Mercurial > hg > early-roguelike

annotate rogue5/xcrypt.c @ 33:f502bf60e6e4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
author elwin
date Mon, 24 May 2010 20:10:59 +0000
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
33
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
1 /*
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
2 * FreeSec: libcrypt
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
3 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
4 * Copyright (C) 1994 David Burren
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
5 * All rights reserved.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
6 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
7 * Redistribution and use in source and binary forms, with or without
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
8 * modification, are permitted provided that the following conditions
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
9 * are met:
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
10 * 1. Redistributions of source code must retain the above copyright
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
11 * notice, this list of conditions and the following disclaimer.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
12 * 2. Redistributions in binary form must reproduce the above copyright
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
13 * notice, this list of conditions and the following disclaimer in the
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
14 * documentation and/or other materials provided with the distribution.
f502bf60e6e4 Import Rogue 5.4 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
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
16 * may be used to endorse or promote products derived from this software
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
17 * without specific prior written permission.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
18 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
f502bf60e6e4 Import Rogue 5.4 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
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
29 * SUCH DAMAGE.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
30 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
31 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
32 * This is an original implementation of the DES and the crypt(3) interfaces
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
33 * by David Burren <davidb@werj.com.au>.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
34 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
35 * An excellent reference on the underlying algorithm (and related
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
36 * algorithms) is:
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
37 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
38 * B. Schneier, Applied Cryptography: protocols, algorithms,
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
39 * and source code in C, John Wiley & Sons, 1994.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
40 *
f502bf60e6e4 Import Rogue 5.4 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,
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
42 * pbox, and final permutations are inverted (this has been brought to the
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
43 * attention of the author). A list of errata for this book has been
f502bf60e6e4 Import Rogue 5.4 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.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
45 *
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
46 * NOTE:
f502bf60e6e4 Import Rogue 5.4 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
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
48 * only the crypt() interface. This is required to make binaries linked
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
49 * against crypt.o exportable or re-exportable from the USA.
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
50 */
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
51
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
52 #include <sys/types.h>
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
53 #include <string.h>
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
54
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
55 static unsigned int md_endian = 0x01020304;
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
56
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
57 unsigned int
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
58 xntohl(unsigned int x)
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
59 {
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
60 if ( *((char *)&md_endian) == 0x01 )
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
61 return(x);
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
62 else
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
63 return( ((x & 0x000000ffU) << 24) |
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
64 ((x & 0x0000ff00U) << 8) |
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
65 ((x & 0x00ff0000U) >> 8) |
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
66 ((x & 0xff000000U) >> 24) );
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
67 }
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
68
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
69 unsigned int
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
70 xhtonl(unsigned int x)
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
71 {
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
72 if ( *((char *)&md_endian) == 0x01 )
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
73 return(x);
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
74 else
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
75 return( ((x & 0x000000ffU) << 24) |
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
76 ((x & 0x0000ff00U) << 8) |
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
77 ((x & 0x00ff0000U) >> 8) |
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
78 ((x & 0xff000000U) >> 24) );
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
79 }
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
80
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
81 #define _PASSWORD_EFMT1 '_'
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
82
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
83 static unsigned char IP[64] = {
f502bf60e6e4 Import Rogue 5.4 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,
f502bf60e6e4 Import Rogue 5.4 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,
f502bf60e6e4 Import Rogue 5.4 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,
f502bf60e6e4 Import Rogue 5.4 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
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
88 };
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
89
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
90 static unsigned char inv_key_perm[64];
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
91 static unsigned char key_perm[56] = {
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
92 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18,
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
93 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
94 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22,
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
95 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
96 };
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
97
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
98 static unsigned char key_shifts[16] = {
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
99 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
100 };
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
101
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset
102 static unsigned char inv_comp_perm[56];
f502bf60e6e4 Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff changeset