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src/libdigidoc/openssl/crypto/rc5/rc5_locl.h
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00001 /* crypto/rc5/rc5_locl.h */
00002 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
00003  * All rights reserved.
00004  *
00005  * This package is an SSL implementation written
00006  * by Eric Young (eay@cryptsoft.com).
00007  * The implementation was written so as to conform with Netscapes SSL.
00008  * 
00009  * This library is free for commercial and non-commercial use as long as
00010  * the following conditions are aheared to.  The following conditions
00011  * apply to all code found in this distribution, be it the RC4, RSA,
00012  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
00013  * included with this distribution is covered by the same copyright terms
00014  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
00015  * 
00016  * Copyright remains Eric Young's, and as such any Copyright notices in
00017  * the code are not to be removed.
00018  * If this package is used in a product, Eric Young should be given attribution
00019  * as the author of the parts of the library used.
00020  * This can be in the form of a textual message at program startup or
00021  * in documentation (online or textual) provided with the package.
00022  * 
00023  * Redistribution and use in source and binary forms, with or without
00024  * modification, are permitted provided that the following conditions
00025  * are met:
00026  * 1. Redistributions of source code must retain the copyright
00027  *    notice, this list of conditions and the following disclaimer.
00028  * 2. Redistributions in binary form must reproduce the above copyright
00029  *    notice, this list of conditions and the following disclaimer in the
00030  *    documentation and/or other materials provided with the distribution.
00031  * 3. All advertising materials mentioning features or use of this software
00032  *    must display the following acknowledgement:
00033  *    "This product includes cryptographic software written by
00034  *     Eric Young (eay@cryptsoft.com)"
00035  *    The word 'cryptographic' can be left out if the rouines from the library
00036  *    being used are not cryptographic related :-).
00037  * 4. If you include any Windows specific code (or a derivative thereof) from 
00038  *    the apps directory (application code) you must include an acknowledgement:
00039  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
00040  * 
00041  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
00042  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00043  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00044  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
00045  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00046  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00047  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00048  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00049  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00050  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00051  * SUCH DAMAGE.
00052  * 
00053  * The licence and distribution terms for any publically available version or
00054  * derivative of this code cannot be changed.  i.e. this code cannot simply be
00055  * copied and put under another distribution licence
00056  * [including the GNU Public Licence.]
00057  */
00058 
00059 #include <stdlib.h>
00060 
00061 #undef c2l
00062 #define c2l(c,l)        (l =((unsigned long)(*((c)++)))    , \
00063                          l|=((unsigned long)(*((c)++)))<< 8L, \
00064                          l|=((unsigned long)(*((c)++)))<<16L, \
00065                          l|=((unsigned long)(*((c)++)))<<24L)
00066 
00067 /* NOTE - c is not incremented as per c2l */
00068 #undef c2ln
00069 #define c2ln(c,l1,l2,n) { \
00070                         c+=n; \
00071                         l1=l2=0; \
00072                         switch (n) { \
00073                         case 8: l2 =((unsigned long)(*(--(c))))<<24L; \
00074                         case 7: l2|=((unsigned long)(*(--(c))))<<16L; \
00075                         case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \
00076                         case 5: l2|=((unsigned long)(*(--(c))));     \
00077                         case 4: l1 =((unsigned long)(*(--(c))))<<24L; \
00078                         case 3: l1|=((unsigned long)(*(--(c))))<<16L; \
00079                         case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \
00080                         case 1: l1|=((unsigned long)(*(--(c))));     \
00081                                 } \
00082                         }
00083 
00084 #undef l2c
00085 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)     )&0xff), \
00086                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
00087                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
00088                          *((c)++)=(unsigned char)(((l)>>24L)&0xff))
00089 
00090 /* NOTE - c is not incremented as per l2c */
00091 #undef l2cn
00092 #define l2cn(l1,l2,c,n) { \
00093                         c+=n; \
00094                         switch (n) { \
00095                         case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
00096                         case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
00097                         case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
