8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
143 lines
3.9 KiB
C
143 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2009, Sun Microsystems, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* des_crypt.c, DES encryption library routines
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* Copyright (C) 1986, Sun Microsystems, Inc.
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*/
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#include <sys/types.h>
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#include <rpc/des_crypt.h>
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#include <rpc/des.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI";
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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static int common_crypt( char *, char *, unsigned, unsigned, struct desparams * );
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int (*__des_crypt_LOCAL)(char *, unsigned, struct desparams *) = 0;
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extern int _des_crypt_call(char *, int, struct desparams *);
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/*
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* Copy 8 bytes
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*/
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#define COPY8(src, dst) { \
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char *a = (char *) dst; \
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char *b = (char *) src; \
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*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
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*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
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}
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/*
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* Copy multiple of 8 bytes
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*/
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#define DESCOPY(src, dst, len) { \
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char *a = (char *) dst; \
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char *b = (char *) src; \
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int i; \
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for (i = (int) len; i > 0; i -= 8) { \
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*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
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*a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \
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} \
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}
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/*
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* CBC mode encryption
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*/
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int
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cbc_crypt(char *key, char *buf, unsigned len, unsigned mode, char *ivec)
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{
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int err;
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struct desparams dp;
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#ifdef BROKEN_DES
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dp.UDES.UDES_buf = buf;
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dp.des_mode = ECB;
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#else
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dp.des_mode = CBC;
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#endif
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COPY8(ivec, dp.des_ivec);
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err = common_crypt(key, buf, len, mode, &dp);
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COPY8(dp.des_ivec, ivec);
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return(err);
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}
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/*
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* ECB mode encryption
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*/
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int
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ecb_crypt(char *key, char *buf, unsigned len, unsigned mode)
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{
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struct desparams dp;
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#ifdef BROKEN_DES
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dp.UDES.UDES_buf = buf;
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dp.des_mode = CBC;
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#else
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dp.des_mode = ECB;
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#endif
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return(common_crypt(key, buf, len, mode, &dp));
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}
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/*
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* Common code to cbc_crypt() & ecb_crypt()
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*/
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static int
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common_crypt(char *key, char *buf, unsigned len, unsigned mode,
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struct desparams *desp)
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{
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int desdev;
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if ((len % 8) != 0 || len > DES_MAXDATA) {
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return(DESERR_BADPARAM);
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}
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desp->des_dir =
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((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT;
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desdev = mode & DES_DEVMASK;
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COPY8(key, desp->des_key);
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/*
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* software
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*/
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if (__des_crypt_LOCAL != NULL) {
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if (!__des_crypt_LOCAL(buf, len, desp)) {
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return (DESERR_HWERROR);
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}
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} else {
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if (!_des_crypt_call(buf, len, desp)) {
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return (DESERR_HWERROR);
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}
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}
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return(desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE);
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}
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