Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/crypto/blowfish/bf_locl.h
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1 /* $FreeBSD: releng/10.1/sys/crypto/blowfish/bf_locl.h 91671 2002-03-05 09:19:02Z ume $ */ 2 /* $KAME: bf_locl.h,v 1.6 2001/09/10 04:03:56 itojun Exp $ */ 3 4 /* crypto/bf/bf_local.h */ 5 /* Copyright (C) 1995-1997 Eric Young (eay@mincom.oz.au) 6 * All rights reserved. 7 * 8 * This package is an SSL implementation written 9 * by Eric Young (eay@mincom.oz.au). 10 * The implementation was written so as to conform with Netscapes SSL. 11 * 12 * This library is free for commercial and non-commercial use as long as 13 * the following conditions are aheared to. The following conditions 14 * apply to all code found in this distribution, be it the RC4, RSA, 15 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 16 * included with this distribution is covered by the same copyright terms 17 * except that the holder is Tim Hudson (tjh@mincom.oz.au). 18 * 19 * Copyright remains Eric Young's, and as such any Copyright notices in 20 * the code are not to be removed. 21 * If this package is used in a product, Eric Young should be given attribution 22 * as the author of the parts of the library used. 23 * This can be in the form of a textual message at program startup or 24 * in documentation (online or textual) provided with the package. 25 * 26 * Redistribution and use in source and binary forms, with or without 27 * modification, are permitted provided that the following conditions 28 * are met: 29 * 1. Redistributions of source code must retain the copyright 30 * notice, this list of conditions and the following disclaimer. 31 * 2. Redistributions in binary form must reproduce the above copyright 32 * notice, this list of conditions and the following disclaimer in the 33 * documentation and/or other materials provided with the distribution. 34 * 3. All advertising materials mentioning features or use of this software 35 * must display the following acknowledgement: 36 * "This product includes cryptographic software written by 37 * Eric Young (eay@mincom.oz.au)" 38 * The word 'cryptographic' can be left out if the rouines from the library 39 * being used are not cryptographic related :-). 40 * 4. If you include any Windows specific code (or a derivative thereof) from 41 * the apps directory (application code) you must include an acknowledgement: 42 * "This product includes software written by Tim Hudson (tjh@mincom.oz.au)" 43 * 44 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 47 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 * 56 * The licence and distribution terms for any publically available version or 57 * derivative of this code cannot be changed. i.e. this code cannot simply be 58 * copied and put under another distribution licence 59 * [including the GNU Public Licence.] 60 */ 61 /* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING 62 * 63 * Always modify bf_locl.org since bf_locl.h is automatically generated from 64 * it during SSLeay configuration. 65 * 66 * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING 67 */ 68 69 #undef c2l 70 #define c2l(c,l) (l =((BF_LONG)(*((c)++))) , \ 71 l|=((BF_LONG)(*((c)++)))<< 8L, \ 72 l|=((BF_LONG)(*((c)++)))<<16L, \ 73 l|=((BF_LONG)(*((c)++)))<<24L) 74 75 /* NOTE - c is not incremented as per c2l */ 76 #undef c2ln 77 #define c2ln(c,l1,l2,n) { \ 78 c+=n; \ 79 l1=l2=0; \ 80 switch (n) { \ 81 case 8: l2 =((BF_LONG)(*(--(c))))<<24L; \ 82 case 7: l2|=((BF_LONG)(*(--(c))))<<16L; \ 83 case 6: l2|=((BF_LONG)(*(--(c))))<< 8L; \ 84 case 5: l2|=((BF_LONG)(*(--(c)))); \ 85 case 4: l1 =((BF_LONG)(*(--(c))))<<24L; \ 86 case 3: l1|=((BF_LONG)(*(--(c))))<<16L; \ 87 case 2: l1|=((BF_LONG)(*(--(c))))<< 8L; \ 88 case 1: l1|=((BF_LONG)(*(--(c)))); \ 89 } \ 90 } 91 92 #undef l2c 93 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 94 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 95 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 96 *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 