329 lines
9.2 KiB
C
329 lines
9.2 KiB
C
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Copyright (c) 1993 Microsoft Corporation
|
||
|
|
|
||
|
|
Module Name:
|
||
|
|
|
||
|
|
encrypt.c
|
||
|
|
|
||
|
|
Abstract:
|
||
|
|
|
||
|
|
This module implements the routines for the NetWare
|
||
|
|
redirector to mangle an objectid, challenge key and
|
||
|
|
password such that a NetWare server will accept the
|
||
|
|
password as valid.
|
||
|
|
|
||
|
|
This program uses information published in Byte Magazine.
|
||
|
|
|
||
|
|
Author:
|
||
|
|
|
||
|
|
Colin Watson [ColinW] 15-Mar-1993
|
||
|
|
|
||
|
|
Revision History:
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
|
||
|
|
#include <nt.h>
|
||
|
|
#include <ntrtl.h>
|
||
|
|
#include <nturtl.h>
|
||
|
|
#include <windows.h>
|
||
|
|
// #include <nwsutil.h>
|
||
|
|
#include <usrprop.h>
|
||
|
|
#include <crypt.h>
|
||
|
|
// #include <ncpcomm.h>
|
||
|
|
|
||
|
|
#define SWAPWORD(w) ((WORD)((w & 0xFF) << 8)|(WORD)(w >> 8))
|
||
|
|
#define SWAPLONG(l) MAKELONG(SWAPWORD(HIWORD(l)),SWAPWORD(LOWORD(l)))
|
||
|
|
|
||
|
|
#define NCP_WELL_KNOWN_SUPERVISOR_ID (ULONG) 0x00000001
|
||
|
|
#define NCP_WELL_KNOWN_SUPERVISOR_ID_SWAPPED (ULONG) 0x01000000
|
||
|
|
#define NCP_WELL_KNOWN_SUPERVISOR_ID_CHICAGO (ULONG) 0x00010000
|
||
|
|
#define NCP_WELL_KNOWN_PSERVER_ID (ULONG) 0x00000002
|
||
|
|
|
||
|
|
#define NCP_PSERVER_SIGNATURE L"PS_"
|
||
|
|
|
||
|
|
#define SWAP_OBJECT_ID(id) (id == NCP_WELL_KNOWN_SUPERVISOR_ID) ? \
|
||
|
|
NCP_WELL_KNOWN_SUPERVISOR_ID_SWAPPED : \
|
||
|
|
MAKELONG(LOWORD(id),SWAPWORD(HIWORD(id)))
|
||
|
|
|
||
|
|
|
||
|
|
UCHAR Table[] =
|
||
|
|
{0x7,0x8,0x0,0x8,0x6,0x4,0xE,0x4,0x5,0xC,0x1,0x7,0xB,0xF,0xA,0x8,
|
||
|
|
0xF,0x8,0xC,0xC,0x9,0x4,0x1,0xE,0x4,0x6,0x2,0x4,0x0,0xA,0xB,0x9,
|
||
|
|
0x2,0xF,0xB,0x1,0xD,0x2,0x1,0x9,0x5,0xE,0x7,0x0,0x0,0x2,0x6,0x6,
|
||
|
|
0x0,0x7,0x3,0x8,0x2,0x9,0x3,0xF,0x7,0xF,0xC,0xF,0x6,0x4,0xA,0x0,
|
||
|
|
0x2,0x3,0xA,0xB,0xD,0x8,0x3,0xA,0x1,0x7,0xC,0xF,0x1,0x8,0x9,0xD,
|
||
|
|
0x9,0x1,0x9,0x4,0xE,0x4,0xC,0x5,0x5,0xC,0x8,0xB,0x2,0x3,0x9,0xE,
|
||
|
|
0x7,0x7,0x6,0x9,0xE,0xF,0xC,0x8,0xD,0x1,0xA,0x6,0xE,0xD,0x0,0x7,
|
||
|
|
0x7,0xA,0x0,0x1,0xF,0x5,0x4,0xB,0x7,0xB,0xE,0xC,0x9,0x5,0xD,0x1,
|
||
|
|
0xB,0xD,0x1,0x3,0x5,0xD,0xE,0x6,0x3,0x0,0xB,0xB,0xF,0x3,0x6,0x4,
|
||
|
|
0x9,0xD,0xA,0x3,0x1,0x4,0x9,0x4,0x8,0x3,0xB,0xE,0x5,0x0,0x5,0x2,
|
||
|
|
