Mercurial > hg > early-roguelike
annotate rogue5/xcrypt.c @ 248:182e26224f92 rel2016.06
README.txt: additions and clarifications.
author | John "Elwin" Edwards |
---|---|
date | Sun, 29 May 2016 17:05:38 -0400 |
parents | f502bf60e6e4 |
children |
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
|
103 static unsigned char comp_perm[48] = { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
104 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
105 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
106 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
107 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
108 }; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
109 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
110 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
111 * No E box is used, as it's replaced by some ANDs, shifts, and ORs. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
112 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
113 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
114 static unsigned char u_sbox[8][64]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
115 static unsigned char sbox[8][64] = { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
116 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
117 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
118 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
119 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
120 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
121 }, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
122 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
123 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
124 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
125 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
126 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
127 }, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
128 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
129 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
130 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
131 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
132 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
133 }, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
134 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
135 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
136 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
137 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
138 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
139 }, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
140 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
141 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
142 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
143 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
144 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
145 }, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
146 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
147 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
148 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
149 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
150 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
151 }, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
152 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
153 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
154 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
155 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
156 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
157 }, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
158 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
159 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
160 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
161 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
162 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
163 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
164 }; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
165 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
166 static unsigned char un_pbox[32]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
167 static unsigned char pbox[32] = { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
168 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
169 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
170 }; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
171 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
172 static unsigned int bits32[32] = |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
173 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
174 0x80000000, 0x40000000, 0x20000000, 0x10000000, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
175 0x08000000, 0x04000000, 0x02000000, 0x01000000, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
176 0x00800000, 0x00400000, 0x00200000, 0x00100000, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
177 0x00080000, 0x00040000, 0x00020000, 0x00010000, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
178 0x00008000, 0x00004000, 0x00002000, 0x00001000, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
179 0x00000800, 0x00000400, 0x00000200, 0x00000100, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
180 0x00000080, 0x00000040, 0x00000020, 0x00000010, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
181 0x00000008, 0x00000004, 0x00000002, 0x00000001 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
182 }; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
183 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
184 static unsigned char bits8[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
185 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
186 static unsigned int saltbits; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
187 static int old_salt; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
188 static unsigned int *bits28, *bits24; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
189 static unsigned char init_perm[64], final_perm[64]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
190 static unsigned int en_keysl[16], en_keysr[16]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
191 static unsigned int de_keysl[16], de_keysr[16]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
192 static int des_initialised = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
193 static unsigned char m_sbox[4][4096]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
194 static unsigned int psbox[4][256]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
195 static unsigned int ip_maskl[8][256], ip_maskr[8][256]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
196 static unsigned int fp_maskl[8][256], fp_maskr[8][256]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
197 static unsigned int key_perm_maskl[8][128], key_perm_maskr[8][128]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
198 static unsigned int comp_maskl[8][128], comp_maskr[8][128]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
199 static unsigned int old_rawkey0, old_rawkey1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
200 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
201 static unsigned char ascii64[] = |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
202 "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
203 /* 0000000000111111111122222222223333333333444444444455555555556666 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
204 /* 0123456789012345678901234567890123456789012345678901234567890123 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
205 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
206 static __inline int |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
207 ascii_to_bin(int ch) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
208 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
209 if (ch > 'z') |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
210 return(0); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
211 if (ch >= 'a') |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
212 return(ch - 'a' + 38); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
213 if (ch > 'Z') |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
214 return(0); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
215 if (ch >= 'A') |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
216 return(ch - 'A' + 12); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
217 if (ch > '9') |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
218 return(0); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
219 if (ch >= '.') |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
220 return(ch - '.'); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
221 return(0); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
222 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
223 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
224 static void |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
225 des_init(void) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
226 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
