cast_lcl.h revision 160814
1/* crypto/cast/cast_lcl.h */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58 59 60#include "e_os.h" 61 62#ifdef OPENSSL_SYS_WIN32 63#include <stdlib.h> 64#endif 65 66 67#undef c2l 68#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ 69 l|=((unsigned long)(*((c)++)))<< 8L, \ 70 l|=((unsigned long)(*((c)++)))<<16L, \ 71 l|=((unsigned long)(*((c)++)))<<24L) 72 73/* NOTE - c is not incremented as per c2l */ 74#undef c2ln 75#define c2ln(c,l1,l2,n) { \ 76 c+=n; \ 77 l1=l2=0; \ 78 switch (n) { \ 79 case 8: l2 =((unsigned long)(*(--(c))))<<24L; \ 80 case 7: l2|=((unsigned long)(*(--(c))))<<16L; \ 81 case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \ 82 case 5: l2|=((unsigned long)(*(--(c)))); \ 83 case 4: l1 =((unsigned long)(*(--(c))))<<24L; \ 84 case 3: l1|=((unsigned long)(*(--(c))))<<16L; \ 85 case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \ 86 case 1: l1|=((unsigned long)(*(--(c)))); \ 87 } \ 88 } 89 90#undef l2c 91#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 92 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 93 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 94 *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 95 96/* NOTE - c is not incremented as per l2c */ 97#undef l2cn 98#define l2cn(l1,l2,c,n) { \ 99 c+=n; \ 100 switch (n) { \ 101 case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ 102 case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ 103 case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ 104 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 105 case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ 106 case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ 107 case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ 108 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 109 } \ 110 } 111 112/* NOTE - c is not incremented as per n2l */ 113#define n2ln(c,l1,l2,n) { \ 114 c+=n; \ 115 l1=l2=0; \ 116 switch (n) { \ 117 case 8: l2 =((unsigned long)(*(--(c)))) ; \ 118 case 7: l2|=((unsigned long)(*(--(c))))<< 8; \ 119 case 6: l2|=((unsigned long)(*(--(c))))<<16; \ 120 case 5: l2|=((unsigned long)(*(--(c))))<<24; \ 121 case 4: l1 =((unsigned long)(*(--(c)))) ; \ 122 case 3: l1|=((unsigned long)(*(--(c))))<< 8; \ 123 case 2: l1|=((unsigned long)(*(--(c))))<<16; \ 124 case 1: l1|=((unsigned long)(*(--(c))))<<24; \ 125 } \ 126 } 127 128/* NOTE - c is not incremented as per l2n */ 129#define l2nn(l1,l2,c,n) { \ 130 c+=n; \ 131 switch (n) { \ 132 case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \ 133 case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 134 case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 135 case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 136 case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \ 137 case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 138 case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 139 case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 140 } \ 141 } 142 143#undef n2l 144#define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \ 145 l|=((unsigned long)(*((c)++)))<<16L, \ 146 l|=((unsigned long)(*((c)++)))<< 8L, \ 147 l|=((unsigned long)(*((c)++)))) 148 149#undef l2n 150#define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ 151 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 152 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 153 *((c)++)=(unsigned char)(((l) )&0xff)) 154 155#if defined(OPENSSL_SYS_WIN32) && defined(_MSC_VER) 156#define ROTL(a,n) (_lrotl(a,n)) 157#else 158#define ROTL(a,n) ((((a)<<(n))&0xffffffffL)|((a)>>(32-(n)))) 159#endif 160 161#define C_M 0x3fc 162#define C_0 22L 163#define C_1 14L 164#define C_2 6L 165#define C_3 2L /* left shift */ 166 167/* The rotate has an extra 16 added to it to help the x86 asm */ 168#if defined(CAST_PTR) 169#define E_CAST(n,key,L,R,OP1,OP2,OP3) \ 170 { \ 171 int i; \ 172 t=(key[n*2] OP1 R)&0xffffffffL; \ 173 i=key[n*2+1]; \ 174 t=ROTL(t,i); \ 175 L^= (((((*(CAST_LONG *)((unsigned char *) \ 176 CAST_S_table0+((t>>C_2)&C_M)) OP2 \ 177 *(CAST_LONG *)((unsigned char *) \ 178 CAST_S_table1+((t<<C_3)&C_M)))&0xffffffffL) OP3 \ 179 *(CAST_LONG *)((unsigned char *) \ 180 CAST_S_table2+((t>>C_0)&C_M)))&0xffffffffL) OP1 \ 181 *(CAST_LONG *)((unsigned char *) \ 182 CAST_S_table3+((t>>C_1)&C_M)))&0xffffffffL; \ 183 } 184#elif defined(CAST_PTR2) 185#define E_CAST(n,key,L,R,OP1,OP2,OP3) \ 186 { \ 187 int i; \ 188 CAST_LONG u,v,w; \ 189 w=(key[n*2] OP1 R)&0xffffffffL; \ 190 i=key[n*2+1]; \ 191 w=ROTL(w,i); \ 192 u=w>>C_2; \ 193 v=w<<C_3; \ 194 u&=C_M; \ 195 v&=C_M; \ 196 t= *(CAST_LONG *)((unsigned char *)CAST_S_table0+u); \ 197 u=w>>C_0; \ 198 t=(t OP2 *(CAST_LONG *)((unsigned char *)CAST_S_table1+v))&0xffffffffL;\ 199 v=w>>C_1; \ 200 u&=C_M; \ 201 v&=C_M; \ 202 t=(t OP3 *(CAST_LONG *)((unsigned char *)CAST_S_table2+u)&0xffffffffL);\ 203 t=(t OP1 *(CAST_LONG *)((unsigned char *)CAST_S_table3+v)&0xffffffffL);\ 204 L^=(t&0xffffffff); \ 205 } 206#else 207#define E_CAST(n,key,L,R,OP1,OP2,OP3) \ 208 { \ 209 CAST_LONG a,b,c,d; \ 210 t=(key[n*2] OP1 R)&0xffffffff; \ 211 t=ROTL(t,(key[n*2+1])); \ 212 a=CAST_S_table0[(t>> 8)&0xff]; \ 213 b=CAST_S_table1[(t )&0xff]; \ 214 c=CAST_S_table2[(t>>24)&0xff]; \ 215 d=CAST_S_table3[(t>>16)&0xff]; \ 216 L^=(((((a OP2 b)&0xffffffffL) OP3 c)&0xffffffffL) OP1 d)&0xffffffffL; \ 217 } 218#endif 219 220extern const CAST_LONG CAST_S_table0[256]; 221extern const CAST_LONG CAST_S_table1[256]; 222extern const CAST_LONG CAST_S_table2[256]; 223extern const CAST_LONG CAST_S_table3[256]; 224extern const CAST_LONG CAST_S_table4[256]; 225extern const CAST_LONG CAST_S_table5[256]; 226extern const CAST_LONG CAST_S_table6[256]; 227extern const CAST_LONG CAST_S_table7[256]; 228