Early Roguelike Collection: arogue5/xcrypt.c annotate

annotate arogue5/xcrypt.c @ 304:e52a8a7ad4c5

Fix many compiler warnings. There should only be two changes in behavior: arogue7/fight.c, arogue7/fight.c: a to-hit bonus is now correctly applied to characters who are not monks instead of monks who are not empty-handed. urogue/fight.c: fixed an interaction with the "debug" macro that could cause the wrong message to be displayed.

author	John "Elwin" Edwards
date	Wed, 14 Apr 2021 18:55:33 -0400
parents	56e748983fa8
children

rev	line source
63 0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	1 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	2 * FreeSec: libcrypt
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	3 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	4 * Copyright (C) 1994 David Burren
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	5 * All rights reserved.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	6 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	7 * Redistribution and use in source and binary forms, with or without
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	8 * modification, are permitted provided that the following conditions
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	9 * are met:
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	10 * 1. Redistributions of source code must retain the above copyright
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	11 * notice, this list of conditions and the following disclaimer.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	12 * 2. Redistributions in binary form must reproduce the above copyright
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	13 * notice, this list of conditions and the following disclaimer in the
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	14 * documentation and/or other materials provided with the distribution.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	15 * 3. Neither the name(s) of the author(s) nor the names of other contributors
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	16 * may be used to endorse or promote products derived from this software
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	17 * without specific prior written permission.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	18 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	29 * SUCH DAMAGE.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	30 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	31 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	32 * This is an original implementation of the DES and the crypt(3) interfaces
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	33 * by David Burren <davidb@werj.com.au>.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	34 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	35 * An excellent reference on the underlying algorithm (and related
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	36 * algorithms) is:
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	37 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	38 * B. Schneier, Applied Cryptography: protocols, algorithms,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	39 * and source code in C, John Wiley & Sons, 1994.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	40 *
0ed67132cf10 Import Advanced Rogue 5.8 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,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	42 * pbox, and final permutations are inverted (this has been brought to the
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	43 * attention of the author). A list of errata for this book has been
0ed67132cf10 Import Advanced Rogue 5.8 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.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	45 *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	46 * NOTE:
0ed67132cf10 Import Advanced Rogue 5.8 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
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	48 * only the crypt() interface. This is required to make binaries linked
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	49 * against crypt.o exportable or re-exportable from the USA.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	50 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	51
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	52 #include <sys/types.h>
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	53 #include <string.h>
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	54
218 56e748983fa8 Advanced Rogue 5: convert to ANSI function declarations. John "Elwin" Edwards parents: 63 diff changeset	55 unsigned long int md_htonl(unsigned long int x);
56e748983fa8 Advanced Rogue 5: convert to ANSI function declarations. John "Elwin" Edwards parents: 63 diff changeset	56 unsigned long int md_ntohl(unsigned long int x);
56e748983fa8 Advanced Rogue 5: convert to ANSI function declarations. John "Elwin" Edwards parents: 63 diff changeset	57
63 0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	58 #ifdef DEBUG
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	59 # include <stdio.h>
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	60 #endif
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	61 #define _PASSWORD_EFMT1 '_'
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	62
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	63 static unsigned char IP[64] = {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	64 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	65 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	66 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	67 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	68 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	69
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	70 static unsigned char inv_key_perm[64];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	71 static unsigned char key_perm[56] = {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	72 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	73 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	74 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	75 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	76 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	77
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	78 static unsigned char key_shifts[16] = {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	79 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	80 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	81
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	82 static unsigned char inv_comp_perm[56];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	83 static unsigned char comp_perm[48] = {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	84 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	85 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	86 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	87 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	88 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	89
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	90 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	91 * No E box is used, as it's replaced by some ANDs, shifts, and ORs.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	92 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	93
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	94 static unsigned char u_sbox[8][64];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	95 static unsigned char sbox[8][64] = {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	96 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	97 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	98 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	99 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	100 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	101 },
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	102 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	103 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	104 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	105 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	106 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	107 },
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	108 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	109 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	110 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	111 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	112 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	113 },
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	114 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	115 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	116 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	117 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	118 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	119 },