227 int i, j, b, k, inbit, obit; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
228 unsigned int *p, *il, *ir, *fl, *fr; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
229 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
230 old_rawkey0 = old_rawkey1 = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
231 saltbits = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
232 old_salt = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
233 bits24 = (bits28 = bits32 + 4) + 4; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
234 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
235 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
236 * Invert the S-boxes, reordering the input bits. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
237 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
238 for (i = 0; i < 8; i++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
239 for (j = 0; j < 64; j++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
240 b = (j & 0x20) | ((j & 1) << 4) | ((j >> 1) & 0xf); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
241 u_sbox[i][j] = sbox[i][b]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
242 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
243 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
244 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
245 * Convert the inverted S-boxes into 4 arrays of 8 bits. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
246 * Each will handle 12 bits of the S-box input. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
247 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
248 for (b = 0; b < 4; b++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
249 for (i = 0; i < 64; i++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
250 for (j = 0; j < 64; j++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
251 m_sbox[b][(i << 6) | j] = |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
252 (u_sbox[(b << 1)][i] << 4) | |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
253 u_sbox[(b << 1) + 1][j]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
254 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
255 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
256 * Set up the initial & final permutations into a useful form, and |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
257 * initialise the inverted key permutation. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
258 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
259 for (i = 0; i < 64; i++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
260 init_perm[final_perm[i] = IP[i] - 1] = (unsigned char) i; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
261 inv_key_perm[i] = 255; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
262 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
263 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
264 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
265 * Invert the key permutation and initialise the inverted key |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
266 * compression permutation. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
267 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
268 for (i = 0; i < 56; i++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
269 inv_key_perm[key_perm[i] - 1] = (unsigned char) i; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
270 inv_comp_perm[i] = 255; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
271 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
272 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
273 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
274 * Invert the key compression permutation. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
275 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
276 for (i = 0; i < 48; i++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
277 inv_comp_perm[comp_perm[i] - 1] = (unsigned char) i; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
278 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
279 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
280 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
281 * Set up the OR-mask arrays for the initial and final permutations, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
282 * and for the key initial and compression permutations. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
283 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
284 for (k = 0; k < 8; k++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
285 for (i = 0; i < 256; i++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
286 *(il = &ip_maskl[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
287 *(ir = &ip_maskr[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
288 *(fl = &fp_maskl[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
289 *(fr = &fp_maskr[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
290 for (j = 0; j < 8; j++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
291 inbit = 8 * k + j; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
292 if (i & bits8[j]) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
293 if ((obit = init_perm[inbit]) < 32) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
294 *il |= bits32[obit]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
295 else |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
296 *ir |= bits32[obit-32]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
297 if ((obit = final_perm[inbit]) < 32) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
298 *fl |= bits32[obit]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
299 else |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
300 *fr |= bits32[obit - 32]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
301 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
302 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
303 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
304 for (i = 0; i < 128; i++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
305 *(il = &key_perm_maskl[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
306 *(ir = &key_perm_maskr[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
307 for (j = 0; j < 7; j++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
308 inbit = 8 * k + j; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
309 if (i & bits8[j + 1]) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
310 if ((obit = inv_key_perm[inbit]) == 255) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
311 continue; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
312 if (obit < 28) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
313 *il |= bits28[obit]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
314 else |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
315 *ir |= bits28[obit - 28]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
316 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
317 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
318 *(il = &comp_maskl[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
319 *(ir = &comp_maskr[k][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
320 for (j = 0; j < 7; j++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
321 inbit = 7 * k + j; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
322 if (i & bits8[j + 1]) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
323 if ((obit=inv_comp_perm[inbit]) == 255) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
324 continue; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
325 if (obit < 24) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
326 *il |= bits24[obit]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
327 else |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
328 *ir |= bits24[obit - 24]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
329 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
330 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
331 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
332 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
333 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
334 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
335 * Invert the P-box permutation, and convert into OR-masks for |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
336 * handling the output of the S-box arrays setup above. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
337 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
338 for (i = 0; i < 32; i++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
339 un_pbox[pbox[i] - 1] = (unsigned char) i; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
340 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
341 for (b = 0; b < 4; b++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
342 for (i = 0; i < 256; i++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
343 *(p = &psbox[b][i]) = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
344 for (j = 0; j < 8; j++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
345 if (i & bits8[j]) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
