Mercurial > hg > early-roguelike
annotate xrogue/xcrypt.c @ 239:837044d2c362
Merge the GCC5 and build fix branches.
This fixes all warnings produced by GCC 5, except the ones related to
system functions. Those could be fixed by including the proper headers,
but it would be better to replace the system-dependent code with
functions from mdport.c.
author | John "Elwin" Edwards |
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date | Fri, 11 Mar 2016 19:47:52 -0500 |
parents | 3def5e487faa |
children | e52a8a7ad4c5 |
rev | line source |
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1 /* |
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2 * FreeSec: libcrypt |
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3 * |
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4 * Copyright (C) 1994 David Burren |
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5 * All rights reserved. |
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6 * |
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7 * Redistribution and use in source and binary forms, with or without |
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8 * modification, are permitted provided that the following conditions |
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9 * are met: |
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10 * 1. Redistributions of source code must retain the above copyright |
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11 * notice, this list of conditions and the following disclaimer. |
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12 * 2. Redistributions in binary form must reproduce the above copyright |
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13 * notice, this list of conditions and the following disclaimer in the |
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14 * documentation and/or other materials provided with the distribution. |
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15 * 3. Neither the name(s) of the author(s) nor the names of other contributors |
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16 * may be used to endorse or promote products derived from this software |
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17 * without specific prior written permission. |
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18 * |
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19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND |
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20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE |
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23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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29 * SUCH DAMAGE. |
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30 * |
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31 * |
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32 * This is an original implementation of the DES and the crypt(3) interfaces |
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33 * by David Burren <davidb@werj.com.au>. |
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34 * |
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35 * An excellent reference on the underlying algorithm (and related |
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36 * algorithms) is: |
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37 * |
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38 * B. Schneier, Applied Cryptography: protocols, algorithms, |
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39 * and source code in C, John Wiley & Sons, 1994. |
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40 * |
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41 * Note that in that book's description of DES the lookups for the initial, |
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42 * pbox, and final permutations are inverted (this has been brought to the |
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43 * attention of the author). A list of errata for this book has been |
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44 * posted to the sci.crypt newsgroup by the author and is available for FTP. |
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45 * |
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46 * NOTE: |
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47 * This file has a static version of des_setkey() so that crypt.o exports |
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48 * only the crypt() interface. This is required to make binaries linked |
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49 * against crypt.o exportable or re-exportable from the USA. |
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50 */ |
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51 |
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52 #include <sys/types.h> |
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53 #include <string.h> |
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54 |
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55 #define _PASSWORD_EFMT1 '_' |
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56 |
207
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57 unsigned long int md_htonl(unsigned long int x); |
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58 unsigned long int md_ntohl(unsigned long int x); |
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59 |
133
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60 static unsigned char IP[64] = { |
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61 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, |
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62 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8, |
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63 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, |
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64 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7 |
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65 }; |
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66 |
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67 static unsigned char inv_key_perm[64]; |
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68 static unsigned char key_perm[56] = { |
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69 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, |
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70 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36, |
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71 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, |
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72 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4 |
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73 }; |
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74 |
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75 static unsigned char key_shifts[16] = { |
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76 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 |
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77 }; |
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78 |
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79 static unsigned char inv_comp_perm[56]; |
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80 static unsigned char comp_perm[48] = { |
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81 14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10, |
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82 23, 19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, |
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83 41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48, |
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84 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32 |
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85 }; |
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86 |
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87 /* |
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88 * No E box is used, as it's replaced by some ANDs, shifts, and ORs. |
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89 */ |
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90 |
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91 static unsigned char u_sbox[8][64]; |
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92 static unsigned char sbox[8][64] = { |
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93 { |
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94 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7, |
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95 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8, |
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96 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0, |
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97 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 |
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98 }, |
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99 { |
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100 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10, |
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101 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5, |
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102 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15, |
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103 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 |
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104 }, |
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105 { |
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106 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8, |
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107 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1, |
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108 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7, |
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109 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 |
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110 }, |
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111 { |
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112 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15, |
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113 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9, |
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114 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4, |
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115 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
116 }, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
117 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
118 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
119 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
120 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
121 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
122 }, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
123 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
124 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
125 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
126 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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127 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
128 }, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
129 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
130 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
131 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
132 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
133 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
134 }, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
135 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
136 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
137 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
138 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
139 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
140 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
141 }; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
142 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
143 static unsigned char un_pbox[32]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
144 static unsigned char pbox[32] = { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
145 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
146 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
147 }; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
148 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
149 static unsigned int bits32[32] = |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
150 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
151 0x80000000, 0x40000000, 0x20000000, 0x10000000, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
152 0x08000000, 0x04000000, 0x02000000, 0x01000000, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
153 0x00800000, 0x00400000, 0x00200000, 0x00100000, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
154 0x00080000, 0x00040000, 0x00020000, 0x00010000, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
155 0x00008000, 0x00004000, 0x00002000, 0x00001000, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
156 0x00000800, 0x00000400, 0x00000200, 0x00000100, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
157 0x00000080, 0x00000040, 0x00000020, 0x00000010, |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
158 0x00000008, 0x00000004, 0x00000002, 0x00000001 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
159 }; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
160 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
161 static unsigned char bits8[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
162 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
163 static unsigned int saltbits; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
164 static int old_salt; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
165 static unsigned int *bits28, *bits24; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
166 static unsigned char init_perm[64], final_perm[64]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
167 static unsigned int en_keysl[16], en_keysr[16]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
168 static unsigned int de_keysl[16], de_keysr[16]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
169 static int des_initialised = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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170 static unsigned char m_sbox[4][4096]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
171 static unsigned int psbox[4][256]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
172 static unsigned int ip_maskl[8][256], ip_maskr[8][256]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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173 static unsigned int fp_maskl[8][256], fp_maskr[8][256]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
174 static unsigned int key_perm_maskl[8][128], key_perm_maskr[8][128]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
175 static unsigned int comp_maskl[8][128], comp_maskr[8][128]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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176 static unsigned int old_rawkey0, old_rawkey1; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
177 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
178 static unsigned char ascii64[] = |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
179 "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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180 /* 0000000000111111111122222222223333333333444444444455555555556666 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
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181 /* 0123456789012345678901234567890123456789012345678901234567890123 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
182 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
183 static __inline int |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
184 ascii_to_bin(ch) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
185 char ch; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
186 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
187 if (ch > 'z') |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
188 return(0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
189 if (ch >= 'a') |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
190 return(ch - 'a' + 38); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
191 if (ch > 'Z') |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
192 return(0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
193 if (ch >= 'A') |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
194 return(ch - 'A' + 12); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
195 if (ch > '9') |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
196 return(0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
197 if (ch >= '.') |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
198 return(ch - '.'); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
199 return(0); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
200 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
201 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
202 static void |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
203 des_init() |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
204 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
205 int i, j, b, k, inbit, obit; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
206 unsigned int *p, *il, *ir, *fl, *fr; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
207 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
208 old_rawkey0 = old_rawkey1 = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
209 saltbits = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
210 old_salt = 0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
211 bits24 = (bits28 = bits32 + 4) + 4; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
212 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
213 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
214 * Invert the S-boxes, reordering the input bits. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
215 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
216 for (i = 0; i < 8; i++) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
217 for (j = 0; j < 64; j++) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
218 b = (j & 0x20) | ((j & 1) << 4) | ((j >> 1) & 0xf); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
219 u_sbox[i][j] = sbox[i][b]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
220 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
221 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
222 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
223 * Convert the inverted S-boxes into 4 arrays of 8 bits. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
224 * Each will handle 12 bits of the S-box input. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
225 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
226 for (b = 0; b < 4; b++) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
227 for (i = 0; i < 64; i++) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
228 for (j = 0; j < 64; j++) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