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	120 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	121 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	122 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	123 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	124 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	125 },
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	126 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	127 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	128 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	129 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	130 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	131 },
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	132 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	133 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	134 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	135 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	136 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	137 },
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	138 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	139 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	140 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	141 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	142 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	143 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	144 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	145
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	146 static unsigned char un_pbox[32];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	147 static unsigned char pbox[32] = {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	148 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	149 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	150 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	151
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	152 static unsigned int bits32[32] =
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	153 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	154 0x80000000, 0x40000000, 0x20000000, 0x10000000,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	155 0x08000000, 0x04000000, 0x02000000, 0x01000000,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	156 0x00800000, 0x00400000, 0x00200000, 0x00100000,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	157 0x00080000, 0x00040000, 0x00020000, 0x00010000,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	158 0x00008000, 0x00004000, 0x00002000, 0x00001000,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	159 0x00000800, 0x00000400, 0x00000200, 0x00000100,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	160 0x00000080, 0x00000040, 0x00000020, 0x00000010,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	161 0x00000008, 0x00000004, 0x00000002, 0x00000001
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	162 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	163
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	164 static unsigned char bits8[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 };
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	165
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	166 static unsigned int saltbits;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	167 static int old_salt;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	168 static unsigned int bits28, bits24;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	169 static unsigned char init_perm[64], final_perm[64];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	170 static unsigned int en_keysl[16], en_keysr[16];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	171 static unsigned int de_keysl[16], de_keysr[16];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	172 static int des_initialised = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	173 static unsigned char m_sbox[4][4096];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	174 static unsigned int psbox[4][256];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	175 static unsigned int ip_maskl[8][256], ip_maskr[8][256];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	176 static unsigned int fp_maskl[8][256], fp_maskr[8][256];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	177 static unsigned int key_perm_maskl[8][128], key_perm_maskr[8][128];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	178 static unsigned int comp_maskl[8][128], comp_maskr[8][128];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	179 static unsigned int old_rawkey0, old_rawkey1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	180
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	181 static unsigned char ascii64[] =
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	182 "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	183 /* 0000000000111111111122222222223333333333444444444455555555556666 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	184 /* 0123456789012345678901234567890123456789012345678901234567890123 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	185
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	186 static __inline int
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	187 ascii_to_bin(ch)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	188 char ch;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	189 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	190 if (ch > 'z')
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	191 return(0);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	192 if (ch >= 'a')
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	193 return(ch - 'a' + 38);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	194 if (ch > 'Z')
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	195 return(0);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	196 if (ch >= 'A')
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	197 return(ch - 'A' + 12);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	198 if (ch > '9')
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	199 return(0);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	200 if (ch >= '.')
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	201 return(ch - '.');
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	202 return(0);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	203 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	204
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	205 static void
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	206 des_init()
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	207 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	208 int i, j, b, k, inbit, obit;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	209 unsigned int p, il, ir, fl, *fr;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	210
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	211 old_rawkey0 = old_rawkey1 = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	212 saltbits = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	213 old_salt = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	214 bits24 = (bits28 = bits32 + 4) + 4;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	215
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	216 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	217 * Invert the S-boxes, reordering the input bits.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	218 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	219 for (i = 0; i < 8; i++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	220 for (j = 0; j < 64; j++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	221 b = (j & 0x20) \| ((j & 1) << 4) \| ((j >> 1) & 0xf);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	222 u_sbox[i][j] = sbox[i][b];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	223 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	224
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	225 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	226 * Convert the inverted S-boxes into 4 arrays of 8 bits.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	227 * Each will handle 12 bits of the S-box input.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	228 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	229 for (b = 0; b < 4; b++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	230 for (i = 0; i < 64; i++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	231 for (j = 0; j < 64; j++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	232 m_sbox[b][(i << 6) \| j] =
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	233 (u_sbox[(b << 1)][i] << 4) \|