346 *p |= bits32[un_pbox[8 * b + j]]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
347 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
348 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
349 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
350 des_initialised = 1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
351 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
352 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
353 static void |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
354 setup_salt(int salt) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
355 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
356 unsigned int obit, saltbit; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
357 int i; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
358 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
359 if (salt == old_salt) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
360 return; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
361 old_salt = salt; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
362 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
363 saltbits = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
364 saltbit = 1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
365 obit = 0x800000; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
366 for (i = 0; i < 24; i++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
367 if (salt & saltbit) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
368 saltbits |= obit; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
369 saltbit <<= 1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
370 obit >>= 1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
371 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
372 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
373 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
374 static int |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
375 des_setkey(const char *key) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
376 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
377 unsigned int k0, k1, rawkey0, rawkey1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
378 int shifts, round; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
379 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
380 if (!des_initialised) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
381 des_init(); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
382 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
383 rawkey0 = xntohl(*(unsigned int *) key); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
384 rawkey1 = xntohl(*(unsigned int *) (key + 4)); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
385 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
386 if ((rawkey0 | rawkey1) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
387 && rawkey0 == old_rawkey0 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
388 && rawkey1 == old_rawkey1) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
389 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
390 * Already setup for this key. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
391 * This optimisation fails on a zero key (which is weak and |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
392 * has bad parity anyway) in order to simplify the starting |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
393 * conditions. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
394 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
395 return(0); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
396 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
397 old_rawkey0 = rawkey0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
398 old_rawkey1 = rawkey1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
399 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
400 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
401 * Do key permutation and split into two 28-bit subkeys. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
402 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
403 k0 = key_perm_maskl[0][rawkey0 >> 25] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
404 | key_perm_maskl[1][(rawkey0 >> 17) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
405 | key_perm_maskl[2][(rawkey0 >> 9) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
406 | key_perm_maskl[3][(rawkey0 >> 1) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
407 | key_perm_maskl[4][rawkey1 >> 25] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
408 | key_perm_maskl[5][(rawkey1 >> 17) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
409 | key_perm_maskl[6][(rawkey1 >> 9) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
410 | key_perm_maskl[7][(rawkey1 >> 1) & 0x7f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
411 k1 = key_perm_maskr[0][rawkey0 >> 25] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
412 | key_perm_maskr[1][(rawkey0 >> 17) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
413 | key_perm_maskr[2][(rawkey0 >> 9) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
414 | key_perm_maskr[3][(rawkey0 >> 1) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
415 | key_perm_maskr[4][rawkey1 >> 25] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
416 | key_perm_maskr[5][(rawkey1 >> 17) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
417 | key_perm_maskr[6][(rawkey1 >> 9) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
418 | key_perm_maskr[7][(rawkey1 >> 1) & 0x7f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
419 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
420 * Rotate subkeys and do compression permutation. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
421 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
422 shifts = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
423 for (round = 0; round < 16; round++) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
424 unsigned int t0, t1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
425 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
426 shifts += key_shifts[round]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
427 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
428 t0 = (k0 << shifts) | (k0 >> (28 - shifts)); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
429 t1 = (k1 << shifts) | (k1 >> (28 - shifts)); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
430 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
431 de_keysl[15 - round] = |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
432 en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
433 | comp_maskl[1][(t0 >> 14) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
434 | comp_maskl[2][(t0 >> 7) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
435 | comp_maskl[3][t0 & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
436 | comp_maskl[4][(t1 >> 21) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
437 | comp_maskl[5][(t1 >> 14) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
438 | comp_maskl[6][(t1 >> 7) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
439 | comp_maskl[7][t1 & 0x7f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
440 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
441 de_keysr[15 - round] = |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
442 en_keysr[round] = comp_maskr[0][(t0 >> 21) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
443 | comp_maskr[1][(t0 >> 14) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
444 | comp_maskr[2][(t0 >> 7) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
445 | comp_maskr[3][t0 & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
446 | comp_maskr[4][(t1 >> 21) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
447 | comp_maskr[5][(t1 >> 14) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
448 | comp_maskr[6][(t1 >> 7) & 0x7f] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
449 | comp_maskr[7][t1 & 0x7f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
450 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
451 return(0); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
452 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
453 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
454 static int |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
455 do_des(unsigned int l_in, unsigned int r_in, unsigned int *l_out, |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
456 unsigned int *r_out, int count) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
457 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
458 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
459 * l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
460 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
461 unsigned int l, r, *kl, *kr, *kl1, *kr1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
462 unsigned int f = 0, r48l, r48r; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
463 int round; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
464 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
465 if (count == 0) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
