Sweden-Number/dlls/advapi32/crypt_lmhash.c

283 lines
7.7 KiB
C

/*
* Copyright 2004 Hans Leidekker
*
* Based on LMHash.c from libcifs
*
* Copyright (C) 2004 by Christopher R. Hertel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdarg.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "winternl.h"
#include "crypt.h"
static const unsigned char CRYPT_LMhash_Magic[8] =
{ 'K', 'G', 'S', '!', '@', '#', '$', '%' };
static void CRYPT_LMhash( unsigned char *dst, const unsigned char *pwd, const int len )
{
int i, max = 14;
unsigned char tmp_pwd[14] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
max = len > max ? max : len;
for (i = 0; i < max; i++)
tmp_pwd[i] = pwd[i];
CRYPT_DEShash( dst, tmp_pwd, CRYPT_LMhash_Magic );
CRYPT_DEShash( &dst[8], &tmp_pwd[7], CRYPT_LMhash_Magic );
}
NTSTATUS WINAPI SystemFunction006( LPCSTR password, LPSTR hash )
{
CRYPT_LMhash( (unsigned char*)hash, (unsigned char*)password, strlen(password) );
return STATUS_SUCCESS;
}
/******************************************************************************
* SystemFunction008 [ADVAPI32.@]
*
* Creates a LM response from a challenge and a password hash
*
* PARAMS
* challenge [I] Challenge from authentication server
* hash [I] NTLM hash (from SystemFunction006)
* response [O] response to send back to the server
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_UNSUCCESSFUL
*
* NOTES
* see http://davenport.sourceforge.net/ntlm.html#theLmResponse
*
*/
NTSTATUS WINAPI SystemFunction008(const LPBYTE challenge, const LPBYTE hash, LPBYTE response)
{
BYTE key[7*3];
if (!challenge || !response)
return STATUS_UNSUCCESSFUL;
memset(key, 0, sizeof key);
memcpy(key, hash, 0x10);
CRYPT_DEShash(response, key, challenge);
CRYPT_DEShash(response+8, key+7, challenge);
CRYPT_DEShash(response+16, key+14, challenge);
return STATUS_SUCCESS;
}
/******************************************************************************
* SystemFunction001 [ADVAPI32.@]
*
* Encrypts a single block of data using DES
*
* PARAMS
* data [I] data to encrypt (8 bytes)
* key [I] key data (7 bytes)
* output [O] the encrypted data (8 bytes)
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_UNSUCCESSFUL
*
*/
NTSTATUS WINAPI SystemFunction001(const LPBYTE data, const LPBYTE key, LPBYTE output)
{
if (!data || !output)
return STATUS_UNSUCCESSFUL;
CRYPT_DEShash(output, key, data);
return STATUS_SUCCESS;
}
/******************************************************************************
* SystemFunction002 [ADVAPI32.@]
*
* Decrypts a single block of data using DES
*
* PARAMS
* data [I] data to decrypt (8 bytes)
* key [I] key data (7 bytes)
* output [O] the decrypted data (8 bytes)
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_UNSUCCESSFUL
*
*/
NTSTATUS WINAPI SystemFunction002(const LPBYTE data, const LPBYTE key, LPBYTE output)
{
if (!data || !output)
return STATUS_UNSUCCESSFUL;
CRYPT_DESunhash(output, key, data);
return STATUS_SUCCESS;
}
/******************************************************************************
* SystemFunction003 [ADVAPI32.@]
*
* Hashes a key using DES and a fixed datablock
*
* PARAMS
* key [I] key data (7 bytes)
* output [O] hashed key (8 bytes)
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_UNSUCCESSFUL
*
*/
NTSTATUS WINAPI SystemFunction003(const LPBYTE key, LPBYTE output)
{
if (!output)
return STATUS_UNSUCCESSFUL;
CRYPT_DEShash(output, key, CRYPT_LMhash_Magic);
return STATUS_SUCCESS;
}
/******************************************************************************
* SystemFunction004 [ADVAPI32.@]
*
* Encrypts a block of data with DES in ECB mode, preserving the length
*
* PARAMS
* data [I] data to encrypt
* key [I] key data (up to 7 bytes)
* output [O] buffer to receive encrypted data
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_BUFFER_TOO_SMALL if the output buffer is too small
* Failure: STATUS_INVALID_PARAMETER_2 if the key is zero length
*
* NOTES
* Encrypt buffer size should be input size rounded up to 8 bytes
* plus an extra 8 bytes.
*/
NTSTATUS WINAPI SystemFunction004(const struct ustring *in,
const struct ustring *key,
struct ustring *out)
{
union {
unsigned char uc[8];
unsigned int ui[2];
} data;
unsigned char deskey[7];
int crypt_len, ofs;
if (key->Length<=0)
return STATUS_INVALID_PARAMETER_2;
crypt_len = ((in->Length+7)&~7);
if (out->MaximumLength < (crypt_len+8))
return STATUS_BUFFER_TOO_SMALL;
data.ui[0] = in->Length;
data.ui[1] = 1;
if (key->Length<sizeof deskey)
{
memset(deskey, 0, sizeof deskey);
memcpy(deskey, key->Buffer, key->Length);
}
else
memcpy(deskey, key->Buffer, sizeof deskey);
CRYPT_DEShash(out->Buffer, deskey, data.uc);
for(ofs=0; ofs<(crypt_len-8); ofs+=8)
CRYPT_DEShash(out->Buffer+8+ofs, deskey, in->Buffer+ofs);
memset(data.uc, 0, sizeof data.uc);
memcpy(data.uc, in->Buffer+ofs, in->Length +8-crypt_len);
CRYPT_DEShash(out->Buffer+8+ofs, deskey, data.uc);
out->Length = crypt_len+8;
return STATUS_SUCCESS;
}
/******************************************************************************
* SystemFunction005 [ADVAPI32.@]
*
* Decrypts a block of data with DES in ECB mode
*
* PARAMS
* data [I] data to decrypt
* key [I] key data (up to 7 bytes)
* output [O] buffer to receive decrypted data
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_BUFFER_TOO_SMALL if the output buffer is too small
* Failure: STATUS_INVALID_PARAMETER_2 if the key is zero length
*
*/
NTSTATUS WINAPI SystemFunction005(const struct ustring *in,
const struct ustring *key,
struct ustring *out)
{
union {
unsigned char uc[8];
unsigned int ui[2];
} data;
unsigned char deskey[7];
int ofs, crypt_len;
if (key->Length<=0)
return STATUS_INVALID_PARAMETER_2;
if (key->Length<sizeof deskey)
{
memset(deskey, 0, sizeof deskey);
memcpy(deskey, key->Buffer, key->Length);
}
else
memcpy(deskey, key->Buffer, sizeof deskey);
CRYPT_DESunhash(data.uc, deskey, in->Buffer);
if (data.ui[1] != 1)
return STATUS_UNKNOWN_REVISION;
crypt_len = data.ui[0];
if (crypt_len > out->MaximumLength)
return STATUS_BUFFER_TOO_SMALL;
for (ofs=0; (ofs+8)<crypt_len; ofs+=8)
CRYPT_DESunhash(out->Buffer+ofs, deskey, in->Buffer+ofs+8);
if (ofs<crypt_len)
{
CRYPT_DESunhash(data.uc, deskey, in->Buffer+ofs+8);
memcpy(out->Buffer+ofs, data.uc, crypt_len-ofs);
}
out->Length = crypt_len;
return STATUS_SUCCESS;
}