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	234 u_sbox[(b << 1) + 1][j];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	235
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	236 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	237 * Set up the initial & final permutations into a useful form, and
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	238 * initialise the inverted key permutation.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	239 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	240 for (i = 0; i < 64; i++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	241 init_perm[final_perm[i] = IP[i] - 1] = i;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	242 inv_key_perm[i] = 255;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	243 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	244
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	245 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	246 * Invert the key permutation and initialise the inverted key
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	247 * compression permutation.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	248 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	249 for (i = 0; i < 56; i++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	250 inv_key_perm[key_perm[i] - 1] = i;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	251 inv_comp_perm[i] = 255;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	252 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	253
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	254 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	255 * Invert the key compression permutation.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	256 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	257 for (i = 0; i < 48; i++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	258 inv_comp_perm[comp_perm[i] - 1] = i;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	259 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	260
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	261 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	262 * Set up the OR-mask arrays for the initial and final permutations,
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	263 * and for the key initial and compression permutations.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	264 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	265 for (k = 0; k < 8; k++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	266 for (i = 0; i < 256; i++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	267 *(il = &ip_maskl[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	268 *(ir = &ip_maskr[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	269 *(fl = &fp_maskl[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	270 *(fr = &fp_maskr[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	271 for (j = 0; j < 8; j++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	272 inbit = 8 * k + j;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	273 if (i & bits8[j]) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	274 if ((obit = init_perm[inbit]) < 32)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	275 *il \|= bits32[obit];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	276 else
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	277 *ir \|= bits32[obit-32];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	278 if ((obit = final_perm[inbit]) < 32)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	279 *fl \|= bits32[obit];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	280 else
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	281 *fr \|= bits32[obit - 32];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	282 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	283 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	284 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	285 for (i = 0; i < 128; i++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	286 *(il = &key_perm_maskl[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	287 *(ir = &key_perm_maskr[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	288 for (j = 0; j < 7; j++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	289 inbit = 8 * k + j;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	290 if (i & bits8[j + 1]) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	291 if ((obit = inv_key_perm[inbit]) == 255)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	292 continue;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	293 if (obit < 28)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	294 *il \|= bits28[obit];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	295 else
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	296 *ir \|= bits28[obit - 28];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	297 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	298 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	299 *(il = &comp_maskl[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	300 *(ir = &comp_maskr[k][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	301 for (j = 0; j < 7; j++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	302 inbit = 7 * k + j;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	303 if (i & bits8[j + 1]) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	304 if ((obit=inv_comp_perm[inbit]) == 255)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	305 continue;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	306 if (obit < 24)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	307 *il \|= bits24[obit];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	308 else
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	309 *ir \|= bits24[obit - 24];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	310 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	311 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	312 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	313 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	314
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	315 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	316 * Invert the P-box permutation, and convert into OR-masks for
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	317 * handling the output of the S-box arrays setup above.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	318 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	319 for (i = 0; i < 32; i++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	320 un_pbox[pbox[i] - 1] = i;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	321
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	322 for (b = 0; b < 4; b++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	323 for (i = 0; i < 256; i++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	324 *(p = &psbox[b][i]) = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	325 for (j = 0; j < 8; j++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	326 if (i & bits8[j])
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	327 p \|= bits32[un_pbox[8 b + j]];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	328 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	329 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	330
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	331 des_initialised = 1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	332 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	333
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	334 static void
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	335 setup_salt(salt)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	336 int salt;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	337 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	338 unsigned int obit, saltbit;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	339 int i;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	340
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	341 if (salt == old_salt)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	342 return;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	343 old_salt = salt;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	344
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	345 saltbits = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	346 saltbit = 1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	347 obit = 0x800000;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	348 for (i = 0; i < 24; i++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	349 if (salt & saltbit)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	350 saltbits \|= obit;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	351 saltbit <<= 1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	352 obit >>= 1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	353 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	354 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	355