466 return(1); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
467 } else if (count > 0) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
468 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
469 * Encrypting |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
470 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
471 kl1 = en_keysl; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
472 kr1 = en_keysr; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
473 } else { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
474 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
475 * Decrypting |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
476 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
477 count = -count; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
478 kl1 = de_keysl; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
479 kr1 = de_keysr; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
480 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
481 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
482 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
483 * Do initial permutation (IP). |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
484 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
485 l = ip_maskl[0][l_in >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
486 | ip_maskl[1][(l_in >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
487 | ip_maskl[2][(l_in >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
488 | ip_maskl[3][l_in & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
489 | ip_maskl[4][r_in >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
490 | ip_maskl[5][(r_in >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
491 | ip_maskl[6][(r_in >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
492 | ip_maskl[7][r_in & 0xff]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
493 r = ip_maskr[0][l_in >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
494 | ip_maskr[1][(l_in >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
495 | ip_maskr[2][(l_in >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
496 | ip_maskr[3][l_in & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
497 | ip_maskr[4][r_in >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
498 | ip_maskr[5][(r_in >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
499 | ip_maskr[6][(r_in >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
500 | ip_maskr[7][r_in & 0xff]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
501 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
502 while (count--) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
503 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
504 * Do each round. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
505 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
506 kl = kl1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
507 kr = kr1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
508 round = 16; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
509 while (round--) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
510 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
511 * Expand R to 48 bits (simulate the E-box). |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
512 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
513 r48l = ((r & 0x00000001) << 23) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
514 | ((r & 0xf8000000) >> 9) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
515 | ((r & 0x1f800000) >> 11) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
516 | ((r & 0x01f80000) >> 13) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
517 | ((r & 0x001f8000) >> 15); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
518 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
519 r48r = ((r & 0x0001f800) << 7) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
520 | ((r & 0x00001f80) << 5) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
521 | ((r & 0x000001f8) << 3) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
522 | ((r & 0x0000001f) << 1) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
523 | ((r & 0x80000000) >> 31); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
524 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
525 * Do salting for crypt() and friends, and |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
526 * XOR with the permuted key. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
527 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
528 f = (r48l ^ r48r) & saltbits; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
529 r48l ^= f ^ *kl++; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
530 r48r ^= f ^ *kr++; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
531 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
532 * Do sbox lookups (which shrink it back to 32 bits) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
533 * and do the pbox permutation at the same time. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
534 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
535 f = psbox[0][m_sbox[0][r48l >> 12]] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
536 | psbox[1][m_sbox[1][r48l & 0xfff]] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
537 | psbox[2][m_sbox[2][r48r >> 12]] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
538 | psbox[3][m_sbox[3][r48r & 0xfff]]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
539 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
540 * Now that we've permuted things, complete f(). |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
541 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
542 f ^= l; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
543 l = r; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
544 r = f; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
545 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
546 r = l; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
547 l = f; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
548 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
549 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
550 * Do final permutation (inverse of IP). |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
551 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
552 *l_out = fp_maskl[0][l >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
553 | fp_maskl[1][(l >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
554 | fp_maskl[2][(l >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
555 | fp_maskl[3][l & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
556 | fp_maskl[4][r >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
557 | fp_maskl[5][(r >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
558 | fp_maskl[6][(r >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
559 | fp_maskl[7][r & 0xff]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
560 *r_out = fp_maskr[0][l >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
561 | fp_maskr[1][(l >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
562 | fp_maskr[2][(l >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
563 | fp_maskr[3][l & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
564 | fp_maskr[4][r >> 24] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
565 | fp_maskr[5][(r >> 16) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
566 | fp_maskr[6][(r >> 8) & 0xff] |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
567 | fp_maskr[7][r & 0xff]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
568 return(0); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
569 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
570 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
571 static int |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
572 des_cipher(const char *in, char *out, int salt, int count) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
573 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
574 unsigned int l_out, r_out, rawl, rawr; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
575 unsigned int x[2]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
576 int retval; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
577 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
578 if (!des_initialised) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
579 des_init(); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
580 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
581 setup_salt(salt); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
582 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
583 memcpy(x, in, sizeof x); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
584 rawl = xntohl(x[0]); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
585 rawr = xntohl(x[1]); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
586 retval = do_des(rawl, rawr, &l_out, &r_out, count); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
587 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
588 x[0] = xhtonl(l_out); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
589 x[1] = xhtonl(r_out); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
