1 | /*
|
---|
2 | * UFC-crypt: ultra fast crypt(3) implementation
|
---|
3 | *
|
---|
4 | * Copyright (C) 1991, 1992, 1993, 1996 Free Software Foundation, Inc.
|
---|
5 | *
|
---|
6 | * This library is free software; you can redistribute it and/or
|
---|
7 | * modify it under the terms of the GNU Library General Public
|
---|
8 | * License as published by the Free Software Foundation; either
|
---|
9 | * version 2 of the License, or (at your option) any later version.
|
---|
10 | *
|
---|
11 | * This library is distributed in the hope that it will be useful,
|
---|
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
---|
14 | * Library General Public License for more details.
|
---|
15 | *
|
---|
16 | * You should have received a copy of the GNU Library General Public
|
---|
17 | * License along with this library; see the file COPYING.LIB. If not,
|
---|
18 | * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
---|
19 | * Boston, MA 02111-1307, USA.
|
---|
20 | *
|
---|
21 | * @(#)crypt.c 2.25 12/20/96
|
---|
22 | *
|
---|
23 | * Semiportable C version
|
---|
24 | *
|
---|
25 | */
|
---|
26 |
|
---|
27 | /* #define __USE_GNU */
|
---|
28 |
|
---|
29 | #include "ufc.h"
|
---|
30 | #include "crypt.h"
|
---|
31 | #include "crypt-private.h"
|
---|
32 |
|
---|
33 | #ifdef _UFC_32_
|
---|
34 |
|
---|
35 | /*
|
---|
36 | * 32 bit version
|
---|
37 | */
|
---|
38 |
|
---|
39 | #define SBA(sb, v) (*(long32*)((char*)(sb)+(v)))
|
---|
40 |
|
---|
41 | void
|
---|
42 | _ufc_doit_r(itr, __data, res)
|
---|
43 | ufc_long itr, *res;
|
---|
44 | struct crypt_data *__data;
|
---|
45 | {
|
---|
46 | int i;
|
---|
47 | long32 s, *k;
|
---|
48 | long32 *sb01 = (long32*)__data->sb0;
|
---|
49 | long32 *sb23 = (long32*)__data->sb2;
|
---|
50 | long32 l1, l2, r1, r2;
|
---|
51 |
|
---|
52 | l1 = (long32)res[0]; l2 = (long32)res[1];
|
---|
53 | r1 = (long32)res[2]; r2 = (long32)res[3];
|
---|
54 |
|
---|
55 | while(itr--) {
|
---|
56 | k = (long32*)__data->keysched;
|
---|
57 | for(i=8; i--; ) {
|
---|
58 | s = *k++ ^ r1;
|
---|
59 | l1 ^= SBA(sb01, s & 0xffff); l2 ^= SBA(sb01, (s & 0xffff)+4);
|
---|
60 | l1 ^= SBA(sb01, s >>= 16 ); l2 ^= SBA(sb01, (s )+4);
|
---|
61 | s = *k++ ^ r2;
|
---|
62 | l1 ^= SBA(sb23, s & 0xffff); l2 ^= SBA(sb23, (s & 0xffff)+4);
|
---|
63 | l1 ^= SBA(sb23, s >>= 16 ); l2 ^= SBA(sb23, (s )+4);
|
---|
64 |
|
---|
65 | s = *k++ ^ l1;
|
---|
66 | r1 ^= SBA(sb01, s & 0xffff); r2 ^= SBA(sb01, (s & 0xffff)+4);
|
---|
67 | r1 ^= SBA(sb01, s >>= 16 ); r2 ^= SBA(sb01, (s )+4);
|
---|
68 | s = *k++ ^ l2;
|
---|
69 | r1 ^= SBA(sb23, s & 0xffff); r2 ^= SBA(sb23, (s & 0xffff)+4);
|
---|
70 | r1 ^= SBA(sb23, s >>= 16 ); r2 ^= SBA(sb23, (s )+4);
|
---|
71 | }
|
---|
72 | s=l1; l1=r1; r1=s; s=l2; l2=r2; r2=s;
|
---|
73 | }
|
---|
74 | res[0] = l1; res[1] = l2; res[2] = r1; res[3] = r2;
|
---|
75 | }
|
---|
76 |
|
---|
77 | #endif
|
---|
78 |
|
---|
79 | #ifdef _UFC_64_
|
---|
80 |
|
---|
81 | /*
|
---|
82 | * 64 bit version
|
---|
83 | */
|
---|
84 |
|
---|
85 | #define SBA(sb, v) (*(long64*)((char*)(sb)+(v)))
|
---|
86 |
|
---|
87 | void
|
---|
88 | _ufc_doit_r(itr, __data, res)
|
---|
89 | ufc_long itr, *res;
|
---|
90 | struct crypt_data *__data;
|
---|
91 | {
|
---|
92 | int i;
|
---|
93 | long64 l, r, s, *k;
|
---|
94 | register long64 *sb01 = (long64*)__data->sb0;
|
---|
95 | register long64 *sb23 = (long64*)__data->sb2;
|
---|
96 |
|
---|
97 | l = (((long64)res[0]) << 32) | ((long64)res[1]);
|
---|
98 | r = (((long64)res[2]) << 32) | ((long64)res[3]);
|
---|
99 |
|
---|
100 | while(itr--) {
|
---|
101 | k = (long64*)__data->keysched;
|
---|
102 | for(i=8; i--; ) {
|
---|
103 | s = *k++ ^ r;
|
---|
104 | l ^= SBA(sb23, (s ) & 0xffff);
|
---|
105 | l ^= SBA(sb23, (s >>= 16) & 0xffff);
|
---|
106 | l ^= SBA(sb01, (s >>= 16) & 0xffff);
|
---|
107 | l ^= SBA(sb01, (s >>= 16) );
|
---|
108 |
|
---|
109 | s = *k++ ^ l;
|
---|
110 | r ^= SBA(sb23, (s ) & 0xffff);
|
---|
111 | r ^= SBA(sb23, (s >>= 16) & 0xffff);
|
---|
112 | r ^= SBA(sb01, (s >>= 16) & 0xffff);
|
---|
113 | r ^= SBA(sb01, (s >>= 16) );
|
---|
114 | }
|
---|
115 | s=l; l=r; r=s;
|
---|
116 | }
|
---|
117 |
|
---|
118 | res[0] = l >> 32; res[1] = l & 0xffffffff;
|
---|
119 | res[2] = r >> 32; res[3] = r & 0xffffffff;
|
---|
120 | }
|
---|
121 |
|
---|
122 | #endif |
---|