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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
/*
* DES encryption library routines
*/
#include "des_synonyms.h"
#include <sys/types.h>
#include <rpc/des_crypt.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stropts.h>
#ifdef sun
#include <sys/ioctl.h>
#include <sys/des.h>
#ifdef _KERNEL
#include <sys/conf.h>
#define getdesfd() (cdevsw[11].d_open(0, 0) ? -1 : 0)
#define ioctl(a, b, c) (cdevsw[11].d_ioctl(0, b, c, 0) ? -1 : 0)
#ifndef CRYPT
#define __des_crypt(a, b, c) 0
#endif
#else
#define getdesfd() (open("/dev/des", 0, 0))
#endif
#else
#include <des/des.h>
#endif
#include "des_soft.h"
/*
* To see if chip is installed
*/
#define UNOPENED (-2)
/*
* Copy 8 bytes
*/
#define COPY8(src, dst) { \
char *a = (char *) dst; \
char *b = (char *) src; \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
}
/*
* Copy multiple of 8 bytes
*/
#define DESCOPY(src, dst, len) { \
char *a = (char *) dst; \
char *b = (char *) src; \
int i; \
for (i = (int) len; i > 0; i -= 8) { \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
} \
}
static int common_crypt(char *, char *, unsigned, unsigned, struct desparams *);
/*
* CBC mode encryption
*/
int
cbc_crypt(char *key, char *buf, size_t len, unsigned int mode, char *ivec)
{
int err = 0;
/* EXPORT DELETE START */
struct desparams dp;
dp.des_mode = CBC;
COPY8(ivec, dp.des_ivec);
err = common_crypt(key, buf, len, mode, &dp);
COPY8(dp.des_ivec, ivec);
/* EXPORT DELETE END */
return (err);
}
/*
* ECB mode encryption
*/
int
ecb_crypt(char *key, char *buf, size_t len, unsigned int mode)
{
int ret = 0;
/* EXPORT DELETE START */
struct desparams dp;
dp.des_mode = ECB;
ret = common_crypt(key, buf, len, mode, &dp);
/* EXPORT DELETE END */
return (ret);
}
/* EXPORT DELETE START */
/*
* Common code to cbc_crypt() & ecb_crypt()
*/
static int
common_crypt(char *key, char *buf, unsigned len, unsigned mode, struct desparams *desp)
{
int desdev;
int res;
int g_desfd = UNOPENED;
if ((len % 8) != 0 || len > DES_MAXDATA) {
return (DESERR_BADPARAM);
}
desp->des_dir =
((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;
desdev = mode & DES_DEVMASK;
COPY8(key, desp->des_key);
#ifdef sun
if (desdev == DES_HW) {
if (g_desfd < 0) {
if (g_desfd == -1 || (g_desfd = getdesfd()) < 0) {
goto software; /* no hardware device */
}
}
/*
* hardware
*/
desp->des_len = len;
if (len <= DES_QUICKLEN) {
DESCOPY(buf, desp->des_data, len);
res = ioctl(g_desfd, (int)DESIOCQUICK, (char *) desp);
DESCOPY(desp->des_data, buf, len);
} else {
desp->des_buf = (u_char *) buf;
res = ioctl(g_desfd, (int)DESIOCBLOCK, (char *) desp);
}
return (res == 0 ? DESERR_NONE : DESERR_HWERROR);
}
software:
#endif
/*
* software
*/
if (!__des_crypt(buf, len, desp)) {
return (DESERR_HWERROR);
}
return (desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE);
}
/* EXPORT DELETE END */
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