590 memcpy(out, x, sizeof x); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
591 return(retval); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
592 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
593 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
594 char * |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
595 xcrypt(const char *key, const char *setting) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
596 { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
597 int i; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
598 unsigned int count, salt, l, r0, r1, keybuf[2]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
599 unsigned char *p, *q; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
600 static unsigned char output[21]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
601 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
602 if (!des_initialised) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
603 des_init(); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
604 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
605 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
606 * Copy the key, shifting each character up by one bit |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
607 * and padding with zeros. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
608 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
609 q = (unsigned char *) keybuf; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
610 while ((q - (unsigned char *) keybuf) < sizeof(keybuf)) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
611 if ((*q++ = *key << 1)) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
612 key++; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
613 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
614 if (des_setkey((const char *) keybuf)) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
615 return(NULL); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
616 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
617 if (*setting == _PASSWORD_EFMT1) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
618 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
619 * "new"-style: |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
620 * setting - underscore, 4 bytes of count, 4 bytes of salt |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
621 * key - unlimited characters |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
622 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
623 for (i = 1, count = 0; i < 5; i++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
624 count |= ascii_to_bin(setting[i]) << (i - 1) * 6; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
625 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
626 for (i = 5, salt = 0; i < 9; i++) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
627 salt |= ascii_to_bin(setting[i]) << (i - 5) * 6; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
628 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
629 while (*key) { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
630 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
631 * Encrypt the key with itself. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
632 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
633 if (des_cipher((const char*)keybuf, (char*)keybuf, 0, 1)) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
634 return(NULL); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
635 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
636 * And XOR with the next 8 characters of the key. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
637 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
638 q = (unsigned char *) keybuf; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
639 while (((q - (unsigned char *) keybuf) < sizeof(keybuf)) && |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
640 *key) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
641 *q++ ^= *key++ << 1; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
642 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
643 if (des_setkey((const char *) keybuf)) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
644 return(NULL); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
645 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
646 strncpy((char *)output, setting, 9); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
647 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
648 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
649 * Double check that we weren't given a short setting. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
650 * If we were, the above code will probably have created |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
651 * wierd values for count and salt, but we don't really care. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
652 * Just make sure the output string doesn't have an extra |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
653 * NUL in it. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
654 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
655 output[9] = '\0'; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
656 p = output + strlen((const char *)output); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
657 } else { |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
658 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
659 * "old"-style: |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
660 * setting - 2 bytes of salt |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
661 * key - up to 8 characters |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
662 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
663 count = 25; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
664 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
665 salt = (ascii_to_bin(setting[1]) << 6) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
666 | ascii_to_bin(setting[0]); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
667 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
668 output[0] = setting[0]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
669 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
670 * If the encrypted password that the salt was extracted from |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
671 * is only 1 character long, the salt will be corrupted. We |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
672 * need to ensure that the output string doesn't have an extra |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
673 * NUL in it! |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
674 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
675 output[1] = setting[1] ? setting[1] : output[0]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
676 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
677 p = output + 2; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
678 } |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
679 setup_salt(salt); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
680 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
681 * Do it. |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
682 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
683 if (do_des(0, 0, &r0, &r1, count)) |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
684 return(NULL); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
685 /* |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
686 * Now encode the result... |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
687 */ |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
688 l = (r0 >> 8); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
689 *p++ = ascii64[(l >> 18) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
690 *p++ = ascii64[(l >> 12) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
691 *p++ = ascii64[(l >> 6) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
692 *p++ = ascii64[l & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
693 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
694 l = (r0 << 16) | ((r1 >> 16) & 0xffff); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
695 *p++ = ascii64[(l >> 18) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
696 *p++ = ascii64[(l >> 12) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
697 *p++ = ascii64[(l >> 6) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
698 *p++ = ascii64[l & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
699 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
700 l = r1 << 2; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
701 *p++ = ascii64[(l >> 12) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
702 *p++ = ascii64[(l >> 6) & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
703 *p++ = ascii64[l & 0x3f]; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
704 *p = 0; |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
705 |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
706 return((char *)output); |
f502bf60e6e4
Import Rogue 5.4 from the Roguelike Restoration Project (r1490)
elwin
parents:
diff
changeset
|
707 } |