1 /* $OpenBSD: cast_lcl.h,v 1.11 2015/11/05 21:46:51 miod Exp $ */ 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 #undef c2l 60 #define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ 61 l|=((unsigned long)(*((c)++)))<< 8L, \ 62 l|=((unsigned long)(*((c)++)))<<16L, \ 63 l|=((unsigned long)(*((c)++)))<<24L) 64 65 /* NOTE - c is not incremented as per c2l */ 66 #undef c2ln 67 #define c2ln(c,l1,l2,n) { \ 68 c+=n; \ 69 l1=l2=0; \ 70 switch (n) { \ 71 case 8: l2 =((unsigned long)(*(--(c))))<<24L; \ 72 case 7: l2|=((unsigned long)(*(--(c))))<<16L; \ 73 case 6: l2|=((unsigned long)(*(--(c))))<< 8L; \ 74 case 5: l2|=((unsigned long)(*(--(c)))); \ 75 case 4: l1 =((unsigned long)(*(--(c))))<<24L; \ 76 case 3: l1|=((unsigned long)(*(--(c))))<<16L; \ 77 case 2: l1|=((unsigned long)(*(--(c))))<< 8L; \ 78 case 1: l1|=((unsigned long)(*(--(c)))); \ 79 } \ 80 } 81 82 #undef l2c 83 #define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ 84 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 85 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 86 *((c)++)=(unsigned char)(((l)>>24L)&0xff)) 87 88 /* NOTE - c is not incremented as per l2c */ 89 #undef l2cn 90 #define l2cn(l1,l2,c,n) { \ 91 c+=n; \ 92 switch (n) { \ 93 case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \ 94 case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \ 95 case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \ 96 case 5: *(--(c))=(unsigned char)(((l2) )&0xff); \ 97 case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \ 98 case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \ 99 case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \ 100 case 1: *(--(c))=(unsigned char)(((l1) )&0xff); \ 101 } \ 102 } 103 104 /* NOTE - c is not incremented as per n2l */ 105 #define n2ln(c,l1,l2,n) { \ 106 c+=n; \ 107 l1=l2=0; \ 108 switch (n) { \ 109 case 8: l2 =((unsigned long)(*(--(c)))) ; \ 110 case 7: l2|=((unsigned long)(*(--(c))))<< 8; \ 111 case 6: l2|=((unsigned long)(*(--(c))))<<16; \ 112 case 5: l2|=((unsigned long)(*(--(c))))<<24; \ 113 case 4: l1 =((unsigned long)(*(--(c)))) ; \ 114 case 3: l1|=((unsigned long)(*(--(c))))<< 8; \ 115 case 2: l1|=((unsigned long)(*(--(c))))<<16; \ 116 case 1: l1|=((unsigned long)(*(--(c))))<<24; \ 117 } \ 118 } 119 120 /* NOTE - c is not incremented as per l2n */ 121 #define l2nn(l1,l2,c,n) { \ 122 c+=n; \ 123 switch (n) { \ 124 case 8: *(--(c))=(unsigned char)(((l2) )&0xff); \ 125 case 7: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \ 126 case 6: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \ 127 case 5: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \ 128 case 4: *(--(c))=(unsigned char)(((l1) )&0xff); \ 129 case 3: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \ 130 case 2: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \ 131 case 1: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \ 132 } \ 133 } 134 135 #undef n2l 136 #define n2l(c,l) (l =((unsigned long)(*((c)++)))<<24L, \ 137 l|=((unsigned long)(*((c)++)))<<16L, \ 138 l|=((unsigned long)(*((c)++)))<< 8L, \ 139 l|=((unsigned long)(*((c)++)))) 140 141 #undef l2n 142 #define l2n(l,c) (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \ 143 *((c)++)=(unsigned char)(((l)>>16L)&0xff), \ 144 *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \ 145 *((c)++)=(unsigned char)(((l) )&0xff)) 146 147 /* only invoked with 0 <= n <= 31 */ 148 #define ROTL(a,n) ((((a)<<(n))&0xffffffffL)|((a)>>(32-(n)))) 149 150 #define C_M 0x3fc 151 #define C_0 22L 152 #define C_1 14L 153 #define C_2 6L 154 #define C_3 2L /* left shift */ 155 156 /* The rotate has an extra 16 added to it to help the x86 asm */ 157 #if defined(CAST_PTR) 158 #define E_CAST(n,key,L,R,OP1,OP2,OP3) \ 159 { \ 160 int i; \ 161 t=(key[n*2] OP1 R)&0xffffffffL; \ 162 i=key[n*2+1]; \ 163 t=ROTL(t,i); \ 164 L^= (((((*(CAST_LONG *)((unsigned char *) \ 165 CAST_S_table0+((t>>C_2)&C_M)) OP2 \ 166 *(CAST_LONG *)((unsigned char *) \ 167 CAST_S_table1+((t<<C_3)&C_M)))&0xffffffffL) OP3 \ 168 *(CAST_LONG *)((unsigned char *) \ 169 CAST_S_table2+((t>>C_0)&C_M)))&0xffffffffL) OP1 \ 170 *(CAST_LONG *)((unsigned char *) \ 171 CAST_S_table3+((t>>C_1)&C_M)))&0xffffffffL; \ 172 } 173 #elif defined(CAST_PTR2) 174 #define E_CAST(n,key,L,R,OP1,OP2,OP3) \ 175 { \ 176 int i; \ 177 CAST_LONG u,v,w; \ 178 w=(key[n*2] OP1 R)&0xffffffffL; \ 179 i=key[n*2+1]; \ 180 w=ROTL(w,i); \ 181 u=w>>C_2; \ 182 v=w<<C_3; \ 183 u&=C_M; \ 184 v&=C_M; \ 185 t= *(CAST_LONG *)((unsigned char *)CAST_S_table0+u); \ 186 u=w>>C_0; \ 187 t=(t OP2 *(CAST_LONG *)((unsigned char *)CAST_S_table1+v))&0xffffffffL;\ 188 v=w>>C_1; \ 189 u&=C_M; \ 190 v&=C_M; \ 191 t=(t OP3 *(CAST_LONG *)((unsigned char *)CAST_S_table2+u)&0xffffffffL);\ 192 t=(t OP1 *(CAST_LONG *)((unsigned char *)CAST_S_table3+v)&0xffffffffL);\ 193 L^=(t&0xffffffff); \ 194 } 195 #else 196 #define E_CAST(n,key,L,R,OP1,OP2,OP3) \ 197 { \ 198 CAST_LONG a,b,c,d; \ 199 t=(key[n*2] OP1 R)&0xffffffff; \ 200 t=ROTL(t,(key[n*2+1])); \ 201 a=CAST_S_table0[(t>> 8)&0xff]; \ 202 b=CAST_S_table1[(t )&0xff]; \ 203 c=CAST_S_table2[(t>>24)&0xff]; \ 204 d=CAST_S_table3[(t>>16)&0xff]; \ 205 L^=(((((a OP2 b)&0xffffffffL) OP3 c)&0xffffffffL) OP1 d)&0xffffffffL; \ 206 } 207 #endif 208 209 extern const CAST_LONG CAST_S_table0[256]; 210 extern const CAST_LONG CAST_S_table1[256]; 211 extern const CAST_LONG CAST_S_table2[256]; 212 extern const CAST_LONG CAST_S_table3[256]; 213 extern const CAST_LONG CAST_S_table4[256]; 214 extern const CAST_LONG CAST_S_table5[256]; 215 extern const CAST_LONG CAST_S_table6[256]; 216 extern const CAST_LONG CAST_S_table7[256]; 217