/* crypto/rc2/rc2_locl.h */

/* 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.]

 */

#undef c2l

#define c2l(c,l)	(l =((unsigned long)(*((c)++)))    , \

			 l|=((unsigned long)(*((c)++)))<< 8L, \

			 l|=((unsigned long)(*((c)++)))<<16L, \

			 l|=((unsigned long)(*((c)++)))<<24L)

/* NOTE - c is not incremented as per c2l */

#undef c2ln

#define c2ln(c,l1,l2,n)	{ \

			c+=n; \

			l1=l2=0; \

			switch (n) { \

			case 8: l2 =((unsigned long)(*(--(c))))<<24L; \

			case 7: l2|=((unsigned long)(*(--(c))))<<16L; \

			case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \

			case 5: l2|=((unsigned long)(*(--(c))));     \

			case 4: l1 =((unsigned long)(*(--(c))))<<24L; \

			case 3: l1|=((unsigned long)(*(--(c))))<<16L; \

			case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \

			case 1: l1|=((unsigned long)(*(--(c))));     \

				} \

			}

#undef l2c

#define l2c(l,c)	(*((c)++)=(unsigned char)(((l)     )&0xff), \

			 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \

			 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \

			 *((c)++)=(unsigned char)(((l)>>24L)&0xff))

/* NOTE - c is not incremented as per l2c */

#undef l2cn

#define l2cn(l1,l2,c,n)	{ \

			c+=n; \

			switch (n) { \

			case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \

			case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \

			case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \

			case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \

			case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \

			case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \

			case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \

			case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \

				} \

			}

/* NOTE - c is not incremented as per n2l */

#define n2ln(c,l1,l2,n)	{ \

			c+=n; \

			l1=l2=0; \

			switch (n) { \

			case 8: l2 =((unsigned long)(*(--(c))))    ; \

			case 7: l2|=((unsigned long)(*(--(c))))<< 8; \

			case 6: l2|=((unsigned long)(*(--(c))))<<16; \

			case 5: l2|=((unsigned long)(*(--(c))))<<24; \

			case 4: l1 =((unsigned long)(*(--(c))))    ; \

			case 3: l1|=((unsigned long)(*(--(c))))<< 8; \

			case 2: l1|=((unsigned long)(*(--(c))))<<16; \

			case 1: l1|=((unsigned long)(*(--(c))))<<24; \

				} \

			}

/* NOTE - c is not incremented as per l2n */

#define l2nn(l1,l2,c,n)	{ \

			c+=n; \

			switch (n) { \

			case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \

			case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \

			case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \

			case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \

			case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \

			case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \

			case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \

			case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \

				} \

			}

#undef n2l

#define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24L, \

                         l|=((unsigned long)(*((c)++)))<<16L, \

                         l|=((unsigned long)(*((c)++)))<< 8L, \

                         l|=((unsigned long)(*((c)++))))

#undef l2n

#define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \

                         *((c)++)=(unsigned char)(((l)>>16L)&0xff), \

                         *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \

                         *((c)++)=(unsigned char)(((l)     )&0xff))

#define C_RC2(n) \

	t=(x0+(x1& ~x3)+(x2&x3)+ *(p0++))&0xffff; \

	x0=(t<<1)|(t>>15); \

	t=(x1+(x2& ~x0)+(x3&x0)+ *(p0++))&0xffff; \

	x1=(t<<2)|(t>>14); \

	t=(x2+(x3& ~x1)+(x0&x1)+ *(p0++))&0xffff; \

	x2=(t<<3)|(t>>13); \

	t=(x3+(x0& ~x2)+(x1&x2)+ *(p0++))&0xffff; \

	x3=(t<<5)|(t>>11);