2 * Copyright (c) 2009, Sun Microsystems, Inc.
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6 * modification, are permitted provided that the following conditions are met:
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8 * this list of conditions and the following disclaimer.
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29 * des_crypt.c, DES encryption library routines
30 * Copyright (C) 1986, Sun Microsystems, Inc.
33 #include <sys/types.h>
34 #include <rpc/des_crypt.h>
37 #if defined(LIBC_SCCS) && !defined(lint)
38 static char sccsid[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
43 static int common_crypt( char *, char *, unsigned, unsigned, struct desparams * );
44 int (*__des_crypt_LOCAL)(char *, unsigned, struct desparams *) = 0;
45 extern int _des_crypt_call(char *, int, struct desparams *);
49 #define COPY8(src, dst) { \
50 char *a = (char *) dst; \
51 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 char *a = (char *) dst; \
61 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(char *key, char *buf, unsigned len, unsigned mode, char *ivec)
79 dp.UDES.UDES_buf = buf;
84 COPY8(ivec, dp.des_ivec);
85 err = common_crypt(key, buf, len, mode, &dp);
86 COPY8(dp.des_ivec, ivec);
95 ecb_crypt(char *key, char *buf, unsigned len, unsigned mode)
100 dp.UDES.UDES_buf = buf;
105 return(common_crypt(key, buf, len, mode, &dp));
111 * Common code to cbc_crypt() & ecb_crypt()
114 common_crypt(char *key, char *buf, unsigned len, unsigned mode,
115 struct desparams *desp)
119 if ((len % 8) != 0 || len > DES_MAXDATA) {
120 return(DESERR_BADPARAM);
123 ((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;
125 desdev = mode & DES_DEVMASK;
126 COPY8(key, desp->des_key);
130 if (__des_crypt_LOCAL != NULL) {
131 if (!__des_crypt_LOCAL(buf, len, desp)) {
132 return (DESERR_HWERROR);
135 if (!_des_crypt_call(buf, len, desp)) {
136 return (DESERR_HWERROR);
139 return(desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE);