Early Roguelike Collection: srogue/xcrypt.c annotate

annotate srogue/xcrypt.c @ 201:6fb21004a981

Fix some preprocessor directives. Include process.h in the right place, and use the correct definition of PATH_MAX, when compiling on Windows.

author	John "Elwin" Edwards
date	Wed, 12 Aug 2015 16:56:19 -0400
parents	e6c8652473fe
children

rev	line source
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	1 /*
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	2 * FreeSec: libcrypt
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	3 *
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	4 * Copyright (C) 1994 David Burren
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	5 * All rights reserved.
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	6 *
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	7 * Redistribution and use in source and binary forms, with or without
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	8 * modification, are permitted provided that the following conditions
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	9 * are met:
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	10 * 1. Redistributions of source code must retain the above copyright
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	11 * notice, this list of conditions and the following disclaimer.
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	12 * 2. Redistributions in binary form must reproduce the above copyright
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	13 * notice, this list of conditions and the following disclaimer in the
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	14 * documentation and/or other materials provided with the distribution.
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	15 * 3. Neither the name(s) of the author(s) nor the names of other contributors
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	16 * may be used to endorse or promote products derived from this software
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	17 * without specific prior written permission.
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	18 *
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	29 * SUCH DAMAGE.
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	30 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	31 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	32 * This is an original implementation of the DES and the crypt(3) interfaces
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	33 * by David Burren <davidb@werj.com.au>.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	34 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	35 * An excellent reference on the underlying algorithm (and related
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	36 * algorithms) is:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	37 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	38 * B. Schneier, Applied Cryptography: protocols, algorithms,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	39 * and source code in C, John Wiley & Sons, 1994.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	40 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	41 * Note that in that book's description of DES the lookups for the initial,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	42 * pbox, and final permutations are inverted (this has been brought to the
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	43 * attention of the author). A list of errata for this book has been
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	44 * posted to the sci.crypt newsgroup by the author and is available for FTP.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	45 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	46 * NOTE:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	47 * This file has a static version of des_setkey() so that crypt.o exports
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	48 * only the crypt() interface. This is required to make binaries linked
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	49 * against crypt.o exportable or re-exportable from the USA.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	50 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	51
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	52 #include <sys/types.h>
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	53 #include <string.h>
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	54
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	55 static unsigned int md_endian = 0x01020304;
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	56
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	57 unsigned int
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	58 xntohl(unsigned int x)
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	59 {
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	60 if ( ((char )&md_endian) == 0x01 )
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	61 return(x);
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	62 else
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	63 return( ((x & 0x000000ffU) << 24) \|
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	64 ((x & 0x0000ff00U) << 8) \|
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	65 ((x & 0x00ff0000U) >> 8) \|
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	66 ((x & 0xff000000U) >> 24) );
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	67 }
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	68
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	69 unsigned int
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	70 xhtonl(unsigned int x)
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	71 {
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	72 if ( ((char )&md_endian) == 0x01 )
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	73 return(x);
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	74 else
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	75 return( ((x & 0x000000ffU) << 24) \|
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	76 ((x & 0x0000ff00U) << 8) \|
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	77 ((x & 0x00ff0000U) >> 8) \|
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	78 ((x & 0xff000000U) >> 24) );
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	79 }
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	80
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	81 #define _PASSWORD_EFMT1 '_'
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	82
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	83 static unsigned char IP[64] = {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	84 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	85 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	86 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	87 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	88 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	89
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	90 static unsigned char inv_key_perm[64];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	91 static unsigned char key_perm[56] = {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	92 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	93 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	94 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	95 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	96 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	97
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	98 static unsigned char key_shifts[16] = {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	99 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	100 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	101
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	102 static unsigned char inv_comp_perm[56];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	103 static unsigned char comp_perm[48] = {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	104 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	105 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	106 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	107 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	108 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	109
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	110 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	111 * No E box is used, as it's replaced by some ANDs, shifts, and ORs.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	112 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	113
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	114 static unsigned char u_sbox[8][64];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	115 static unsigned char sbox[8][64] = {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	116 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	117 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	118 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	119 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	120 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	121 },
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	122 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	123 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	124 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	125 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	126 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	127 },
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	128 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	129 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	130 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	131 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	132 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	133 },
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	134 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	135 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	136 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	137 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	138 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	139 },
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	140 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	141 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	142 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	143 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	144 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	145 },
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	146 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	147 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	148 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	149 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	150 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	151 },
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	152 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	153 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	154 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	155 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	156 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	157 },
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	158 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	159 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	160 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	161 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	162 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	163 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	164 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	165
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	166 static unsigned char un_pbox[32];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	167 static unsigned char pbox[32] = {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	168 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	169 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	170 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	171
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	172 static unsigned int bits32[32] =
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	173 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	174 0x80000000, 0x40000000, 0x20000000, 0x10000000,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	175 0x08000000, 0x04000000, 0x02000000, 0x01000000,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	176 0x00800000, 0x00400000, 0x00200000, 0x00100000,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	177 0x00080000, 0x00040000, 0x00020000, 0x00010000,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	178 0x00008000, 0x00004000, 0x00002000, 0x00001000,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	179 0x00000800, 0x00000400, 0x00000200, 0x00000100,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	180 0x00000080, 0x00000040, 0x00000020, 0x00000010,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	181 0x00000008, 0x00000004, 0x00000002, 0x00000001
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	182 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	183
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	184 static unsigned char bits8[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	185
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	186 static unsigned int saltbits;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	187 static int old_salt;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	188 static unsigned int bits28, bits24;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	189 static unsigned char init_perm[64], final_perm[64];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	190 static unsigned int en_keysl[16], en_keysr[16];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	191 static unsigned int de_keysl[16], de_keysr[16];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	192 static int des_initialised = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	193 static unsigned char m_sbox[4][4096];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	194 static unsigned int psbox[4][256];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	195 static unsigned int ip_maskl[8][256], ip_maskr[8][256];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	196 static unsigned int fp_maskl[8][256], fp_maskr[8][256];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	197 static unsigned int key_perm_maskl[8][128], key_perm_maskr[8][128];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	198 static unsigned int comp_maskl[8][128], comp_maskr[8][128];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	199 static unsigned int old_rawkey0, old_rawkey1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	200
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	201 static unsigned char ascii64[] =
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	202 "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	203 /* 0000000000111111111122222222223333333333444444444455555555556666 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	204 /* 0123456789012345678901234567890123456789012345678901234567890123 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	205
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	206 static __inline int
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	207 ascii_to_bin(int ch)
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	208 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	209 if (ch > 'z')
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	210 return(0);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	211 if (ch >= 'a')
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	212 return(ch - 'a' + 38);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	213 if (ch > 'Z')
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	214 return(0);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	215 if (ch >= 'A')
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	216 return(ch - 'A' + 12);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	217 if (ch > '9')
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	218 return(0);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	219 if (ch >= '.')
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	220 return(ch - '.');
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	221 return(0);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	222 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	223
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	224 static void
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	225 des_init(void)
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	226 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	227 int i, j, b, k, inbit, obit;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	228 unsigned int p, il, ir, fl, *fr;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	229
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	230 old_rawkey0 = old_rawkey1 = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	231 saltbits = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	232 old_salt = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	233 bits24 = (bits28 = bits32 + 4) + 4;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	234
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	235 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	236 * Invert the S-boxes, reordering the input bits.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	237 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	238 for (i = 0; i < 8; i++)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	239 for (j = 0; j < 64; j++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	240 b = (j & 0x20) \| ((j & 1) << 4) \| ((j >> 1) & 0xf);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	241 u_sbox[i][j] = sbox[i][b];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	242 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	243
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	244 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	245 * Convert the inverted S-boxes into 4 arrays of 8 bits.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	246 * Each will handle 12 bits of the S-box input.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	247 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	248 for (b = 0; b < 4; b++)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	249 for (i = 0; i < 64; i++)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	250 for (j = 0; j < 64; j++)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	251 m_sbox[b][(i << 6) \| j] =
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	252 (u_sbox[(b << 1)][i] << 4) \|
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	253 u_sbox[(b << 1) + 1][j];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	254
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	255 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	256 * Set up the initial & final permutations into a useful form, and
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	257 * initialise the inverted key permutation.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	258 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	259 for (i = 0; i < 64; i++) {
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	260 init_perm[final_perm[i] = IP[i] - 1] = (unsigned char) i;
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	261 inv_key_perm[i] = 255;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	262 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	263
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	264 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	265 * Invert the key permutation and initialise the inverted key
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	266 * compression permutation.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	267 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	268 for (i = 0; i < 56; i++) {
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	269 inv_key_perm[key_perm[i] - 1] = (unsigned char) i;
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	270 inv_comp_perm[i] = 255;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	271 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	272
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	273 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	274 * Invert the key compression permutation.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	275 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	276 for (i = 0; i < 48; i++) {
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	277 inv_comp_perm[comp_perm[i] - 1] = (unsigned char) i;
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	278 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	279
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	280 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	281 * Set up the OR-mask arrays for the initial and final permutations,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	282 * and for the key initial and compression permutations.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	283 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	284 for (k = 0; k < 8; k++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	285 for (i = 0; i < 256; i++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	286 *(il = &ip_maskl[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	287 *(ir = &ip_maskr[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	288 *(fl = &fp_maskl[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	289 *(fr = &fp_maskr[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	290 for (j = 0; j < 8; j++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	291 inbit = 8 * k + j;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	292 if (i & bits8[j]) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	293 if ((obit = init_perm[inbit]) < 32)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	294 *il \|= bits32[obit];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	295 else
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	296 *ir \|= bits32[obit-32];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	297 if ((obit = final_perm[inbit]) < 32)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	298 *fl \|= bits32[obit];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	299 else
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	300 *fr \|= bits32[obit - 32];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	301 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	302 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	303 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	304 for (i = 0; i < 128; i++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	305 *(il = &key_perm_maskl[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	306 *(ir = &key_perm_maskr[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	307 for (j = 0; j < 7; j++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	308 inbit = 8 * k + j;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	309 if (i & bits8[j + 1]) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	310 if ((obit = inv_key_perm[inbit]) == 255)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	311 continue;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	312 if (obit < 28)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	313 *il \|= bits28[obit];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	314 else
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	315 *ir \|= bits28[obit - 28];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	316 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	317 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	318 *(il = &comp_maskl[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	319 *(ir = &comp_maskr[k][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	320 for (j = 0; j < 7; j++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	321 inbit = 7 * k + j;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	322 if (i & bits8[j + 1]) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	323 if ((obit=inv_comp_perm[inbit]) == 255)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	324 continue;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	325 if (obit < 24)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	326 *il \|= bits24[obit];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	327 else
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	328 *ir \|= bits24[obit - 24];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	329 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	330 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	331 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	332 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	333
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	334 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	335 * Invert the P-box permutation, and convert into OR-masks for
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	336 * handling the output of the S-box arrays setup above.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	337 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	338 for (i = 0; i < 32; i++)
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	339 un_pbox[pbox[i] - 1] = (unsigned char) i;
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	340
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	341 for (b = 0; b < 4; b++)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	342 for (i = 0; i < 256; i++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	343 *(p = &psbox[b][i]) = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	344 for (j = 0; j < 8; j++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	345 if (i & bits8[j])
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	346 p \|= bits32[un_pbox[8 b + j]];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	347 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	348 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	349
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	350 des_initialised = 1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	351 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	352
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	353 static void
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	354 setup_salt(int salt)
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	355 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	356 unsigned int obit, saltbit;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	357 int i;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	358
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	359 if (salt == old_salt)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	360 return;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	361 old_salt = salt;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	362
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	363 saltbits = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	364 saltbit = 1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	365 obit = 0x800000;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	366 for (i = 0; i < 24; i++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	367 if (salt & saltbit)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	368 saltbits \|= obit;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	369 saltbit <<= 1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	370 obit >>= 1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	371 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	372 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	373
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	374 static int
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	375 des_setkey(const char *key)
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	376 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	377 unsigned int k0, k1, rawkey0, rawkey1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	378 int shifts, round;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	379
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	380 if (!des_initialised)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	381 des_init();
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	382
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	383 rawkey0 = xntohl((unsigned int ) key);
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	384 rawkey1 = xntohl((unsigned int ) (key + 4));
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	385
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	386 if ((rawkey0 \| rawkey1)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	387 && rawkey0 == old_rawkey0
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	388 && rawkey1 == old_rawkey1) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	389 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	390 * Already setup for this key.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	391 * This optimisation fails on a zero key (which is weak and
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	392 * has bad parity anyway) in order to simplify the starting
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	393 * conditions.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	394 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	395 return(0);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	396 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	397 old_rawkey0 = rawkey0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	398 old_rawkey1 = rawkey1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	399
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	400 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	401 * Do key permutation and split into two 28-bit subkeys.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	402 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	403 k0 = key_perm_maskl[0][rawkey0 >> 25]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	404 \| key_perm_maskl[1][(rawkey0 >> 17) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	405 \| key_perm_maskl[2][(rawkey0 >> 9) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	406 \| key_perm_maskl[3][(rawkey0 >> 1) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	407 \| key_perm_maskl[4][rawkey1 >> 25]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	408 \| key_perm_maskl[5][(rawkey1 >> 17) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	409 \| key_perm_maskl[6][(rawkey1 >> 9) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	410 \| key_perm_maskl[7][(rawkey1 >> 1) & 0x7f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	411 k1 = key_perm_maskr[0][rawkey0 >> 25]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	412 \| key_perm_maskr[1][(rawkey0 >> 17) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	413 \| key_perm_maskr[2][(rawkey0 >> 9) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	414 \| key_perm_maskr[3][(rawkey0 >> 1) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	415 \| key_perm_maskr[4][rawkey1 >> 25]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	416 \| key_perm_maskr[5][(rawkey1 >> 17) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	417 \| key_perm_maskr[6][(rawkey1 >> 9) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	418 \| key_perm_maskr[7][(rawkey1 >> 1) & 0x7f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	419 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	420 * Rotate subkeys and do compression permutation.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	421 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	422 shifts = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	423 for (round = 0; round < 16; round++) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	424 unsigned int t0, t1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	425
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	426 shifts += key_shifts[round];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	427
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	428 t0 = (k0 << shifts) \| (k0 >> (28 - shifts));
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	429 t1 = (k1 << shifts) \| (k1 >> (28 - shifts));
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	430
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	431 de_keysl[15 - round] =
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	432 en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	433 \| comp_maskl[1][(t0 >> 14) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	434 \| comp_maskl[2][(t0 >> 7) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	435 \| comp_maskl[3][t0 & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	436 \| comp_maskl[4][(t1 >> 21) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	437 \| comp_maskl[5][(t1 >> 14) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	438 \| comp_maskl[6][(t1 >> 7) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	439 \| comp_maskl[7][t1 & 0x7f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	440
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	441 de_keysr[15 - round] =
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	442 en_keysr[round] = comp_maskr[0][(t0 >> 21) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	443 \| comp_maskr[1][(t0 >> 14) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	444 \| comp_maskr[2][(t0 >> 7) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	445 \| comp_maskr[3][t0 & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	446 \| comp_maskr[4][(t1 >> 21) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	447 \| comp_maskr[5][(t1 >> 14) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	448 \| comp_maskr[6][(t1 >> 7) & 0x7f]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	449 \| comp_maskr[7][t1 & 0x7f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	450 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	451 return(0);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	452 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	453
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	454 static int
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	455 do_des(unsigned int l_in, unsigned int r_in, unsigned int *l_out,
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	456 unsigned int *r_out, int count)
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	457 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	458 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	459 * l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	460 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	461 unsigned int l, r, kl, kr, kl1, kr1;
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	462 unsigned int f = 0, r48l, r48r;
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	463 int round;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	464
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	465 if (count == 0) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	466 return(1);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	467 } else if (count > 0) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	468 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	469 * Encrypting
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	470 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	471 kl1 = en_keysl;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	472 kr1 = en_keysr;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	473 } else {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	474 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	475 * Decrypting
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	476 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	477 count = -count;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	478 kl1 = de_keysl;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	479 kr1 = de_keysr;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	480 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	481
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	482 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	483 * Do initial permutation (IP).
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	484 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	485 l = ip_maskl[0][l_in >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	486 \| ip_maskl[1][(l_in >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	487 \| ip_maskl[2][(l_in >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	488 \| ip_maskl[3][l_in & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	489 \| ip_maskl[4][r_in >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	490 \| ip_maskl[5][(r_in >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	491 \| ip_maskl[6][(r_in >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	492 \| ip_maskl[7][r_in & 0xff];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	493 r = ip_maskr[0][l_in >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	494 \| ip_maskr[1][(l_in >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	495 \| ip_maskr[2][(l_in >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	496 \| ip_maskr[3][l_in & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	497 \| ip_maskr[4][r_in >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	498 \| ip_maskr[5][(r_in >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	499 \| ip_maskr[6][(r_in >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	500 \| ip_maskr[7][r_in & 0xff];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	501
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	502 while (count--) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	503 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	504 * Do each round.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	505 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	506 kl = kl1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	507 kr = kr1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	508 round = 16;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	509 while (round--) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	510 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	511 * Expand R to 48 bits (simulate the E-box).
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	512 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	513 r48l = ((r & 0x00000001) << 23)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	514 \| ((r & 0xf8000000) >> 9)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	515 \| ((r & 0x1f800000) >> 11)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	516 \| ((r & 0x01f80000) >> 13)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	517 \| ((r & 0x001f8000) >> 15);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	518
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	519 r48r = ((r & 0x0001f800) << 7)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	520 \| ((r & 0x00001f80) << 5)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	521 \| ((r & 0x000001f8) << 3)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	522 \| ((r & 0x0000001f) << 1)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	523 \| ((r & 0x80000000) >> 31);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	524 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	525 * Do salting for crypt() and friends, and
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	526 * XOR with the permuted key.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	527 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	528 f = (r48l ^ r48r) & saltbits;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	529 r48l ^= f ^ *kl++;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	530 r48r ^= f ^ *kr++;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	531 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	532 * Do sbox lookups (which shrink it back to 32 bits)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	533 * and do the pbox permutation at the same time.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	534 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	535 f = psbox[0][m_sbox[0][r48l >> 12]]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	536 \| psbox[1][m_sbox[1][r48l & 0xfff]]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	537 \| psbox[2][m_sbox[2][r48r >> 12]]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	538 \| psbox[3][m_sbox[3][r48r & 0xfff]];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	539 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	540 * Now that we've permuted things, complete f().
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	541 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	542 f ^= l;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	543 l = r;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	544 r = f;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	545 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	546 r = l;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	547 l = f;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	548 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	549 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	550 * Do final permutation (inverse of IP).
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	551 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	552 *l_out = fp_maskl[0][l >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	553 \| fp_maskl[1][(l >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	554 \| fp_maskl[2][(l >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	555 \| fp_maskl[3][l & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	556 \| fp_maskl[4][r >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	557 \| fp_maskl[5][(r >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	558 \| fp_maskl[6][(r >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	559 \| fp_maskl[7][r & 0xff];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	560 *r_out = fp_maskr[0][l >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	561 \| fp_maskr[1][(l >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	562 \| fp_maskr[2][(l >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	563 \| fp_maskr[3][l & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	564 \| fp_maskr[4][r >> 24]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	565 \| fp_maskr[5][(r >> 16) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	566 \| fp_maskr[6][(r >> 8) & 0xff]
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	567 \| fp_maskr[7][r & 0xff];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	568 return(0);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	569 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	570
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	571 static int
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	572 des_cipher(const char in, char out, int salt, int count)
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	573 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	574 unsigned int l_out, r_out, rawl, rawr;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	575 unsigned int x[2];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	576 int retval;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	577
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	578 if (!des_initialised)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	579 des_init();
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	580
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	581 setup_salt(salt);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	582
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	583 memcpy(x, in, sizeof x);
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	584 rawl = xntohl(x[0]);
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	585 rawr = xntohl(x[1]);
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	586 retval = do_des(rawl, rawr, &l_out, &r_out, count);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	587
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	588 x[0] = xhtonl(l_out);
e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	589 x[1] = xhtonl(r_out);
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	590 memcpy(out, x, sizeof x);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	591 return(retval);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	592 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	593
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	594 char *
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	595 xcrypt(const char key, const char setting)
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	596 {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	597 int i;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	598 unsigned int count, salt, l, r0, r1, keybuf[2];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	599 unsigned char p, q;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	600 static unsigned char output[21];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	601
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	602 if (!des_initialised)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	603 des_init();
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	604
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	605 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	606 * Copy the key, shifting each character up by one bit
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	607 * and padding with zeros.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	608 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	609 q = (unsigned char *) keybuf;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	610 while ((q - (unsigned char *) keybuf) < sizeof(keybuf)) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	611 if ((q++ = key << 1))
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	612 key++;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	613 }
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	614 if (des_setkey((const char *) keybuf))
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	615 return(NULL);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	616
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	617 if (*setting == _PASSWORD_EFMT1) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	618 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	619 * "new"-style:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	620 * setting - underscore, 4 bytes of count, 4 bytes of salt
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	621 * key - unlimited characters
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	622 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	623 for (i = 1, count = 0; i < 5; i++)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	624 count \|= ascii_to_bin(setting[i]) << (i - 1) * 6;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	625
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	626 for (i = 5, salt = 0; i < 9; i++)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	627 salt \|= ascii_to_bin(setting[i]) << (i - 5) * 6;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	628
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	629 while (*key) {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	630 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	631 * Encrypt the key with itself.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	632 */
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	633 if (des_cipher((const char)keybuf, (char)keybuf, 0, 1))
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	634 return(NULL);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	635 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	636 * And XOR with the next 8 characters of the key.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	637 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	638 q = (unsigned char *) keybuf;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	639 while (((q - (unsigned char *) keybuf) < sizeof(keybuf)) &&
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	640 *key)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	641 q++ ^= key++ << 1;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	642
121 e6c8652473fe srogue: more compatibility improvements. John "Elwin" Edwards parents: 119 diff changeset	643 if (des_setkey((const char *) keybuf))
36 2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	644 return(NULL);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	645 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	646 strncpy((char *)output, setting, 9);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	647
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	648 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	649 * Double check that we weren't given a short setting.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	650 * If we were, the above code will probably have created
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	651 * wierd values for count and salt, but we don't really care.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	652 * Just make sure the output string doesn't have an extra
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	653 * NUL in it.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	654 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	655 output[9] = '\0';
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	656 p = output + strlen((const char *)output);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	657 } else {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	658 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	659 * "old"-style:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	660 * setting - 2 bytes of salt
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	661 * key - up to 8 characters
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	662 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	663 count = 25;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	664
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	665 salt = (ascii_to_bin(setting[1]) << 6)
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	666 \| ascii_to_bin(setting[0]);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	667
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	668 output[0] = setting[0];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	669 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	670 * If the encrypted password that the salt was extracted from
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	671 * is only 1 character long, the salt will be corrupted. We
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	672 * need to ensure that the output string doesn't have an extra
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	673 * NUL in it!
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	674 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	675 output[1] = setting[1] ? setting[1] : output[0];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	676
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	677 p = output + 2;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	678 }
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	679 setup_salt(salt);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	680 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	681 * Do it.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	682 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	683 if (do_des(0, 0, &r0, &r1, count))
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	684 return(NULL);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	685 /*
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	686 * Now encode the result...
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	687 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	688 l = (r0 >> 8);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	689 *p++ = ascii64[(l >> 18) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	690 *p++ = ascii64[(l >> 12) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	691 *p++ = ascii64[(l >> 6) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	692 *p++ = ascii64[l & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	693
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	694 l = (r0 << 16) \| ((r1 >> 16) & 0xffff);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	695 *p++ = ascii64[(l >> 18) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	696 *p++ = ascii64[(l >> 12) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	697 *p++ = ascii64[(l >> 6) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	698 *p++ = ascii64[l & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	699
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	700 l = r1 << 2;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	701 *p++ = ascii64[(l >> 12) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	702 *p++ = ascii64[(l >> 6) & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	703 *p++ = ascii64[l & 0x3f];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	704 *p = 0;
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	705
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	706 return((char *)output);
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	707 }

Mercurial > hg > early-roguelike

annotate srogue/xcrypt.c @ 201:6fb21004a981