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	356 static int
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	357 des_setkey(key)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	358 const char *key;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	359 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	360 unsigned int k0, k1, rawkey0, rawkey1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	361 int shifts, round;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	362
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	363 if (!des_initialised)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	364 des_init();
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	365
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	366 rawkey0 = md_ntohl((unsigned int ) key);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	367 rawkey1 = md_ntohl((unsigned int ) (key + 4));
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	368
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	369 if ((rawkey0 \| rawkey1)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	370 && rawkey0 == old_rawkey0
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	371 && rawkey1 == old_rawkey1) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	372 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	373 * Already setup for this key.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	374 * This optimisation fails on a zero key (which is weak and
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	375 * has bad parity anyway) in order to simplify the starting
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	376 * conditions.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	377 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	378 return(0);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	379 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	380 old_rawkey0 = rawkey0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	381 old_rawkey1 = rawkey1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	382
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	383 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	384 * Do key permutation and split into two 28-bit subkeys.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	385 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	386 k0 = key_perm_maskl[0][rawkey0 >> 25]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	387 \| key_perm_maskl[1][(rawkey0 >> 17) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	388 \| key_perm_maskl[2][(rawkey0 >> 9) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	389 \| key_perm_maskl[3][(rawkey0 >> 1) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	390 \| key_perm_maskl[4][rawkey1 >> 25]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	391 \| key_perm_maskl[5][(rawkey1 >> 17) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	392 \| key_perm_maskl[6][(rawkey1 >> 9) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	393 \| key_perm_maskl[7][(rawkey1 >> 1) & 0x7f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	394 k1 = key_perm_maskr[0][rawkey0 >> 25]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	395 \| key_perm_maskr[1][(rawkey0 >> 17) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	396 \| key_perm_maskr[2][(rawkey0 >> 9) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	397 \| key_perm_maskr[3][(rawkey0 >> 1) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	398 \| key_perm_maskr[4][rawkey1 >> 25]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	399 \| key_perm_maskr[5][(rawkey1 >> 17) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	400 \| key_perm_maskr[6][(rawkey1 >> 9) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	401 \| key_perm_maskr[7][(rawkey1 >> 1) & 0x7f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	402 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	403 * Rotate subkeys and do compression permutation.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	404 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	405 shifts = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	406 for (round = 0; round < 16; round++) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	407 unsigned int t0, t1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	408
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	409 shifts += key_shifts[round];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	410
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	411 t0 = (k0 << shifts) \| (k0 >> (28 - shifts));
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	412 t1 = (k1 << shifts) \| (k1 >> (28 - shifts));
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	413
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	414 de_keysl[15 - round] =
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	415 en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	416 \| comp_maskl[1][(t0 >> 14) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	417 \| comp_maskl[2][(t0 >> 7) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	418 \| comp_maskl[3][t0 & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	419 \| comp_maskl[4][(t1 >> 21) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	420 \| comp_maskl[5][(t1 >> 14) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	421 \| comp_maskl[6][(t1 >> 7) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	422 \| comp_maskl[7][t1 & 0x7f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	423
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	424 de_keysr[15 - round] =
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	425 en_keysr[round] = comp_maskr[0][(t0 >> 21) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	426 \| comp_maskr[1][(t0 >> 14) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	427 \| comp_maskr[2][(t0 >> 7) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	428 \| comp_maskr[3][t0 & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	429 \| comp_maskr[4][(t1 >> 21) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	430 \| comp_maskr[5][(t1 >> 14) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	431 \| comp_maskr[6][(t1 >> 7) & 0x7f]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	432 \| comp_maskr[7][t1 & 0x7f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	433 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	434 return(0);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	435 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	436
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	437 static int
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	438 do_des(l_in, r_in, l_out, r_out, count)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	439 unsigned int l_in, r_in, l_out, r_out;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	440 int count;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	441 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	442 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	443 * l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	444 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	445 unsigned int l, r, kl, kr, kl1, kr1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	446 unsigned int f = 0, r48l, r48r;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	447 int round;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	448
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	449 if (count == 0) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	450 return(1);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	451 } else if (count > 0) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	452 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	453 * Encrypting
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	454 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	455 kl1 = en_keysl;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	456 kr1 = en_keysr;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	457 } else {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	458 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	459 * Decrypting
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	460 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	461 count = -count;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	462 kl1 = de_keysl;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	463 kr1 = de_keysr;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	464 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	465
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	466 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	467 * Do initial permutation (IP).
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	468 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	469 l = ip_maskl[0][l_in >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	470 \| ip_maskl[1][(l_in >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	471 \| ip_maskl[2][(l_in >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	472 \| ip_maskl[3][l_in & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	473 \| ip_maskl[4][r_in >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	474 \| ip_maskl[5][(r_in >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	475 \| ip_maskl[6][(r_in >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	476 \| ip_maskl[7][r_in & 0xff];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	477 r = ip_maskr[0][l_in >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	478 \| ip_maskr[1][(l_in >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	479 \| ip_maskr[2][(l_in >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	480 \| ip_maskr[3][l_in & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	481 \| ip_maskr[4][r_in >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	482 \| ip_maskr[5][(r_in >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	483 \| ip_maskr[6][(r_in >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	484 \| ip_maskr[7][r_in & 0xff];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	485
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	486 while (count--) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	487 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	488 * Do each round.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	489 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	490 kl = kl1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	491 kr = kr1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	492 round = 16;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	493 while (round--) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	494 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	495 * Expand R to 48 bits (simulate the E-box).
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	496 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	497 r48l = ((r & 0x00000001) << 23)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	498 \| ((r & 0xf8000000) >> 9)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	499 \| ((r & 0x1f800000) >> 11)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	500 \| ((r & 0x01f80000) >> 13)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	501 \| ((r & 0x001f8000) >> 15);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	502
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	503 r48r = ((r & 0x0001f800) << 7)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	504 \| ((r & 0x00001f80) << 5)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	505 \| ((r & 0x000001f8) << 3)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	506 \| ((r & 0x0000001f) << 1)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	507 \| ((r & 0x80000000) >> 31);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	508 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	509 * Do salting for crypt() and friends, and
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	510 * XOR with the permuted key.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	511 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	512 f = (r48l ^ r48r) & saltbits;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	513 r48l ^= f ^ *kl++;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	514 r48r ^= f ^ *kr++;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	515 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	516 * Do sbox lookups (which shrink it back to 32 bits)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	517 * and do the pbox permutation at the same time.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	518 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	519 f = psbox[0][m_sbox[0][r48l >> 12]]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	520 \| psbox[1][m_sbox[1][r48l & 0xfff]]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	521 \| psbox[2][m_sbox[2][r48r >> 12]]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	522 \| psbox[3][m_sbox[3][r48r & 0xfff]];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	523 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	524 * Now that we've permuted things, complete f().
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	525 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	526 f ^= l;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	527 l = r;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	528 r = f;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	529 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	530 r = l;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	531 l = f;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	532 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	533 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	534 * Do final permutation (inverse of IP).
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	535 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	536 *l_out = fp_maskl[0][l >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	537 \| fp_maskl[1][(l >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	538 \| fp_maskl[2][(l >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	539 \| fp_maskl[3][l & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	540 \| fp_maskl[4][r >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	541 \| fp_maskl[5][(r >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	542 \| fp_maskl[6][(r >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	543 \| fp_maskl[7][r & 0xff];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	544 *r_out = fp_maskr[0][l >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	545 \| fp_maskr[1][(l >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	546 \| fp_maskr[2][(l >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	547 \| fp_maskr[3][l & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	548 \| fp_maskr[4][r >> 24]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	549 \| fp_maskr[5][(r >> 16) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	550 \| fp_maskr[6][(r >> 8) & 0xff]
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	551 \| fp_maskr[7][r & 0xff];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	552 return(0);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	553 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	554
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	555 static int
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	556 des_cipher(in, out, salt, count)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	557 const char *in;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	558 char *out;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	559 int salt;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	560 int count;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	561 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	562 unsigned int l_out, r_out, rawl, rawr;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	563 unsigned int x[2];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	564 int retval;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	565
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	566 if (!des_initialised)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	567 des_init();
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	568
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	569 setup_salt(salt);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	570
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	571 memcpy(x, in, sizeof x);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	572 rawl = md_ntohl(x[0]);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	573 rawr = md_ntohl(x[1]);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	574 retval = do_des(rawl, rawr, &l_out, &r_out, count);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	575
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	576 x[0] = md_htonl(l_out);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	577 x[1] = md_htonl(r_out);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	578 memcpy(out, x, sizeof x);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	579 return(retval);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	580 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	581
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	582 char *