97 98 /* NOTE - c is not incremented as per l2c */ 99 #undef l2cn 100 #define l2cn(l1,l2,c,n) { \ 101 c+=n; \ 102 switch (n) { \ 103 case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ 104 case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ 105 case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ 106 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 107 case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ 108 case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ 109 case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ 110 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 111 } \ 112 } 113 114 /* NOTE - c is not incremented as per n2l */ 115 #define n2ln(c,l1,l2,n) { \ 116 c+=n; \ 117 l1=l2=0; \ 118 switch (n) { \ 119 case 8: l2 =((BF_LONG)(*(--(c)))) ; \ 120 case 7: l2|=((BF_LONG)(*(--(c))))<< 8; \ 121 case 6: l2|=((BF_LONG)(*(--(c))))<<16; \ 122 case 5: l2|=((BF_LONG)(*(--(c))))<<24; \ 123 case 4: l1 =((BF_LONG)(*(--(c)))) ; \ 124 case 3: l1|=((BF_LONG)(*(--(c))))<< 8; \ 125 case 2: l1|=((BF_LONG)(*(--(c))))<<16; \ 126 case 1: l1|=((BF_LONG)(*(--(c))))<<24; \ 127 } \ 128 } 129 130 /* NOTE - c is not incremented as per l2n */ 131 #define l2nn(l1,l2,c,n) { \ 132 c+=n; \ 133 switch (n) { \ 134 case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \ 135 case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 136 case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 137 case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 138 case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \ 139 case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 140 case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 141 case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 142 } \ 143 } 144 145 #undef n2l 146 #define n2l(c,l) (l =((BF_LONG)(*((c)++)))<<24L, \ 147 l|=((BF_LONG)(*((c)++)))<<16L, \ 148 l|=((BF_LONG)(*((c)++)))<< 8L, \ 149 l|=((BF_LONG)(*((c)++)))) 150 151 #undef l2n 152 #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ 153 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 154 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 155 *((c)++)=(unsigned char)(((l) )&0xff)) 156 157 /* This is actually a big endian algorithm, the most significate byte 158 * is used to lookup array 0 */ 159 160 /* use BF_PTR2 for intel boxes, 161 * BF_PTR for sparc and MIPS/SGI 162 * use nothing for Alpha and HP. 163 */ 164 #undef BF_PTR 165 #undef BF_PTR2 166 #ifdef __i386__ 167 #define BF_PTR2 168 #else 169 #ifdef __mips__ 170 #define BF_PTR 171 #endif 172 #endif 173 174 #define BF_M 0x3fc 175 #define BF_0 22L 176 #define BF_1 14L 177 #define BF_2 6L 178 #define BF_3 2L /* left shift */ 179 180 #if defined(BF_PTR2) 181 182 /* This is basically a special pentium verson */ 183 #define BF_ENC(LL,R,S,P) \ 184 { \ 185 BF_LONG t,u,v; \ 186 u=R>>BF_0; \ 187 v=R>>BF_1; \ 188 u&=BF_M; \ 189 v&=BF_M; \ 190 t= *(BF_LONG *)((unsigned char *)&(S[ 0])+u); \ 191 u=R>>BF_2; \ 192 t+= *(BF_LONG *)((unsigned char *)&(S[256])+v); \ 193 v=R<<BF_3; \ 194 u&=BF_M; \ 195 v&=BF_M; \ 196 t^= *(BF_LONG *)((unsigned char *)&(S[512])+u); \ 197 LL^=P; \ 198 t+= *(BF_LONG *)((unsigned char *)&(S[768])+v); \ 199 LL^=t; \ 200 } 201 202 #elif defined(BF_PTR) 203 204 /* This is normally very good */ 205 206 #define BF_ENC(LL,R,S,P) \ 207 LL^=P; \ 208 LL^= (((*(BF_LONG *)((unsigned char *)&(S[ 0])+((R>>BF_0)&BF_M))+ \ 209 *(BF_LONG *)((unsigned char *)&(S[256])+((R>>BF_1)&BF_M)))^ \ 210 *(BF_LONG *)((unsigned char *)&(S[512])+((R>>BF_2)&BF_M)))+ \ 211 *(BF_LONG *)((unsigned char *)&(S[768])+((R<<BF_3)&BF_M))); 212 #else 213 214 /* This will always work, even on 64 bit machines and strangly enough, 215 * on the Alpha it is faster than the pointer versions (both 32 and 64 216 * versions of BF_LONG) */ 217 218 #define BF_ENC(LL,R,S,P) \ 219 LL^=P; \ 220 LL^=((( S[ (R>>24L) ] + \ 221 S[0x0100+((R>>16L)&0xff)])^ \ 222 S[0x0200+((R>> 8L)&0xff)])+ \ 223 S[0x0300+((R )&0xff)])&0xffffffff; 224 #endif
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