229 m_sbox[b][(i << 6) | j] = |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
230 (u_sbox[(b << 1)][i] << 4) | |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
231 u_sbox[(b << 1) + 1][j]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
232 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
233 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
234 * Set up the initial & final permutations into a useful form, and |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
235 * initialise the inverted key permutation. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
236 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
237 for (i = 0; i < 64; i++) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
238 init_perm[final_perm[i] = IP[i] - 1] = i; |
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parents:
diff
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239 inv_key_perm[i] = 255; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
240 } |
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parents:
diff
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|
241 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
242 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
243 * Invert the key permutation and initialise the inverted key |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
244 * compression permutation. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
245 */ |
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parents:
diff
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|
246 for (i = 0; i < 56; i++) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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247 inv_key_perm[key_perm[i] - 1] = i; |
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parents:
diff
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248 inv_comp_perm[i] = 255; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
249 } |
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parents:
diff
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|
250 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
251 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
252 * Invert the key compression permutation. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
253 */ |
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John "Elwin" Edwards
parents:
diff
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|
254 for (i = 0; i < 48; i++) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
255 inv_comp_perm[comp_perm[i] - 1] = i; |
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John "Elwin" Edwards
parents:
diff
changeset
|
256 } |
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diff
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|
257 |
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diff
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|
258 /* |
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259 * Set up the OR-mask arrays for the initial and final permutations, |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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260 * and for the key initial and compression permutations. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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261 */ |
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262 for (k = 0; k < 8; k++) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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263 for (i = 0; i < 256; i++) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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264 *(il = &ip_maskl[k][i]) = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
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265 *(ir = &ip_maskr[k][i]) = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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266 *(fl = &fp_maskl[k][i]) = 0; |
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John "Elwin" Edwards
parents:
diff
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267 *(fr = &fp_maskr[k][i]) = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
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268 for (j = 0; j < 8; j++) { |
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269 inbit = 8 * k + j; |
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parents:
diff
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|
270 if (i & bits8[j]) { |
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parents:
diff
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271 if ((obit = init_perm[inbit]) < 32) |
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diff
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272 *il |= bits32[obit]; |
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parents:
diff
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273 else |
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parents:
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|
274 *ir |= bits32[obit-32]; |
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parents:
diff
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275 if ((obit = final_perm[inbit]) < 32) |
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parents:
diff
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276 *fl |= bits32[obit]; |
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diff
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|
277 else |
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278 *fr |= bits32[obit - 32]; |
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parents:
diff
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|
279 } |
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parents:
diff
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|
280 } |
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parents:
diff
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|
281 } |
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parents:
diff
changeset
|
282 for (i = 0; i < 128; i++) { |
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parents:
diff
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283 *(il = &key_perm_maskl[k][i]) = 0; |
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parents:
diff
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284 *(ir = &key_perm_maskr[k][i]) = 0; |
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parents:
diff
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|
285 for (j = 0; j < 7; j++) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
286 inbit = 8 * k + j; |
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parents:
diff
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|
287 if (i & bits8[j + 1]) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
288 if ((obit = inv_key_perm[inbit]) == 255) |
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parents:
diff
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|
289 continue; |
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parents:
diff
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|
290 if (obit < 28) |
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parents:
diff
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|
291 *il |= bits28[obit]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
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|
292 else |
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|
293 *ir |= bits28[obit - 28]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
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|
294 } |
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parents:
diff
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|
295 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
296 *(il = &comp_maskl[k][i]) = 0; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
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297 *(ir = &comp_maskr[k][i]) = 0; |
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diff
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298 for (j = 0; j < 7; j++) { |
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parents:
diff
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299 inbit = 7 * k + j; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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diff
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|
300 if (i & bits8[j + 1]) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
301 if ((obit=inv_comp_perm[inbit]) == 255) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
302 continue; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
303 if (obit < 24) |
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parents:
diff
changeset
|
304 *il |= bits24[obit]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
305 else |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
306 *ir |= bits24[obit - 24]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
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|
307 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
308 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
309 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
310 } |
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John "Elwin" Edwards
parents:
diff
changeset
|
311 |
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John "Elwin" Edwards
parents:
diff
changeset
|
312 /* |
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John "Elwin" Edwards
parents:
diff
changeset
|
313 * Invert the P-box permutation, and convert into OR-masks for |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
314 * handling the output of the S-box arrays setup above. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
315 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
316 for (i = 0; i < 32; i++) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
317 un_pbox[pbox[i] - 1] = i; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
318 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
319 for (b = 0; b < 4; b++) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
320 for (i = 0; i < 256; i++) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
321 *(p = &psbox[b][i]) = 0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
322 for (j = 0; j < 8; j++) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
323 if (i & bits8[j]) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
324 *p |= bits32[un_pbox[8 * b + j]]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
325 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
326 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
327 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
328 des_initialised = 1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
329 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
330 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
331 static void |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
332 setup_salt(salt) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
333 int salt; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
334 { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
335 unsigned int obit, saltbit; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
336 int i; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
337 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
338 if (salt == old_salt) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
339 return; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
340 old_salt = salt; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
341 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
342 saltbits = 0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
343 saltbit = 1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
344 obit = 0x800000; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
345 for (i = 0; i < 24; i++) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
346 if (salt & saltbit) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
347 saltbits |= obit; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
348 saltbit <<= 1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
349 obit >>= 1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
350 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
351 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
352 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
353 static int |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
354 des_setkey(key) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
355 const char *key; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
356 { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
357 unsigned int k0, k1, rawkey0, rawkey1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
358 int shifts, round; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
359 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
360 if (!des_initialised) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
361 des_init(); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
362 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
363 rawkey0 = md_ntohl(*(unsigned int *) key); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
364 rawkey1 = md_ntohl(*(unsigned int *) (key + 4)); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
365 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
366 if ((rawkey0 | rawkey1) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
367 && rawkey0 == old_rawkey0 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
368 && rawkey1 == old_rawkey1) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
369 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
370 * Already setup for this key. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
371 * This optimisation fails on a zero key (which is weak and |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
372 * has bad parity anyway) in order to simplify the starting |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
373 * conditions. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
374 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
375 return(0); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
376 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
377 old_rawkey0 = rawkey0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
378 old_rawkey1 = rawkey1; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
379 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
380 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
381 * Do key permutation and split into two 28-bit subkeys. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
382 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
383 k0 = key_perm_maskl[0][rawkey0 >> 25] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
384 | key_perm_maskl[1][(rawkey0 >> 17) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
385 | key_perm_maskl[2][(rawkey0 >> 9) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
386 | key_perm_maskl[3][(rawkey0 >> 1) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
387 | key_perm_maskl[4][rawkey1 >> 25] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
388 | key_perm_maskl[5][(rawkey1 >> 17) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
389 | key_perm_maskl[6][(rawkey1 >> 9) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
390 | key_perm_maskl[7][(rawkey1 >> 1) & 0x7f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
391 k1 = key_perm_maskr[0][rawkey0 >> 25] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
392 | key_perm_maskr[1][(rawkey0 >> 17) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
393 | key_perm_maskr[2][(rawkey0 >> 9) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
394 | key_perm_maskr[3][(rawkey0 >> 1) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
395 | key_perm_maskr[4][rawkey1 >> 25] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
396 | key_perm_maskr[5][(rawkey1 >> 17) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
397 | key_perm_maskr[6][(rawkey1 >> 9) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
398 | key_perm_maskr[7][(rawkey1 >> 1) & 0x7f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
399 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
400 * Rotate subkeys and do compression permutation. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
401 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
402 shifts = 0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
403 for (round = 0; round < 16; round++) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
404 unsigned int t0, t1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
405 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
406 shifts += key_shifts[round]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
407 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
408 t0 = (k0 << shifts) | (k0 >> (28 - shifts)); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
409 t1 = (k1 << shifts) | (k1 >> (28 - shifts)); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
410 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
411 de_keysl[15 - round] = |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
412 en_keysl[round] = comp_maskl[0][(t0 >> 21) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
413 | comp_maskl[1][(t0 >> 14) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
414 | comp_maskl[2][(t0 >> 7) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
415 | comp_maskl[3][t0 & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
416 | comp_maskl[4][(t1 >> 21) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
417 | comp_maskl[5][(t1 >> 14) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
418 | comp_maskl[6][(t1 >> 7) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
419 | comp_maskl[7][t1 & 0x7f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
420 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
421 de_keysr[15 - round] = |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
422 en_keysr[round] = comp_maskr[0][(t0 >> 21) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
423 | comp_maskr[1][(t0 >> 14) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
424 | comp_maskr[2][(t0 >> 7) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
425 | comp_maskr[3][t0 & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
426 | comp_maskr[4][(t1 >> 21) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
427 | comp_maskr[5][(t1 >> 14) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
428 | comp_maskr[6][(t1 >> 7) & 0x7f] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
429 | comp_maskr[7][t1 & 0x7f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
430 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
431 return(0); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
432 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
433 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
434 static int |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
435 do_des(l_in, r_in, l_out, r_out, count) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
436 unsigned int l_in, r_in, *l_out, *r_out; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
437 int count; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
438 { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
439 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
440 * l_in, r_in, l_out, and r_out are in pseudo-"big-endian" format. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
441 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
442 unsigned int l, r, *kl, *kr, *kl1, *kr1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
443 unsigned int f = 0, r48l, r48r; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
444 int round; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
445 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
446 if (count == 0) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
447 return(1); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
448 } else if (count > 0) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
449 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
450 * Encrypting |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
451 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
452 kl1 = en_keysl; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
453 kr1 = en_keysr; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
454 } else { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
455 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
456 * Decrypting |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
457 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
458 count = -count; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
459 kl1 = de_keysl; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
460 kr1 = de_keysr; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
461 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
462 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
463 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
464 * Do initial permutation (IP). |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
465 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
466 l = ip_maskl[0][l_in >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
467 | ip_maskl[1][(l_in >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
468 | ip_maskl[2][(l_in >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
469 | ip_maskl[3][l_in & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
470 | ip_maskl[4][r_in >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
471 | ip_maskl[5][(r_in >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
472 | ip_maskl[6][(r_in >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
473 | ip_maskl[7][r_in & 0xff]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
474 r = ip_maskr[0][l_in >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
475 | ip_maskr[1][(l_in >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
476 | ip_maskr[2][(l_in >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
477 | ip_maskr[3][l_in & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
478 | ip_maskr[4][r_in >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
479 | ip_maskr[5][(r_in >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
480 | ip_maskr[6][(r_in >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
481 | ip_maskr[7][r_in & 0xff]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
482 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
483 while (count--) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
484 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
485 * Do each round. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
486 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
487 kl = kl1; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
488 kr = kr1; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
489 round = 16; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
490 while (round--) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
491 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
492 * Expand R to 48 bits (simulate the E-box). |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
493 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
494 r48l = ((r & 0x00000001) << 23) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
495 | ((r & 0xf8000000) >> 9) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
496 | ((r & 0x1f800000) >> 11) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
497 | ((r & 0x01f80000) >> 13) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
498 | ((r & 0x001f8000) >> 15); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
499 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
500 r48r = ((r & 0x0001f800) << 7) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
501 | ((r & 0x00001f80) << 5) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
502 | ((r & 0x000001f8) << 3) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
503 | ((r & 0x0000001f) << 1) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
504 | ((r & 0x80000000) >> 31); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
505 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
506 * Do salting for crypt() and friends, and |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
507 * XOR with the permuted key. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
508 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
509 f = (r48l ^ r48r) & saltbits; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
510 r48l ^= f ^ *kl++; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
511 r48r ^= f ^ *kr++; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
512 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
513 * Do sbox lookups (which shrink it back to 32 bits) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
514 * and do the pbox permutation at the same time. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
515 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
516 f = psbox[0][m_sbox[0][r48l >> 12]] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
517 | psbox[1][m_sbox[1][r48l & 0xfff]] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
518 | psbox[2][m_sbox[2][r48r >> 12]] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
519 | psbox[3][m_sbox[3][r48r & 0xfff]]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
520 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
521 * Now that we've permuted things, complete f(). |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
522 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
523 f ^= l; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
524 l = r; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
525 r = f; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
526 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
527 r = l; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
528 l = f; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
529 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
530 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
531 * Do final permutation (inverse of IP). |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
532 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
533 *l_out = fp_maskl[0][l >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
534 | fp_maskl[1][(l >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
535 | fp_maskl[2][(l >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
536 | fp_maskl[3][l & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
537 | fp_maskl[4][r >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
538 | fp_maskl[5][(r >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
539 | fp_maskl[6][(r >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
540 | fp_maskl[7][r & 0xff]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
541 *r_out = fp_maskr[0][l >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
542 | fp_maskr[1][(l >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
543 | fp_maskr[2][(l >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
544 | fp_maskr[3][l & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
545 | fp_maskr[4][r >> 24] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
546 | fp_maskr[5][(r >> 16) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
547 | fp_maskr[6][(r >> 8) & 0xff] |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
548 | fp_maskr[7][r & 0xff]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
549 return(0); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
550 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
551 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
552 static int |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
553 des_cipher(in, out, salt, count) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
554 const char *in; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
555 char *out; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
556 int salt; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
557 int count; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
558 { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
559 unsigned int l_out, r_out, rawl, rawr; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
560 unsigned int x[2]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
561 int retval; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
562 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
563 if (!des_initialised) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
564 des_init(); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
565 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
566 setup_salt(salt); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
567 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
568 memcpy(x, in, sizeof x); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
569 rawl = md_ntohl(x[0]); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
570 rawr = md_ntohl(x[1]); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
571 retval = do_des(rawl, rawr, &l_out, &r_out, count); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
572 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
573 x[0] = md_htonl(l_out); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
574 x[1] = md_htonl(r_out); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
575 memcpy(out, x, sizeof x); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
576 return(retval); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
577 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
578 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
579 char * |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
580 xcrypt(key, setting) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
581 const char *key; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
582 const char *setting; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
583 { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
584 int i; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
585 unsigned int count, salt, l, r0, r1, keybuf[2]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
586 unsigned char *p, *q; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
587 static unsigned char output[21]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
588 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
589 if (!des_initialised) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
590 des_init(); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
591 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
592 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
593 * Copy the key, shifting each character up by one bit |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
594 * and padding with zeros. |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
595 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
596 q = (unsigned char *) keybuf; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
597 while ((q - (unsigned char *) keybuf) < sizeof(keybuf)) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
598 if ((*q++ = *key << 1)) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
599 key++; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
600 } |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
601 if (des_setkey((unsigned char *) keybuf)) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
602 return(NULL); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
603 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
604 if (*setting == _PASSWORD_EFMT1) { |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
605 /* |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
606 * "new"-style: |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
607 * setting - underscore, 4 bytes of count, 4 bytes of salt |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
608 * key - unlimited characters |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
609 */ |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
610 for (i = 1, count = 0; i < 5; i++) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
611 count |= ascii_to_bin(setting[i]) << (i - 1) * 6; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
612 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
613 for (i = 5, salt = 0; i < 9; i++) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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614 salt |= ascii_to_bin(setting[i]) << (i - 5) * 6; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
615 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
616 while (*key) { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
617 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
618 * Encrypt the key with itself. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
619 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
620 if (des_cipher((unsigned char*)keybuf, (unsigned char*)keybuf, 0, 1)) |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
621 return(NULL); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
622 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
623 * And XOR with the next 8 characters of the key. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
624 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
625 q = (unsigned char *) keybuf; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
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626 while (((q - (unsigned char *) keybuf) < sizeof(keybuf)) && |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
627 *key) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
628 *q++ ^= *key++ << 1; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
629 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
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630 if (des_setkey((unsigned char *) keybuf)) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
631 return(NULL); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
632 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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633 strncpy((char *)output, setting, 9); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
634 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
635 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
636 * Double check that we weren't given a short setting. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
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637 * If we were, the above code will probably have created |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
638 * wierd values for count and salt, but we don't really care. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
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639 * Just make sure the output string doesn't have an extra |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
640 * NUL in it. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
641 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
642 output[9] = '\0'; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
643 p = output + strlen((const char *)output); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
644 } else { |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
645 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
646 * "old"-style: |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
647 * setting - 2 bytes of salt |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
648 * key - up to 8 characters |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
649 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
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|
650 count = 25; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
651 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
652 salt = (ascii_to_bin(setting[1]) << 6) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
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653 | ascii_to_bin(setting[0]); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
654 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
655 output[0] = setting[0]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
656 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
657 * If the encrypted password that the salt was extracted from |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
658 * is only 1 character long, the salt will be corrupted. We |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
659 * need to ensure that the output string doesn't have an extra |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
660 * NUL in it! |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
661 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
662 output[1] = setting[1] ? setting[1] : output[0]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
663 |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
664 p = output + 2; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
665 } |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
666 setup_salt(salt); |
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John "Elwin" Edwards
parents:
diff
changeset
|
667 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
668 * Do it. |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
669 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
670 if (do_des(0, 0, &r0, &r1, count)) |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
671 return(NULL); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff
changeset
|
672 /* |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
673 * Now encode the result... |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
674 */ |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
675 l = (r0 >> 8); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
676 *p++ = ascii64[(l >> 18) & 0x3f]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
677 *p++ = ascii64[(l >> 12) & 0x3f]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
678 *p++ = ascii64[(l >> 6) & 0x3f]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
679 *p++ = ascii64[l & 0x3f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
680 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
681 l = (r0 << 16) | ((r1 >> 16) & 0xffff); |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
682 *p++ = ascii64[(l >> 18) & 0x3f]; |
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Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
683 *p++ = ascii64[(l >> 12) & 0x3f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
684 *p++ = ascii64[(l >> 6) & 0x3f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
685 *p++ = ascii64[l & 0x3f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
686 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
687 l = r1 << 2; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
688 *p++ = ascii64[(l >> 12) & 0x3f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
689 *p++ = ascii64[(l >> 6) & 0x3f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
690 *p++ = ascii64[l & 0x3f]; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
691 *p = 0; |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
692 |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
693 return((char *)output); |
e6179860cb76
Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff
changeset
|
694 } |