2 * Copyright (c) 2009, Sun Microsystems, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * - Redistributions of source code must retain the above copyright notice,
8 * this list of conditions and the following disclaimer.
9 * - Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation
11 * and/or other materials provided with the distribution.
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13 * contributors may be used to endorse or promote products derived
14 * from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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26 * POSSIBILITY OF SUCH DAMAGE.
29 * des_crypt.c, DES encryption library routines
30 * Copyright (C) 1986, Sun Microsystems, Inc.
34 #include <sys/types.h>
35 #include <rpc/types.h>
36 #include <rpc/des_crypt.h>
40 static char sccsid
[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
43 //#include <sys/cdefs.h>
45 static int common_crypt( char *, char *, unsigned, unsigned, struct desparams
* );
46 int (*__des_crypt_LOCAL
)() = 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(key
, buf
, len
, mode
, ivec
)
86 dp
.UDES
.UDES_buf
= buf
;
91 COPY8(ivec
, dp
.des_ivec
);
92 err
= common_crypt(key
, buf
, len
, mode
, &dp
);
93 COPY8(dp
.des_ivec
, ivec
);
102 ecb_crypt(key
, buf
, len
, mode
)
111 dp
.UDES
.UDES_buf
= buf
;
116 return(common_crypt(key
, buf
, len
, mode
, &dp
));
122 * Common code to cbc_crypt() & ecb_crypt()
125 common_crypt(key
, buf
, len
, mode
, desp
)
130 struct desparams
*desp
;
134 if ((len
% 8) != 0 || len
> DES_MAXDATA
) {
135 return(DESERR_BADPARAM
);
138 ((mode
& DES_DIRMASK
) == DES_ENCRYPT
) ? ENCRYPT
: DECRYPT
;
140 desdev
= mode
& DES_DEVMASK
;
141 COPY8(key
, desp
->des_key
);
145 if (__des_crypt_LOCAL
!= NULL
) {
146 if (!__des_crypt_LOCAL(buf
, len
, desp
)) {
147 return (DESERR_HWERROR
);
150 if (!_des_crypt_call(buf
, len
, desp
)) {
151 return (DESERR_HWERROR
);
154 return(desdev
== DES_SW
? DESERR_NONE
: DESERR_NOHWDEVICE
);