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File: [cvs.NetBSD.org] / src / sys / netsmb / Attic / smb_crypt.c (download)

Revision 1.8, Sun Dec 11 12:25:16 2005 UTC (14 years, 5 months ago) by christos
Branch: MAIN
CVS Tags: yamt-x86pmap-base4, yamt-x86pmap-base3, yamt-x86pmap-base2, yamt-x86pmap-base, yamt-x86pmap, yamt-uio_vmspace-base5, yamt-uio_vmspace, yamt-splraiseipl-base5, yamt-splraiseipl-base4, yamt-splraiseipl-base3, yamt-splraiseipl-base2, yamt-splraiseipl-base, yamt-splraiseipl, yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, yamt-pdpolicy-base9, yamt-pdpolicy-base8, yamt-pdpolicy-base7, yamt-pdpolicy-base6, yamt-pdpolicy-base5, yamt-pdpolicy-base4, yamt-pdpolicy-base3, yamt-pdpolicy-base2, yamt-pdpolicy-base, yamt-pdpolicy, yamt-nfs-mp-base2, yamt-nfs-mp-base, yamt-lazymbuf-base15, yamt-lazymbuf-base14, yamt-kmem-base3, yamt-kmem-base2, yamt-kmem-base, yamt-kmem, yamt-idlelwp-base8, yamt-idlelwp, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, vmlocking2-base3, vmlocking2-base2, vmlocking2-base1, vmlocking2, vmlocking-nbase, vmlocking-base, vmlocking, thorpej-atomic-base, thorpej-atomic, simonb-timecounters-base, simonb-timecounters, simonb-timcounters-final, rpaulo-netinet-merge-pcb-base, rpaulo-netinet-merge-pcb, reinoud-bufcleanup-nbase, reinoud-bufcleanup-base, reinoud-bufcleanup, post-newlock2-merge, peter-altq-base, peter-altq, nick-net80211-sync-base, nick-net80211-sync, nick-csl-alignment-base5, nick-csl-alignment-base, nick-csl-alignment, newlock2-nbase, newlock2-base, newlock2, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, mjf-ufs-trans-base, mjf-ufs-trans, mjf-devfs-base, mjf-devfs, matt-nb4-arm-base, matt-nb4-arm, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-nbase, matt-armv6-base, matt-armv6, keiichi-mipv6-nbase, keiichi-mipv6-base, keiichi-mipv6, jmcneill-pm-base, jmcneill-pm, jmcneill-base, hpcarm-cleanup-nbase, hpcarm-cleanup-base, hpcarm-cleanup, gdamore-uart-base, gdamore-uart, elad-kernelauth-base, elad-kernelauth, cube-autoconf-base, cube-autoconf, chap-midi-nbase, chap-midi-base, chap-midi, bouyer-xeni386-nbase, bouyer-xeni386-merge1, bouyer-xeni386-base, bouyer-xeni386, bouyer-xenamd64-base2, bouyer-xenamd64-base, bouyer-xenamd64, ad-socklock-base1, ad-audiomp-base, ad-audiomp, abandoned-netbsd-4-base, abandoned-netbsd-4
Branch point for: yamt-nfs-mp, wrstuden-revivesa, simonb-wapbl, mjf-devfs2
Changes since 1.7: +2 -2 lines

merge ktrace-lwp.

/*	$NetBSD: smb_crypt.c,v 1.8 2005/12/11 12:25:16 christos Exp $	*/

/*
 * Copyright (c) 2000-2001, Boris Popov
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by Boris Popov.
 * 4. Neither the name of the author nor the names of any co-contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * 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.
 *
 * FreeBSD: src/sys/netsmb/smb_crypt.c,v 1.3 2001/08/21 08:07:18 bp Exp
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: smb_crypt.c,v 1.8 2005/12/11 12:25:16 christos Exp $");

#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/proc.h>
#include <sys/fcntl.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>

#include <sys/md4.h>

#include <netsmb/smb.h>
#include <netsmb/smb_conn.h>
#include <netsmb/smb_subr.h>
#include <netsmb/smb_dev.h>

/* always enable */
#define NETSMBCRYPTO

#ifdef NETSMBCRYPTO

#include <crypto/des/des.h>

static const u_char N8[] = {0x4b, 0x47, 0x53, 0x21, 0x40, 0x23, 0x24, 0x25};


static void
smb_E(const u_char *key, const u_char *data, u_char *dest)
{
	des_key_schedule *ksp;
	u_char kk[8];

	kk[0] = key[0] & 0xfe;
	kk[1] = key[0] << 7 | (key[1] >> 1 & 0xfe);
	kk[2] = key[1] << 6 | (key[2] >> 2 & 0xfe);
	kk[3] = key[2] << 5 | (key[3] >> 3 & 0xfe);
	kk[4] = key[3] << 4 | (key[4] >> 4 & 0xfe);
	kk[5] = key[4] << 3 | (key[5] >> 5 & 0xfe);
	kk[6] = key[5] << 2 | (key[6] >> 6 & 0xfe);
	kk[7] = key[6] << 1;
	ksp = malloc(sizeof(des_key_schedule), M_SMBTEMP, M_WAITOK);
	des_set_key((des_cblock *)kk, *ksp);
	/* XXXUNCONST */
	des_ecb_encrypt(__UNCONST(data), (des_cblock *)dest, *ksp, 1);
	free(ksp, M_SMBTEMP);
}
#endif


int
smb_encrypt(const u_char *apwd, u_char *C8, u_char *RN)
{
#ifdef NETSMBCRYPTO
	u_char *p, *P14, *S21;

	p = malloc(14 + 21, M_SMBTEMP, M_WAITOK);
	bzero(p, 14 + 21);
	P14 = p;
	S21 = p + 14;
	bcopy(apwd, P14, min(14, strlen(apwd)));
	/*
	 * S21 = concat(Ex(P14, N8), zeros(5));
	 */
	smb_E(P14, N8, S21);
	smb_E(P14 + 7, N8, S21 + 8);

	smb_E(S21, C8, RN);
	smb_E(S21 + 7, C8, RN + 8);
	smb_E(S21 + 14, C8, RN + 16);
	free(p, M_SMBTEMP);
	return 0;
#else
	SMBERROR("password encryption is not available\n");
	bzero(RN, 24);
	return EAUTH;
#endif
}

int
smb_ntencrypt(const u_char *apwd, u_char *C8, u_char *RN)
{
#ifdef NETSMBCRYPTO
	u_char S21[21];
	u_int16_t *unipwd;
	MD4_CTX *ctxp;
	int len;

	len = strlen(apwd);
	unipwd = malloc((len + 1) * sizeof(u_int16_t), M_SMBTEMP, M_WAITOK);
	/*
	 * S21 = concat(MD4(U(apwd)), zeros(5));
	 */
	smb_strtouni(unipwd, apwd);
	ctxp = malloc(sizeof(MD4_CTX), M_SMBTEMP, M_WAITOK);
	MD4Init(ctxp);
	MD4Update(ctxp, (u_char*)unipwd, len * sizeof(u_int16_t));
	free(unipwd, M_SMBTEMP);
	bzero(S21, 21);
	MD4Final(S21, ctxp);
	free(ctxp, M_SMBTEMP);

	smb_E(S21, C8, RN);
	smb_E(S21 + 7, C8, RN + 8);
	smb_E(S21 + 14, C8, RN + 16);
	return 0;
#else
	SMBERROR("password encryption is not available\n");
	bzero(RN, 24);
	return EAUTH;
#endif
}