00098                         case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
00099                         case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
00100                         case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
00101                         case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
00102                         case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
00103                                 } \
00104                         }
00105 
00106 /* NOTE - c is not incremented as per n2l */
00107 #define n2ln(c,l1,l2,n) { \
00108                         c+=n; \
00109                         l1=l2=0; \
00110                         switch (n) { \
00111                         case 8: l2 =((unsigned long)(*(--(c))))    ; \
00112                         case 7: l2|=((unsigned long)(*(--(c))))<< 8; \
00113                         case 6: l2|=((unsigned long)(*(--(c))))<<16; \
00114                         case 5: l2|=((unsigned long)(*(--(c))))<<24; \
00115                         case 4: l1 =((unsigned long)(*(--(c))))    ; \
00116                         case 3: l1|=((unsigned long)(*(--(c))))<< 8; \
00117                         case 2: l1|=((unsigned long)(*(--(c))))<<16; \
00118                         case 1: l1|=((unsigned long)(*(--(c))))<<24; \
00119                                 } \
00120                         }
00121 
00122 /* NOTE - c is not incremented as per l2n */
00123 #define l2nn(l1,l2,c,n) { \
00124                         c+=n; \
00125                         switch (n) { \
00126                         case 8: *(--(c))=(unsigned char)(((l2)    )&0xff); \
00127                         case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
00128                         case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
00129                         case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
00130                         case 4: *(--(c))=(unsigned char)(((l1)    )&0xff); \
00131                         case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
00132                         case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
00133                         case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
00134                                 } \
00135                         }
00136 
00137 #undef n2l
00138 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24L, \
00139                          l|=((unsigned long)(*((c)++)))<<16L, \
00140                          l|=((unsigned long)(*((c)++)))<< 8L, \
00141                          l|=((unsigned long)(*((c)++))))
00142 
00143 #undef l2n
00144 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
00145                          *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
00146                          *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
00147                          *((c)++)=(unsigned char)(((l)     )&0xff))
00148 
00149 #if (defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER)) || defined(__ICC)
00150 #define ROTATE_l32(a,n)     _lrotl(a,n)
00151 #define ROTATE_r32(a,n)     _lrotr(a,n)
00152 #elif defined(__GNUC__) && __GNUC__>=2 && !defined(__STRICT_ANSI__) && !defined(OPENSSL_NO_ASM) && !defined(OPENSSL_NO_INLINE_ASM) && !defined(PEDANTIC)
00153 # if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
00154 #  define ROTATE_l32(a,n)       ({ register unsigned int ret;   \
00155                                         asm ("roll %%cl,%0"     \
00156                                                 : "=r"(ret)     \
00157                                                 : "c"(n),"0"(a) \
00158                                                 : "cc");        \
00159                                         ret;                    \
00160                                 })
00161 #  define ROTATE_r32(a,n)       ({ register unsigned int ret;   \
00162                                         asm ("rorl %%cl,%0"     \
00163                                                 : "=r"(ret)     \
00164                                                 : "c"(n),"0"(a) \
00165                                                 : "cc");        \
00166                                         ret;                    \
00167                                 })
00168 # endif
00169 #endif
00170 #ifndef ROTATE_l32
00171 #define ROTATE_l32(a,n)     (((a)<<(n&0x1f))|(((a)&0xffffffff)>>(32-(n&0x1f))))
00172 #endif
00173 #ifndef ROTATE_r32
00174 #define ROTATE_r32(a,n)     (((a)<<(32-(n&0x1f)))|(((a)&0xffffffff)>>(n&0x1f)))
00175 #endif
00176 
00177 #define RC5_32_MASK     0xffffffffL
00178 
00179 #define RC5_16_P        0xB7E1
00180 #define RC5_16_Q        0x9E37
00181 #define RC5_32_P        0xB7E15163L
00182 #define RC5_32_Q        0x9E3779B9L
00183 #define RC5_64_P        0xB7E151628AED2A6BLL
00184 #define RC5_64_Q        0x9E3779B97F4A7C15LL
00185 
00186 #define E_RC5_32(a,b,s,n) \
00187         a^=b; \
00188         a=ROTATE_l32(a,b); \
00189         a+=s[n]; \
00190         a&=RC5_32_MASK; \
00191         b^=a; \
00192         b=ROTATE_l32(b,a); \
00193         b+=s[n+1]; \
00194         b&=RC5_32_MASK;
00195 
00196 #define D_RC5_32(a,b,s,n) \
00197         b-=s[n+1]; \
00198         b&=RC5_32_MASK; \
00199         b=ROTATE_r32(b,a); \
00200         b^=a; \
00201         a-=s[n]; \
00202         a&=RC5_32_MASK; \
00203         a=ROTATE_r32(a,b); \
00204         a^=b;
00205 
00206 
00207 
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