xref: /freebsd/lib/libc/rpc/des_soft.c (revision d3d20c826754c093694818e42835c4ce4591a13e)
1 #if !defined(lint) && defined(SCCSIDS)
2 static char sccsid[] = "@(#)des_soft.c	2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
3 #endif
4 #include <sys/cdefs.h>
5 __FBSDID("$FreeBSD$");
6 
7 /*
8  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
9  * unrestricted use provided that this legend is included on all tape
10  * media and as a part of the software program in whole or part.  Users
11  * may copy or modify Sun RPC without charge, but are not authorized
12  * to license or distribute it to anyone else except as part of a product or
13  * program developed by the user.
14  *
15  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
16  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
17  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
18  *
19  * Sun RPC is provided with no support and without any obligation on the
20  * part of Sun Microsystems, Inc. to assist in its use, correction,
21  * modification or enhancement.
22  *
23  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
24  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
25  * OR ANY PART THEREOF.
26  *
27  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
28  * or profits or other special, indirect and consequential damages, even if
29  * Sun has been advised of the possibility of such damages.
30  *
31  * Sun Microsystems, Inc.
32  * 2550 Garcia Avenue
33  * Mountain View, California  94043
34  */
35 /*
36  * Table giving odd parity in the low bit for ASCII characters
37  */
38 static char partab[128] = {
39 	0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x07, 0x07,
40 	0x08, 0x08, 0x0b, 0x0b, 0x0d, 0x0d, 0x0e, 0x0e,
41 	0x10, 0x10, 0x13, 0x13, 0x15, 0x15, 0x16, 0x16,
42 	0x19, 0x19, 0x1a, 0x1a, 0x1c, 0x1c, 0x1f, 0x1f,
43 	0x20, 0x20, 0x23, 0x23, 0x25, 0x25, 0x26, 0x26,
44 	0x29, 0x29, 0x2a, 0x2a, 0x2c, 0x2c, 0x2f, 0x2f,
45 	0x31, 0x31, 0x32, 0x32, 0x34, 0x34, 0x37, 0x37,
46 	0x38, 0x38, 0x3b, 0x3b, 0x3d, 0x3d, 0x3e, 0x3e,
47 	0x40, 0x40, 0x43, 0x43, 0x45, 0x45, 0x46, 0x46,
48 	0x49, 0x49, 0x4a, 0x4a, 0x4c, 0x4c, 0x4f, 0x4f,
49 	0x51, 0x51, 0x52, 0x52, 0x54, 0x54, 0x57, 0x57,
50 	0x58, 0x58, 0x5b, 0x5b, 0x5d, 0x5d, 0x5e, 0x5e,
51 	0x61, 0x61, 0x62, 0x62, 0x64, 0x64, 0x67, 0x67,
52 	0x68, 0x68, 0x6b, 0x6b, 0x6d, 0x6d, 0x6e, 0x6e,
53 	0x70, 0x70, 0x73, 0x73, 0x75, 0x75, 0x76, 0x76,
54 	0x79, 0x79, 0x7a, 0x7a, 0x7c, 0x7c, 0x7f, 0x7f,
55 };
56 
57 /*
58  * Add odd parity to low bit of 8 byte key
59  */
60 void
61 des_setparity(p)
62 	char *p;
63 {
64 	int i;
65 
66 	for (i = 0; i < 8; i++) {
67 		*p = partab[*p & 0x7f];
68 		p++;
69 	}
70 }
71