1 /* $OpenBSD: rc2_local.h,v 1.3 2024/03/29 05:03:48 jsing 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 #define C_RC2(n) \ 105 t=(x0+(x1& ~x3)+(x2&x3)+ *(p0++))&0xffff; \ 106 x0=(t<<1)|(t>>15); \ 107 t=(x1+(x2& ~x0)+(x3&x0)+ *(p0++))&0xffff; \ 108 x1=(t<<2)|(t>>14); \ 109 t=(x2+(x3& ~x1)+(x0&x1)+ *(p0++))&0xffff; \ 110 x2=(t<<3)|(t>>13); \ 111 t=(x3+(x0& ~x2)+(x1&x2)+ *(p0++))&0xffff; \ 112 x3=(t<<5)|(t>>11); 113