2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2009, Sun Microsystems, Inc.
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31 * des_crypt.c, DES encryption library routines
32 * Copyright (C) 1986, Sun Microsystems, Inc.
35 #include <sys/types.h>
36 #include <rpc/des_crypt.h>
39 #if defined(LIBC_SCCS) && !defined(lint)
40 static char sccsid[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 static int common_crypt( char *, char *, unsigned, unsigned, struct desparams * );
46 int (*__des_crypt_LOCAL)(char *, unsigned, struct desparams *) = 0;
47 extern int _des_crypt_call(char *, int, struct desparams *);
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++; \
59 * Copy multiple of 8 bytes
61 #define DESCOPY(src, dst, len) { \
62 char *a = (char *) dst; \
63 char *b = (char *) src; \
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++; \
75 cbc_crypt(char *key, char *buf, unsigned len, unsigned mode, char *ivec)
81 dp.UDES.UDES_buf = buf;
86 COPY8(ivec, dp.des_ivec);
87 err = common_crypt(key, buf, len, mode, &dp);
88 COPY8(dp.des_ivec, ivec);
97 ecb_crypt(char *key, char *buf, unsigned len, unsigned mode)
102 dp.UDES.UDES_buf = buf;
107 return(common_crypt(key, buf, len, mode, &dp));
113 * Common code to cbc_crypt() & ecb_crypt()
116 common_crypt(char *key, char *buf, unsigned len, unsigned mode,
117 struct desparams *desp)
121 if ((len % 8) != 0 || len > DES_MAXDATA) {
122 return(DESERR_BADPARAM);
125 ((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;
127 desdev = mode & DES_DEVMASK;
128 COPY8(key, desp->des_key);
132 if (__des_crypt_LOCAL != NULL) {
133 if (!__des_crypt_LOCAL(buf, len, desp)) {
134 return (DESERR_HWERROR);
137 if (!_des_crypt_call(buf, len, desp)) {
138 return (DESERR_HWERROR);
141 return(desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE);