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.
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.
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.
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.
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.
25 * Sun Microsystems, Inc.
27 * Mountain View, California 94043
30 * des_crypt.c, DES encryption library routines
31 * Copyright (C) 1986, Sun Microsystems, Inc.
34 #include <sys/types.h>
35 #include <rpc/des_crypt.h>
39 /* from: static char sccsid[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI"; */
40 static const char rcsid[] = "$FreeBSD: src/lib/libc/rpc/des_crypt.c,v 1.3 1999/08/28 00:00:38 peter Exp $";
43 static int common_crypt __P(( char *, char *, register unsigned, unsigned, struct desparams * ));
44 int (*__des_crypt_LOCAL)() = 0;
45 extern _des_crypt_call __P(( char *, int, struct desparams * ));
49 #define COPY8(src, dst) { \
50 register char *a = (char *) dst; \
51 register char *b = (char *) src; \
52 *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
53 *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
57 * Copy multiple of 8 bytes
59 #define DESCOPY(src, dst, len) { \
60 register char *a = (char *) dst; \
61 register char *b = (char *) src; \
63 for (i = (int) len; i > 0; i -= 8) { \
64 *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
65 *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
73 cbc_crypt(key, buf, len, mode, ivec)
84 dp.UDES.UDES_buf = buf;
89 COPY8(ivec, dp.des_ivec);
90 err = common_crypt(key, buf, len, mode, &dp);
91 COPY8(dp.des_ivec, ivec);
100 ecb_crypt(key, buf, len, mode)
109 dp.UDES.UDES_buf = buf;
114 return(common_crypt(key, buf, len, mode, &dp));
120 * Common code to cbc_crypt() & ecb_crypt()
123 common_crypt(key, buf, len, mode, desp)
126 register unsigned len;
128 register struct desparams *desp;
132 if ((len % 8) != 0 || len > DES_MAXDATA) {
133 return(DESERR_BADPARAM);
136 ((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;
138 desdev = mode & DES_DEVMASK;
139 COPY8(key, desp->des_key);
143 if (__des_crypt_LOCAL != NULL) {
144 if (!__des_crypt_LOCAL(buf, len, desp)) {
145 return (DESERR_HWERROR);
148 if (!_des_crypt_call(buf, len, desp)) {
149 return (DESERR_HWERROR);
152 return(desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE);