crypto/rc5/rc5_locl.h

   1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  */
  57
  58 #include <stdlib.h>
  59
  60 #undef c2l
  61 #define c2l(c,l)        (l =((unsigned long)(*((c)++)))    , \
  62                          l|=((unsigned long)(*((c)++)))<< 8L, \
  63                          l|=((unsigned long)(*((c)++)))<<16L, \
  64                          l|=((unsigned long)(*((c)++)))<<24L)
  65
  66 /* NOTE - c is not incremented as per c2l */
  67 #undef c2ln
  68 #define c2ln(c,l1,l2,n) { \
  69                         c+=n; \
  70                         l1=l2=0; \
  71                         switch (n) { \
  72                         case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
  73                         case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
  74                         case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
  75                         case 5: l2|=((unsigned long)(*(--(c))));     \
  76                         case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
  77                         case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
  78                         case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
  79                         case 1: l1|=((unsigned long)(*(--(c))));     \
  80                                 } \
  81                         }
  82
  83 #undef l2c
  84 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)     )&0xff), \
  85                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
  86                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
  87                          *((c)++)=(unsigned char)(((l)>>24L)&0xff))
  88
  89 /* NOTE - c is not incremented as per l2c */
  90 #undef l2cn
  91 #define l2cn(l1,l2,c,n) { \
  92                         c+=n; \
  93                         switch (n) { \
  94                         case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
  95                         case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
  96                         case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
  97                         case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
  98                         case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
  99                         case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
 100                         case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
 101                         case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
 102                                 } \
 103                         }
 104
 105 /* NOTE - c is not incremented as per n2l */
 106 #define n2ln(c,l1,l2,n) { \
 107                         c+=n; \
 108                         l1=l2=0; \
 109                         switch (n) { \
 110                         case 8: l2 =((unsigned long)(*(--(c))))    ; \
 111                         case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
 112                         case 6: l2|=((unsigned long)(*(--(c))))<<16; \
 113                         case 5: l2|=((unsigned long)(*(--(c))))<<24; \
 114                         case 4: l1 =((unsigned long)(*(--(c))))    ; \
 115                         case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
 116                         case 2: l1|=((unsigned long)(*(--(c))))<<16; \
 117                         case 1: l1|=((unsigned long)(*(--(c))))<<24; \
 118                                 } \
 119                         }
 120
 121 /* NOTE - c is not incremented as per l2n */
 122 #define l2nn(l1,l2,c,n) { \
 123                         c+=n; \
 124                         switch (n) { \
 125                         case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \
 126                         case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
 127                         case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
 128                         case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
 129                         case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \
 130                         case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
 131                         case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
 132                         case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
 133                                 } \
 134                         }
 135
 136 #undef n2l
 137 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24L, \
 138                          l|=((unsigned long)(*((c)++)))<<16L, \
 139                          l|=((unsigned long)(*((c)++)))<< 8L, \
 140                          l|=((unsigned long)(*((c)++))))
 141
 142 #undef l2n
 143 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
 144                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
 145                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
 146                          *((c)++)=(unsigned char)(((l)     )&0xff))
 147
 148 #if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER))
 149 # define ROTATE_l32(a,n)     _lrotl(a,n)
 150 # define ROTATE_r32(a,n)     _lrotr(a,n)
 151 #elif defined(__ICC)
 152 # define ROTATE_l32(a,n)     _rotl(a,n)
 153 # define ROTATE_r32(a,n)     _rotr(a,n)
 154 #elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC)
 155 # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
 156 #  define ROTATE_l32(a,n)       ({ register unsigned int ret;   \
 157                                         asm ("roll %%cl,%0"     \
 158                                                 : "=r"(ret)     \
 159                                                 : "c"(n),"0"((unsigned int)(a)) \
 160                                                 : "cc");        \
 161                                         ret;                    \
 162                                 })
 163 #  define ROTATE_r32(a,n)       ({ register unsigned int ret;   \
 164                                         asm ("rorl %%cl,%0"     \
 165                                                 : "=r"(ret)     \
 166                                                 : "c"(n),"0"((unsigned int)(a)) \
 167                                                 : "cc");        \
 168                                         ret;                    \
 169                                 })
 170 # endif
 171 #endif
 172 #ifndef ROTATE_l32
 173 # define ROTATE_l32(a,n)     (((a)<<(n&0x1f))|(((a)&0xffffffff)>>(32-(n&0x1f))))
 174 #endif
 175 #ifndef ROTATE_r32
 176 # define ROTATE_r32(a,n)     (((a)<<(32-(n&0x1f)))|(((a)&0xffffffff)>>(n&0x1f)))
 177 #endif
 178
 179 #define RC5_32_MASK     0xffffffffL
 180
 181 #define RC5_16_P        0xB7E1
 182 #define RC5_16_Q        0x9E37
 183 #define RC5_32_P        0xB7E15163L
 184 #define RC5_32_Q        0x9E3779B9L
 185 #define RC5_64_P        0xB7E151628AED2A6BLL
 186 #define RC5_64_Q        0x9E3779B97F4A7C15LL
 187
 188 #define E_RC5_32(a,b,s,n) \
 189         a^=b; \
 190         a=ROTATE_l32(a,b); \
 191         a+=s[n]; \
 192         a&=RC5_32_MASK; \
 193         b^=a; \
 194         b=ROTATE_l32(b,a); \
 195         b+=s[n+1]; \
 196         b&=RC5_32_MASK;
 197
 198 #define D_RC5_32(a,b,s,n) \
 199         b-=s[n+1]; \
 200         b&=RC5_32_MASK; \
 201         b=ROTATE_r32(b,a); \
 202         b^=a; \
 203         a-=s[n]; \
 204         a&=RC5_32_MASK; \
 205         a=ROTATE_r32(a,b); \
 206         a^=b;