0xC,0xB,0xD,0x5,0xD,0x5,0xD,0x2,0xD,0x9,0xA,0xC,0xA,0x0,0xB,0x3,
|
||
|
|
0x5,0x3,0x6,0x9,0x5,0x1,0xE,0xE,0x0,0xE,0x8,0x2,0xD,0x2,0x2,0x0,
|
||
|
|
0x4,0xF,0x8,0x5,0x9,0x6,0x8,0x6,0xB,0xA,0xB,0xF,0x0,0x7,0x2,0x8,
|
||
|
|
0xC,0x7,0x3,0xA,0x1,0x4,0x2,0x5,0xF,0x7,0xA,0xC,0xE,0x5,0x9,0x3,
|
||
|
|
0xE,0x7,0x1,0x2,0xE,0x1,0xF,0x4,0xA,0x6,0xC,0x6,0xF,0x4,0x3,0x0,
|
||
|
|
0xC,0x0,0x3,0x6,0xF,0x8,0x7,0xB,0x2,0xD,0xC,0x6,0xA,0xA,0x8,0xD};
|
||
|
|
|
||
|
|
UCHAR Keys[32] =
|
||
|
|
{0x48,0x93,0x46,0x67,0x98,0x3D,0xE6,0x8D,
|
||
|
|
0xB7,0x10,0x7A,0x26,0x5A,0xB9,0xB1,0x35,
|
||
|
|
0x6B,0x0F,0xD5,0x70,0xAE,0xFB,0xAD,0x11,
|
||
|
|
0xF4,0x47,0xDC,0xA7,0xEC,0xCF,0x50,0xC0};
|
||
|
|
|
||
|
|
#define XorArray( DEST, SRC ) { \
|
||
|
|
PULONG D = (PULONG)DEST; \
|
||
|
|
PULONG S = (PULONG)SRC; \
|
||
|
|
int i; \
|
||
|
|
for ( i = 0; i <= 7 ; i++ ) { \
|
||
|
|
D[i] ^= S[i]; \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
Scramble(
|
||
|
|
int iSeed,
|
||
|
|
UCHAR achBuffer[32]
|
||
|
|
);
|
||
|
|
|
||
|
|
VOID
|
||
|
|
Shuffle(
|
||
|
|
UCHAR *achObjectId,
|
||
|
|
UCHAR *szUpperPassword,
|
||
|
|
int iPasswordLen,
|
||
|
|
UCHAR *achOutputBuffer
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine shuffles around the object ID with the password
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
IN achObjectId - Supplies the 4 byte user's bindery object id
|
||
|
|
|
||
|
|
IN szUpperPassword - Supplies the user's uppercased password on the
|
||
|
|
first call to process the password. On the second and third calls
|
||
|
|
this parameter contains the OutputBuffer from the first call
|
||
|
|
|
||
|
|
IN iPasswordLen - length of uppercased password
|
||
|
|
|
||
|
|
OUT achOutputBuffer - Returns the 8 byte sub-calculation
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
none.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
int iTempIndex;
|
||
|
|
int iOutputIndex;
|
||
|
|
UCHAR achTemp[32];
|
||
|
|
|
||
|
|
//
|
||
|
|
// Truncate all trailing zeros from the password.
|
||
|
|
//
|
||
|
|
|
||
|
|
while (iPasswordLen > 0 && szUpperPassword[iPasswordLen-1] == 0 ) {
|
||
|
|
iPasswordLen--;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Initialize the achTemp buffer. Initialization consists of taking
|
||
|
|
// the password and dividing it up into chunks of 32. Any bytes left
|
||
|
|
// over are the remainder and do not go into the initialization.