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	583 xcrypt(key, setting)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	584 const char *key;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	585 const char *setting;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	586 {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	587 int i;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	588 unsigned int count, salt, l, r0, r1, keybuf[2];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	589 unsigned char p, q;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	590 static unsigned char output[21];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	591
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	592 if (!des_initialised)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	593 des_init();
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	594
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	595 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	596 * Copy the key, shifting each character up by one bit
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	597 * and padding with zeros.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	598 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	599 q = (unsigned char *) keybuf;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	600 while ((q - (unsigned char *) keybuf) < sizeof(keybuf)) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	601 if ((q++ = key << 1))
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	602 key++;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	603 }
304 e52a8a7ad4c5 Fix many compiler warnings. John "Elwin" Edwards parents: 218 diff changeset	604 if (des_setkey((char *) keybuf))
63 0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	605 return(NULL);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	606
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	607 if (*setting == _PASSWORD_EFMT1) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	608 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	609 * "new"-style:
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	610 * setting - underscore, 4 bytes of count, 4 bytes of salt
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	611 * key - unlimited characters
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	612 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	613 for (i = 1, count = 0; i < 5; i++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	614 count \|= ascii_to_bin(setting[i]) << (i - 1) * 6;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	615
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	616 for (i = 5, salt = 0; i < 9; i++)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	617 salt \|= ascii_to_bin(setting[i]) << (i - 5) * 6;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	618
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	619 while (*key) {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	620 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	621 * Encrypt the key with itself.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	622 */
304 e52a8a7ad4c5 Fix many compiler warnings. John "Elwin" Edwards parents: 218 diff changeset	623 if (des_cipher((char)keybuf, (char)keybuf, 0, 1))
63 0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	624 return(NULL);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	625 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	626 * And XOR with the next 8 characters of the key.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	627 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	628 q = (unsigned char *) keybuf;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	629 while (((q - (unsigned char *) keybuf) < sizeof(keybuf)) &&
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	630 *key)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	631 q++ ^= key++ << 1;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	632
304 e52a8a7ad4c5 Fix many compiler warnings. John "Elwin" Edwards parents: 218 diff changeset	633 if (des_setkey((char *) keybuf))
63 0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	634 return(NULL);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	635 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	636 strncpy((char *)output, setting, 9);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	637
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	638 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	639 * Double check that we weren't given a short setting.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	640 * If we were, the above code will probably have created
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	641 * wierd values for count and salt, but we don't really care.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	642 * Just make sure the output string doesn't have an extra
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	643 * NUL in it.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	644 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	645 output[9] = '\0';
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	646 p = output + strlen((const char *)output);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	647 } else {
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	648 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	649 * "old"-style:
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	650 * setting - 2 bytes of salt
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	651 * key - up to 8 characters
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	652 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	653 count = 25;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	654
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	655 salt = (ascii_to_bin(setting[1]) << 6)
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	656 \| ascii_to_bin(setting[0]);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	657
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	658 output[0] = setting[0];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	659 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	660 * If the encrypted password that the salt was extracted from
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	661 * is only 1 character long, the salt will be corrupted. We
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	662 * need to ensure that the output string doesn't have an extra
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	663 * NUL in it!
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	664 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	665 output[1] = setting[1] ? setting[1] : output[0];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	666
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	667 p = output + 2;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	668 }
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	669 setup_salt(salt);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	670 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	671 * Do it.
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	672 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	673 if (do_des(0, 0, &r0, &r1, count))
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	674 return(NULL);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	675 /*
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	676 * Now encode the result...
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	677 */
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	678 l = (r0 >> 8);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	679 *p++ = ascii64[(l >> 18) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	680 *p++ = ascii64[(l >> 12) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	681 *p++ = ascii64[(l >> 6) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	682 *p++ = ascii64[l & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	683
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	684 l = (r0 << 16) \| ((r1 >> 16) & 0xffff);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	685 *p++ = ascii64[(l >> 18) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	686 *p++ = ascii64[(l >> 12) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	687 *p++ = ascii64[(l >> 6) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	688 *p++ = ascii64[l & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	689
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	690 l = r1 << 2;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	691 *p++ = ascii64[(l >> 12) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	692 *p++ = ascii64[(l >> 6) & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	693 *p++ = ascii64[l & 0x3f];
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	694 *p = 0;
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	695
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	696 return((char *)output);
0ed67132cf10 Import Advanced Rogue 5.8 from the Roguelike Restoration Project (r1490) elwin parents: diff changeset	697 }

Mercurial > hg > early-roguelike

annotate arogue5/xcrypt.c @ 304:e52a8a7ad4c5