1 //#include <sys/cdefs.h>
2
3 /*
4 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 * - Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 * - Neither the name of Sun Microsystems, Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30 /*
31 * Table giving odd parity in the low bit for ASCII characters
32 */
33 static char partab[128] = {
34 0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07,
35 0x08, 0x08, 0x0b, 0x0b, 0x0d, 0x0d, 0x0e, 0x0e,
36 0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
37 0x19, 0x19, 0x1a, 0x1a, 0x1c, 0x1c, 0x1f, 0x1f,
38 0x20, 0x20, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26,
39 0x29, 0x29, 0x2a, 0x2a, 0x2c, 0x2c, 0x2f, 0x2f,
40 0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37,
41 0x38, 0x38, 0x3b, 0x3b, 0x3d, 0x3d, 0x3e, 0x3e,
42 0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
43 0x49, 0x49, 0x4a, 0x4a, 0x4c, 0x4c, 0x4f, 0x4f,
44 0x51, 0x51, 0x52, 0x52, 0x54, 0x54, 0x57, 0x57,
45 0x58, 0x58, 0x5b, 0x5b, 0x5d, 0x5d, 0x5e, 0x5e,
46 0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67,
47 0x68, 0x68, 0x6b, 0x6b, 0x6d, 0x6d, 0x6e, 0x6e,
48 0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
49 0x79, 0x79, 0x7a, 0x7a, 0x7c, 0x7c, 0x7f, 0x7f,
50 };
51
52 /*
53 * Add odd parity to low bit of 8 byte key
54 */
55 void
des_setparity(p)56 des_setparity(p)
57 char *p;
58 {
59 int i;
60
61 for (i = 0; i < 8; i++) {
62 *p = partab[*p & 0x7f];
63 p++;
64 }
65 }
66