|
||
|
|
//
|
||
|
|
// achTemp[0] = szUpperPassword[0] ^ szUpperPassword[32] ^ szUpper...
|
||
|
|
// achTemp[1] = szUpperPassword[1] ^ szUpperPassword[33] ^ szUpper...
|
||
|
|
// etc.
|
||
|
|
//
|
||
|
|
|
||
|
|
if ( iPasswordLen > 32) {
|
||
|
|
|
||
|
|
// At least one chunk of 32. Set the buffer to the first chunk.
|
||
|
|
|
||
|
|
RtlCopyMemory( achTemp, szUpperPassword, 32 );
|
||
|
|
|
||
|
|
szUpperPassword +=32; // Remove the first chunk
|
||
|
|
iPasswordLen -=32;
|
||
|
|
|
||
|
|
while ( iPasswordLen >= 32 ) {
|
||
|
|
//
|
||
|
|
// Xor this chunk with the characters already loaded into
|
||
|
|
// achTemp.
|
||
|
|
//
|
||
|
|
|
||
|
|
XorArray( achTemp, szUpperPassword);
|
||
|
|
|
||
|
|
szUpperPassword +=32; // Remove this chunk
|
||
|
|
iPasswordLen -=32;
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
// No chunks of 32 so set the buffer to zero's
|
||
|
|
|
||
|
|
RtlZeroMemory( achTemp, sizeof(achTemp));
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// achTemp is now initialized. Load the remainder into achTemp.
|
||
|
|
// The remainder is repeated to fill achTemp.
|
||
|
|
//
|
||
|
|
// The corresponding character from Keys is taken to seperate
|
||
|
|
// each repitition.
|
||
|
|
//
|
||
|
|
// As an example, take the remainder "ABCDEFG". The remainder is expanded
|
||
|
|
// to "ABCDEFGwABCDEFGxABCDEFGyABCDEFGz" where w is Keys[7],
|
||
|
|
// x is Keys[15], y is Keys[23] and z is Keys[31].
|
||
|
|
//
|
||
|
|
//
|
||
|
|
|
||
|
|
if (iPasswordLen > 0) {
|
||
|
|
int iPasswordOffset = 0;
|
||
|
|
for (iTempIndex = 0; iTempIndex < 32; iTempIndex++) {
|
||
|
|
|
||
|
|
if (iPasswordLen == iPasswordOffset) {
|
||
|
|
iPasswordOffset = 0;
|
||
|
|
achTemp[iTempIndex] ^= Keys[iTempIndex];
|
||
|
|
} else {
|
||
|
|
achTemp[iTempIndex] ^= szUpperPassword[iPasswordOffset++];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// achTemp has been loaded with the users password packed into 32
|
||
|
|
// bytes. Now take the objectid that came from the server and use
|
||
|
|
// that to munge every byte in achTemp.
|
||
|
|
//
|
||
|
|
|
||
|
|
for (iTempIndex = 0; iTempIndex < 32; iTempIndex++)
|
||
|
|
achTemp[iTempIndex] ^= achObjectId[ iTempIndex & 3];
|
||
|
|
|
||
|
|
Scramble( Scramble( 0, achTemp ), achTemp );
|
||
|
|
|
||
|
|
//
|
||
|
|
// Finally take pairs of bytes in achTemp and return the two
|
||
|
|
// nibbles obtained from Table. The pairs of bytes used
|
||
|
|
// are achTemp[n] and achTemp[n+16].
