sl@0: /* crypto/rc2/rc2_locl.h */
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: #undef c2l
sl@0: #define c2l(c,l)	(l =((unsigned long)(*((c)++)))    , \
sl@0: 			 l|=((unsigned long)(*((c)++)))<< 8L, \
sl@0: 			 l|=((unsigned long)(*((c)++)))<<16L, \
sl@0: 			 l|=((unsigned long)(*((c)++)))<<24L)
sl@0: 
sl@0: /* NOTE - c is not incremented as per c2l */
sl@0: #undef c2ln
sl@0: #define c2ln(c,l1,l2,n)	{ \
sl@0: 			c+=n; \
sl@0: 			l1=l2=0; \
sl@0: 			switch (n) { \
sl@0: 			case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
sl@0: 			case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
sl@0: 			case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
sl@0: 			case 5: l2|=((unsigned long)(*(--(c))));     \
sl@0: 			case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
sl@0: 			case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
sl@0: 			case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
sl@0: 			case 1: l1|=((unsigned long)(*(--(c))));     \
sl@0: 				} \
sl@0: 			}
sl@0: 
sl@0: #undef l2c
sl@0: #define l2c(l,c)	(*((c)++)=(unsigned char)(((l)     )&0xff), \
sl@0: 			 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
sl@0: 			 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
sl@0: 			 *((c)++)=(unsigned char)(((l)>>24L)&0xff))
sl@0: 
sl@0: /* NOTE - c is not incremented as per l2c */
sl@0: #undef l2cn
sl@0: #define l2cn(l1,l2,c,n)	{ \
sl@0: 			c+=n; \
sl@0: 			switch (n) { \
sl@0: 			case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
sl@0: 			case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
sl@0: 			case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
sl@0: 			case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
sl@0: 			case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
sl@0: 			case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
sl@0: 			case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
sl@0: 			case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
sl@0: 				} \
sl@0: 			}
sl@0: 
sl@0: /* NOTE - c is not incremented as per n2l */
sl@0: #define n2ln(c,l1,l2,n)	{ \
sl@0: 			c+=n; \
sl@0: 			l1=l2=0; \
sl@0: 			switch (n) { \
sl@0: 			case 8: l2 =((unsigned long)(*(--(c))))    ; \
sl@0: 			case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
sl@0: 			case 6: l2|=((unsigned long)(*(--(c))))<<16; \
sl@0: 			case 5: l2|=((unsigned long)(*(--(c))))<<24; \
sl@0: 			case 4: l1 =((unsigned long)(*(--(c))))    ; \
sl@0: 			case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
sl@0: 			case 2: l1|=((unsigned long)(*(--(c))))<<16; \
sl@0: 			case 1: l1|=((unsigned long)(*(--(c))))<<24; \
sl@0: 				} \
sl@0: 			}
sl@0: 
sl@0: /* NOTE - c is not incremented as per l2n */
sl@0: #define l2nn(l1,l2,c,n)	{ \
sl@0: 			c+=n; \
sl@0: 			switch (n) { \
sl@0: 			case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \
sl@0: 			case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
sl@0: 			case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
sl@0: 			case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
sl@0: 			case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \
sl@0: 			case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
sl@0: 			case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
sl@0: 			case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
sl@0: 				} \
sl@0: 			}
sl@0: 
sl@0: #undef n2l
sl@0: #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24L, \
sl@0:                          l|=((unsigned long)(*((c)++)))<<16L, \
sl@0:                          l|=((unsigned long)(*((c)++)))<< 8L, \
sl@0:                          l|=((unsigned long)(*((c)++))))
sl@0: 
sl@0: #undef l2n
sl@0: #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
sl@0:                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
sl@0:                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
sl@0:                          *((c)++)=(unsigned char)(((l)     )&0xff))
sl@0: 
sl@0: #define C_RC2(n) \
sl@0: 	t=(x0+(x1& ~x3)+(x2&x3)+ *(p0++))&0xffff; \
sl@0: 	x0=(t<<1)|(t>>15); \
sl@0: 	t=(x1+(x2& ~x0)+(x3&x0)+ *(p0++))&0xffff; \
sl@0: 	x1=(t<<2)|(t>>14); \
sl@0: 	t=(x2+(x3& ~x1)+(x0&x1)+ *(p0++))&0xffff; \
sl@0: 	x2=(t<<3)|(t>>13); \
sl@0: 	t=(x3+(x0& ~x2)+(x1&x2)+ *(p0++))&0xffff; \
sl@0: 	x3=(t<<5)|(t>>11);
sl@0: