AppleCSP/open_ssl/misc/rc5_locl.h

   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_locl.h */
  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 <stdlib.h>
  78
  79 #undef c2l
  80 #define c2l(c,l)        (l =((unsigned long)(*((c)++)))    , \
  81                          l|=((unsigned long)(*((c)++)))<< 8L, \
  82                          l|=((unsigned long)(*((c)++)))<<16L, \
  83                          l|=((unsigned long)(*((c)++)))<<24L)
  84
  85 /* NOTE - c is not incremented as per c2l */
  86 #undef c2ln
  87 #define c2ln(c,l1,l2,n) { \
  88                         c+=n; \
  89                         l1=l2=0; \
  90                         switch (n) { \
  91                         case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
  92                         case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
  93                         case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
  94                         case 5: l2|=((unsigned long)(*(--(c))));     \
  95                         case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
  96                         case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
  97                         case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
  98                         case 1: l1|=((unsigned long)(*(--(c))));     \
  99                                 } \
 100                         }
 101
 102 #undef l2c
 103 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)     )&0xff), \
 104                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
 105                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
 106                          *((c)++)=(unsigned char)(((l)>>24L)&0xff))
 107
 108 /* NOTE - c is not incremented as per l2c */
 109 #undef l2cn
 110 #define l2cn(l1,l2,c,n) { \
 111                         c+=n; \
 112                         switch (n) { \
 113                         case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
 114                         case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
 115                         case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
 116                         case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
 117                         case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
 118                         case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
 119                         case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
 120                         case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
 121                                 } \
 122                         }
 123
 124 /* NOTE - c is not incremented as per n2l */
 125 #define n2ln(c,l1,l2,n) { \
 126                         c+=n; \
 127                         l1=l2=0; \
 128                         switch (n) { \
 129                         case 8: l2 =((unsigned long)(*(--(c))))    ; \
 130                         case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
 131                         case 6: l2|=((unsigned long)(*(--(c))))<<16; \
 132                         case 5: l2|=((unsigned long)(*(--(c))))<<24; \
 133                         case 4: l1 =((unsigned long)(*(--(c))))    ; \
 134                         case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
 135                         case 2: l1|=((unsigned long)(*(--(c))))<<16; \
 136                         case 1: l1|=((unsigned long)(*(--(c))))<<24; \
 137                                 } \
 138                         }
 139
 140 /* NOTE - c is not incremented as per l2n */
 141 #define l2nn(l1,l2,c,n) { \
 142                         c+=n; \
 143                         switch (n) { \
 144                         case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \
 145                         case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
 146                         case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
 147                         case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
 148                         case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \
 149                         case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
 150                         case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
 151                         case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
 152                                 } \
 153                         }
 154
 155 #undef n2l
 156 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24L, \
 157                          l|=((unsigned long)(*((c)++)))<<16L, \
 158                          l|=((unsigned long)(*((c)++)))<< 8L, \
 159                          l|=((unsigned long)(*((c)++))))
 160
 161 #undef l2n
 162 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
 163                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
 164                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
 165                          *((c)++)=(unsigned char)(((l)     )&0xff))
 166
 167 #if defined(WIN32) && defined(_MSC_VER)
 168 #define ROTATE_l32(a,n)     _lrotl(a,n)
 169 #define ROTATE_r32(a,n)     _lrotr(a,n)
 170 #else
 171 #define ROTATE_l32(a,n)     (((a)<<(n&0x1f))|(((a)&0xffffffff)>>(32-(n&0x1f))))
 172 #define ROTATE_r32(a,n)     (((a)<<(32-(n&0x1f)))|(((a)&0xffffffff)>>(n&0x1f)))
 173 #endif
 174
 175 #define RC5_32_MASK     0xffffffffL
 176
 177 #define RC5_16_P        0xB7E1
 178 #define RC5_16_Q        0x9E37
 179 #define RC5_32_P        0xB7E15163L
 180 #define RC5_32_Q        0x9E3779B9L
 181 #define RC5_64_P        0xB7E151628AED2A6BLL
 182 #define RC5_64_Q        0x9E3779B97F4A7C15LL
 183
 184 #define E_RC5_32(a,b,s,n) \
 185         a^=b; \
 186         a=ROTATE_l32(a,b); \
 187         a+=s[n]; \
 188         a&=RC5_32_MASK; \
 189         b^=a; \
 190         b=ROTATE_l32(b,a); \
 191         b+=s[n+1]; \
 192         b&=RC5_32_MASK;
 193
 194 #define D_RC5_32(a,b,s,n) \
 195         b-=s[n+1]; \
 196         b&=RC5_32_MASK; \
 197         b=ROTATE_r32(b,a); \
 198         b^=a; \
 199         a-=s[n]; \
 200         a&=RC5_32_MASK; \
 201         a=ROTATE_r32(a,b); \
 202         a^=b;
 203
 204
 205