|
||
|
|
//
|
||
|
|
|
||
|
|
for (iOutputIndex = 0; iOutputIndex < 16; iOutputIndex++) {
|
||
|
|
|
||
|
|
achOutputBuffer[iOutputIndex] =
|
||
|
|
Table[achTemp[iOutputIndex << 1]] |
|
||
|
|
(Table[achTemp[(iOutputIndex << 1) + 1]] << 4);
|
||
|
|
}
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
Scramble(
|
||
|
|
int iSeed,
|
||
|
|
UCHAR achBuffer[32]
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine scrambles around the contents of the buffer. Each buffer
|
||
|
|
position is updated to include the contents of at least two character
|
||
|
|
positions plus an EncryptKey value. The buffer is processed left to right
|
||
|
|
and so if a character position chooses to merge with a buffer position
|
||
|
|
to its left then this buffer position will include bits derived from at
|
||
|
|
least 3 bytes of the original buffer contents.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
IN iSeed
|
||
|
|
IN OUT achBuffer[32]
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
none.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
int iBufferIndex;
|
||
|
|
|
||
|
|
for (iBufferIndex = 0; iBufferIndex < 32; iBufferIndex++) {
|
||
|
|
achBuffer[iBufferIndex] =
|
||
|
|
(UCHAR)(
|
||
|
|
((UCHAR)(achBuffer[iBufferIndex] + iSeed)) ^
|
||
|
|
((UCHAR)( achBuffer[(iBufferIndex+iSeed) & 31] -
|
||
|
|
Keys[iBufferIndex] )));
|
||
|
|
|
||
|
|
iSeed += achBuffer[iBufferIndex];
|
||
|
|
}
|
||
|
|
return iSeed;
|
||
|
|
}
|
||
|
|
|
||
|
|
NTSTATUS
|
||
|
|
ReturnNetwareForm(
|
||
|
|
const char * pszSecretValue,
|
||
|
|
DWORD dwUserId,
|
||
|
|
const WCHAR * pchNWPassword,
|
||
|
|
UCHAR * pchEncryptedNWPassword
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This routine takes the ObjectId and encrypts it with the user
|
||
|
|
supplied password to develop a credential for the intermediate form.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
DWORD dwUserId - Supplies the 4 byte user's object id
|
||
|
|
const WCHAR * pchNWPassword - Supplies the user's password
|
||
|
|
|
||
|
|
UCHAR * pchEncryptedNWPassword - 16 characters where the result goes.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
none.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
DWORD dwStatus;
|
||
|
|
DWORD chObjectId = SWAP_OBJECT_ID (dwUserId);
|
||
|
|
UNICODE_STRING uniNWPassword;
|
||
|
|
OEM_STRING oemNWPassword;
|
||
|
|
|
||
|
|
//
|
||
|
|
// shuffle actually uses 32 bytes, not just 16. It only returns 16 though.
|
||
|
|
//
|
||
|
|
|
||
|
|
UCHAR pszShuffledNWPassword[NT_OWF_PASSWORD_LENGTH * 2];
|
||
|
|
|
||
|
|
uniNWPassword.Buffer = (WCHAR *) pchNWPassword;
|
||
|
|
uniNWPassword.Length = (USHORT)(lstrlenW (pchNWPassword)*sizeof(WCHAR));
|
||
|
|
uniNWPassword.MaximumLength = uniNWPassword.Length;
|
||
|
|
|
||
|
|
if ((dwStatus = RtlUpcaseUnicodeStringToOemString (&oemNWPassword,
|
||
|
|
&uniNWPassword,
|
||
|
|
TRUE)) == STATUS_SUCCESS)
|
||
|
|
{
|
||
|
|
Shuffle((UCHAR *) &chObjectId, oemNWPassword.Buffer, oemNWPassword.Length, pszShuffledNWPassword);
|
||
|
|
|
||
|
|
// Encrypt with LSA secret.
|
||
|
|
dwStatus = RtlEncryptNtOwfPwdWithUserKey(
|
||
|
|
(PNT_OWF_PASSWORD) pszShuffledNWPassword,
|
||
|
|
(PUSER_SESSION_KEY) pszSecretValue,
|
||
|
|
(PENCRYPTED_NT_OWF_PASSWORD) pchEncryptedNWPassword);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (dwStatus);
|
||
|
|
}
|