89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 2003 Michael Bretterklieber
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
||
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
|
|
* SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/cdefs.h>
|
||
|
|
__FBSDID("$FreeBSD$");
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
#include <netinet/in.h>
|
||
|
|
|
||
|
|
#include <ctype.h>
|
||
|
|
#include <err.h>
|
||
|
|
#include <md4.h>
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
#include "crypt.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NT HASH = md4(str2unicode(pw))
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* ARGSUSED */
|
||
|
|
char *
|
||
|
|
crypt_nthash(const char *pw, const char *salt __unused)
|
||
|
|
{
|
||
|
|
size_t unipwLen;
|
||
|
|
int i, j;
|
||
|
|
static char hexconvtab[] = "0123456789abcdef";
|
||
|
|
static const char *magic = "$3$";
|
||
|
|
static char passwd[120];
|
||
|
|
u_int16_t unipw[128];
|
||
|
|
char final[MD4_SIZE*2 + 1];
|
||
|
|
u_char hash[MD4_SIZE];
|
||
|
|
const char *s;
|
||
|
|
MD4_CTX ctx;
|
||
|
|
|
||
|
|
bzero(unipw, sizeof(unipw));
|
||
|
|
/* convert to unicode (thanx Archie) */
|
||
|
|
unipwLen = 0;
|
||
|
|
for (s = pw; unipwLen < sizeof(unipw) / 2 && *s; s++)
|
||
|
|
unipw[unipwLen++] = htons(*s << 8);
|
||
|
|
|
||
|
|
/* Compute MD4 of Unicode password */
|
||
|
|
MD4Init(&ctx);
|
||
|
|
MD4Update(&ctx, (u_char *)unipw, unipwLen*sizeof(u_int16_t));
|
||
|
|
MD4Final(hash, &ctx);
|
||
|
|
|
||
|
|
for (i = j = 0; i < MD4_SIZE; i++) {
|
||
|
|
final[j++] = hexconvtab[hash[i] >> 4];
|
||
|
|
final[j++] = hexconvtab[hash[i] & 15];
|
||
|
|
}
|
||
|
|
final[j] = '\0';
|
||
|
|
|
||
|
|
strcpy(passwd, magic);
|
||
|
|
strcat(passwd, "$");
|
||
|
|
strncat(passwd, final, MD4_SIZE*2);
|
||
|
|
|
||
|
|
/* Don't leave anything around in vm they could use. */
|
||
|
|
memset(final, 0, sizeof(final));
|
||
|
|
|
||
|
|
return (passwd);
|
||
|
|
}
|