des_soft.c revision 136581 
1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 */
29
30#if defined(LIBC_SCCS) && !defined(lint)
31static char sccsid[] = "@(#)des_soft.c	2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
32#endif
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: head/lib/libc/rpc/des_soft.c 136581 2004-10-16 06:11:35Z obrien $");
35
36/*
37 * Table giving odd parity in the low bit for ASCII characters
38 */
39static char partab[128] = {
40	0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07,
41	0x08, 0x08, 0x0b, 0x0b, 0x0d, 0x0d, 0x0e, 0x0e,
42	0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
43	0x19, 0x19, 0x1a, 0x1a, 0x1c, 0x1c, 0x1f, 0x1f,
44	0x20, 0x20, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26,
45	0x29, 0x29, 0x2a, 0x2a, 0x2c, 0x2c, 0x2f, 0x2f,
46	0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37,
47	0x38, 0x38, 0x3b, 0x3b, 0x3d, 0x3d, 0x3e, 0x3e,
48	0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
49	0x49, 0x49, 0x4a, 0x4a, 0x4c, 0x4c, 0x4f, 0x4f,
50	0x51, 0x51, 0x52, 0x52, 0x54, 0x54, 0x57, 0x57,
51	0x58, 0x58, 0x5b, 0x5b, 0x5d, 0x5d, 0x5e, 0x5e,
52	0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67,
53	0x68, 0x68, 0x6b, 0x6b, 0x6d, 0x6d, 0x6e, 0x6e,
54	0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
55	0x79, 0x79, 0x7a, 0x7a, 0x7c, 0x7c, 0x7f, 0x7f,
56};
57
58/*
59 * Add odd parity to low bit of 8 byte key
60 */
61void
62des_setparity(p)
63	char *p;
64{
65	int i;
66
67	for (i = 0; i < 8; i++) {
68		*p = partab[*p & 0x7f];
69		p++;
70	}
71}
72