Mercurial > hg > early-roguelike

annotate srogue/xcrypt.c @ 124:d10fc4a065ac

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
rogue5: ignore the file name stored in the save file. state.c had put file_name into the save file. The saved value was used to overwrite file_name on restore. If the save file had been renamed, unlink(file_name) would then fail, because file_name held the old name. To avoid breaking savefile compatibility, file_name is still saved, but it is read back into a temporary buffer and then ignored. I thought I fixed this already.
author John "Elwin" Edwards
date Fri, 16 Jan 2015 13:42:30 -0500
parents e6c8652473fe
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
36
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
1 /*
121
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
2 * FreeSec: libcrypt
36
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
3 *
121
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
4 * Copyright (C) 1994 David Burren
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
5 * All rights reserved.
36
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
6 *
121
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
7 * Redistribution and use in source and binary forms, with or without
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
8 * modification, are permitted provided that the following conditions
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
9 * are met:
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
10 * 1. Redistributions of source code must retain the above copyright
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
11 * notice, this list of conditions and the following disclaimer.
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
12 * 2. Redistributions in binary form must reproduce the above copyright
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
13 * notice, this list of conditions and the following disclaimer in the
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
14 * documentation and/or other materials provided with the distribution.
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
15 * 3. Neither the name(s) of the author(s) nor the names of other contributors
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
16 * may be used to endorse or promote products derived from this software
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
17 * without specific prior written permission.
36
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
18 *
121
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
29 * SUCH DAMAGE.
36
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
30 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
31 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
32 * This is an original implementation of the DES and the crypt(3) interfaces
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
33 * by David Burren <davidb@werj.com.au>.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
34 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
35 * An excellent reference on the underlying algorithm (and related
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
36 * algorithms) is:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
37 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
38 * B. Schneier, Applied Cryptography: protocols, algorithms,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
39 * and source code in C, John Wiley & Sons, 1994.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
40 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
41 * Note that in that book's description of DES the lookups for the initial,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
42 * pbox, and final permutations are inverted (this has been brought to the
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
43 * attention of the author). A list of errata for this book has been
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
44 * posted to the sci.crypt newsgroup by the author and is available for FTP.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
45 *
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
46 * NOTE:
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
47 * This file has a static version of des_setkey() so that crypt.o exports
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
48 * only the crypt() interface. This is required to make binaries linked
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
49 * against crypt.o exportable or re-exportable from the USA.
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
50 */
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
51
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
52 #include <sys/types.h>
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
53 #include <string.h>
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
54
121
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
55 static unsigned int md_endian = 0x01020304;
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
56
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
57 unsigned int
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
58 xntohl(unsigned int x)
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
59 {
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
60 if ( *((char *)&md_endian) == 0x01 )
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
61 return(x);
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
62 else
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
63 return( ((x & 0x000000ffU) << 24) |
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
64 ((x & 0x0000ff00U) << 8) |
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
65 ((x & 0x00ff0000U) >> 8) |
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
66 ((x & 0xff000000U) >> 24) );
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
67 }
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
68
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
69 unsigned int
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
70 xhtonl(unsigned int x)
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
71 {
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
72 if ( *((char *)&md_endian) == 0x01 )
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
73 return(x);
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
74 else
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
75 return( ((x & 0x000000ffU) << 24) |
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
76 ((x & 0x0000ff00U) << 8) |
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
77 ((x & 0x00ff0000U) >> 8) |
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
78 ((x & 0xff000000U) >> 24) );
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
79 }
e6c8652473fe srogue: more compatibility improvements.
John "Elwin" Edwards
parents: 119
diff changeset
80
36
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
81 #define _PASSWORD_EFMT1 '_'
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
82
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
83 static unsigned char IP[64] = {
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
84 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
85 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
86 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3,
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
87 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
88 };
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
89
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
90 static unsigned char inv_key_perm[64];
2128c7dc8a40 Import Super-Rogue 9.0 from the Roguelike Restoration Project (r1490)
elwin
parents: