribution and use in source and binary forms, with or without
	42	* modification, are permitted provided that the following conditions
	43	* are met:
	44	* 1. Redistributions of source code must retain the copyright
	45	* notice, this list of conditions and the following disclaimer.
	46	* 2. Redistributions in binary form must reproduce the above copyright
	47	* notice, this list of conditions and the following disclaimer in the
	48	* documentation and/or other materials provided with the distribution.
	49	* 3. All advertising materials mentioning features or use of this software
	50	* must display the following acknowledgement:
	51	* "This product includes cryptographic software written by
	52	* Eric Young (eay@cryptsoft.com)"
	53	* The word 'cryptographic' can be left out if the rouines from the library
	54	* being used are not cryptographic related :-).
	55	* 4. If you include any Windows specific code (or a derivative thereof) from
	56	* the apps directory (application code) you must include an acknowledgement:
	57	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	58	*
	59	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	60	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	61	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	62	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	63	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	64	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
65	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
66	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
67	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
68	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
69	* SUCH DAMAGE.
70	*
71	* The licence and distribution terms for any publically available version or
72	* derivative of this code cannot be changed. i.e. this code cannot simply be
73	* copied and put under another distribution licence
74	* [including the GNU Public Licence.]
75	*/
76
77	#include <stdio.h>
78	#include <openssl/rc5.h>
79	#include "rc5_locl.h"
80
81	#ifndef _OPENSSL_APPLE_CDSA_
82	void RC5_32_cbc_encrypt(unsigned char in, unsigned char out, long length,
83	RC5_32_KEY ks, unsigned char iv, int encrypt)
84	{
85	register unsigned long tin0,tin1;
86	register unsigned long tout0,tout1,xor0,xor1;
87	register long l=length;
88	unsigned long tin[2];
89
90	if (encrypt)
91	{
92	c2l(iv,tout0);
93	c2l(iv,tout1);
94	iv-=8;
95	for (l-=8; l>=0; l-=8)
96	{
97	c2l(in,tin0);
98	c2l(in,tin1);
99	tin0^=tout0;
100	tin1^=tout1;
101	tin[0]=tin0;
102	tin[1]=tin1;
103	RC5_32_encrypt(tin,ks);
104	tout0=tin[0]; l2c(tout0,out);
105	tout1=tin[1]; l2c(tout1,out);
106	}
107	if (l != -8)
108	{
109	c2ln(in,tin0,tin1,l+8);
110	tin0^=tout0;
111	tin1^=tout1;
112	tin[0]=tin0;
113	tin[1]=tin1;
114	RC5_32_encrypt(tin,ks);
115	tout0=tin[0]; l2c(tout0,out);
116	tout1=tin[1]; l2c(tout1,out);
117	}
118	l2c(tout0,iv);
119	l2c(tout1,iv);
120	}
121	else
122	{
123	c2l(iv,xor0);
124	c2l(iv,xor1);
125	iv-=8;
126	for (l-=8; l>=0; l-=8)
127	{
128	c2l(in,tin0); tin[0]=tin0;
129	c2l(in,tin1); tin[1]=tin1;
130	RC5_32_decrypt(tin,ks);
131	tout0=tin[0]^xor0;
132	tout1=tin[1]^xor1;
133	l2c(tout0,out);
134	l2c(tout1,out);
135	xor0=tin0;
136	xor1=tin1;
137	}
138	if (l != -8)
139	{
140	c2l(in,tin0); tin[0]=tin0;
141	c2l(in,tin1); tin[1]=tin1;
142	RC5_32_decrypt(tin,ks);
143	tout0=tin[0]^xor0;
144	tout1=tin[1]^xor1;
145	l2cn(tout0,tout1,out,l+8);
146	xor0=tin0;
147	xor1=tin1;
148	}
149	l2c(xor0,iv);
150	l2c(xor1,iv);
151	}
152	tin0=tin1=tout0=tout1=xor0=xor1=0;
153	tin[0]=tin[1]=0;
154	}
155
156	#endif
157
158	#ifdef _OPENSSL_APPLE_CDSA_
159	void RC5_32_encrypt(RC5_32_INT d, RC5_32_KEY key)
160	#else
161	void RC5_32_encrypt(unsigned long d, RC5_32_KEY key)
162	#endif /* _OPENSSL_APPLE_CDSA_ */
163	{
164	RC5_32_INT a,b,*s;
165
166	s=key->data;
167
168	a=d[0]+s[0];
169	b=d[1]+s[1];
170	E_RC5_32(a,b,s, 2);
171	E_RC5_32(a,b,s, 4);
172	E_RC5_32(a,b,s, 6);
173	E_RC5_32(a,b,s, 8);
174	E_RC5_32(a,b,s,10);
175	E_RC5_32(a,b,s,12);
176	E_RC5_32(a,b,s,14);
177	E_RC5_32(a,b,s,16);
178	if (key->rounds == 12)
179	{
180	E_RC5_32(a,b,s,18);
181	E_RC5_32(a,b,s,20);
182	E_RC5_32(a,b,s,22);
183	E_RC5_32(a,b,s,24);
184	}
185	else if (key->rounds == 16)
186	{
187	/* Do a full expansion to avoid a jump */
188	E_RC5_32(a,b,s,18);
189	E_RC5_32(a,b,s,20);
190	E_RC5_32(a,b,s,22);
191	E_RC5_32(a,b,s,24);
192	E_RC5_32(a,b,s,26);
193	E_RC5_32(a,b,s,28);
194	E_RC5_32(a,b,s,30);
195	E_RC5_32(a,b,s,32);
196	}
197	d[0]=a;
198	d[1]=b;
199	}
200
201	#ifdef _OPENSSL_APPLE_CDSA_
202	void RC5_32_decrypt(RC5_32_INT d, RC5_32_KEY key)
203	#else
204	void RC5_32_decrypt(unsigned long d, RC5_32_KEY key)
205	#endif /* _OPENSSL_APPLE_CDSA_*/
206	{
207	RC5_32_INT a,b,*s;
208
209	s=key->data;
210
211	a=d[0];
212	b=d[1];
213	if (key->rounds == 16)
214	{
215	D_RC5_32(a,b,s,32);
216	D_RC5_32(a,b,s,30);
217	D_RC5_32(a,b,s,28);
218	D_RC5_32(a,b,s,26);
219	/* Do a full expansion to avoid a jump */
220	D_RC5_32(a,b,s,24);
221	D_RC5_32(a,b,s,22);
222	D_RC5_32(a,b,s,20);
223	D_RC5_32(a,b,s,18);
224	}
225	else if (key->rounds == 12)
226	{
227	D_RC5_32(a,b,s,24);
228	D_RC5_32(a,b,s,22);
229	D_RC5_32(a,b,s,20);
230	D_RC5_32(a,b,s,18);
231	}
232	D_RC5_32(a,b,s,16);
233	D_RC5_32(a,b,s,14);
234	D_RC5_32(a,b,s,12);
235	D_RC5_32(a,b,s,10);
236	D_RC5_32(a,b,s, 8);
237	D_RC5_32(a,b,s, 6);
238	D_RC5_32(a,b,s, 4);
239	D_RC5_32(a,b,s, 2);
240	d[0]=a-s[0];
241	d[1]=b-s[1];
242	}
243