source: rtems-libbsd/freebsd/lib/libc/rpc/des_crypt.c @ 60b1d40

5-freebsd-12freebsd-9.3
Last change on this file since 60b1d40 was 60b1d40, checked in by Sebastian Huber <sebastian.huber@…>, on Jun 9, 2016 at 8:23:57 AM

RPC(3): Import from FreeBSD

  • Property mode set to 100644
File size: 4.0 KB
Line 
1#include <machine/rtems-bsd-user-space.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 * des_crypt.c, DES encryption library routines
32 * Copyright (C) 1986, Sun Microsystems, Inc.
33 */
34
35#include <sys/types.h>
36#include <rpc/des_crypt.h>
37#include <rpc/des.h>
38
39#if defined(LIBC_SCCS) && !defined(lint)
40static char sccsid[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
41#endif
42#include <sys/cdefs.h>
43__FBSDID("$FreeBSD$");
44
45static int common_crypt( char *, char *, unsigned, unsigned, struct desparams * );
46int (*__des_crypt_LOCAL)() = 0;
47extern int _des_crypt_call(char *, int, struct desparams *);
48/*
49 * Copy 8 bytes
50 */
51#define COPY8(src, dst) { \
52        char *a = (char *) dst; \
53        char *b = (char *) src; \
54        *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
55        *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
56}
57 
58/*
59 * Copy multiple of 8 bytes
60 */
61#define DESCOPY(src, dst, len) { \
62        char *a = (char *) dst; \
63        char *b = (char *) src; \
64        int i; \
65        for (i = (int) len; i > 0; i -= 8) { \
66                *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
67                *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
68        } \
69}
70
71/*
72 * CBC mode encryption
73 */
74int
75cbc_crypt(key, buf, len, mode, ivec)
76        char *key;
77        char *buf;
78        unsigned len;
79        unsigned mode;
80        char *ivec;     
81{
82        int err;
83        struct desparams dp;
84
85#ifdef BROKEN_DES
86        dp.UDES.UDES_buf = buf;
87        dp.des_mode = ECB;
88#else
89        dp.des_mode = CBC;
90#endif
91        COPY8(ivec, dp.des_ivec);
92        err = common_crypt(key, buf, len, mode, &dp);
93        COPY8(dp.des_ivec, ivec);
94        return(err);
95}
96
97
98/*
99 * ECB mode encryption
100 */
101int
102ecb_crypt(key, buf, len, mode)
103        char *key;
104        char *buf;
105        unsigned len;
106        unsigned mode;
107{
108        struct desparams dp;
109
110#ifdef BROKEN_DES
111        dp.UDES.UDES_buf = buf;
112        dp.des_mode = CBC;
113#else
114        dp.des_mode = ECB;
115#endif
116        return(common_crypt(key, buf, len, mode, &dp));
117}
118
119
120
121/*
122 * Common code to cbc_crypt() & ecb_crypt()
123 */
124static int
125common_crypt(key, buf, len, mode, desp) 
126        char *key;     
127        char *buf;
128        unsigned len;
129        unsigned mode;
130        struct desparams *desp;
131{
132        int desdev;
133
134        if ((len % 8) != 0 || len > DES_MAXDATA) {
135                return(DESERR_BADPARAM);
136        }
137        desp->des_dir =
138                ((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;
139
140        desdev = mode & DES_DEVMASK;
141        COPY8(key, desp->des_key);
142        /*
143         * software
144         */
145        if (__des_crypt_LOCAL != NULL) {
146                if (!__des_crypt_LOCAL(buf, len, desp)) {
147                        return (DESERR_HWERROR);
148                }
149        } else {
150                if (!_des_crypt_call(buf, len, desp)) {
151                        return (DESERR_HWERROR);
152                }
153        }
154        return(desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE);
155}
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