You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
154 lines
3.3 KiB
154 lines
3.3 KiB
/*++
|
|
|
|
Copyright (c) 1989-1997 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
response.c
|
|
|
|
Abstract:
|
|
|
|
Contains functions that calculate the correct response to return
|
|
to the server when logging on.
|
|
|
|
RtlCalculateLmResponse
|
|
RtlCalculateNtResponse
|
|
|
|
|
|
Author:
|
|
|
|
David Chalmers (Davidc) 10-21-91
|
|
|
|
Revision History:
|
|
|
|
Adam Barr (AdamBa) 12-15-97
|
|
Modified from private\security\lsa\crypt\dll
|
|
|
|
--*/
|
|
|
|
#include <rdrssp.h>
|
|
|
|
|
|
|
|
NTSTATUS
|
|
RtlCalculateLmResponse(
|
|
IN PLM_CHALLENGE LmChallenge,
|
|
IN PLM_OWF_PASSWORD LmOwfPassword,
|
|
OUT PLM_RESPONSE LmResponse
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Takes the challenge sent by the server and the OwfPassword generated
|
|
from the password the user entered and calculates the response to
|
|
return to the server.
|
|
|
|
Arguments:
|
|
|
|
LmChallenge - The challenge sent by the server
|
|
|
|
LmOwfPassword - The hashed password.
|
|
|
|
LmResponse - The response is returned here.
|
|
|
|
|
|
Return Values:
|
|
|
|
STATUS_SUCCESS - The function completed successfully. The response
|
|
is in LmResponse.
|
|
|
|
STATUS_UNSUCCESSFUL - Something failed. The LmResponse is undefined.
|
|
--*/
|
|
|
|
{
|
|
NTSTATUS Status;
|
|
BLOCK_KEY Key;
|
|
PCHAR pKey, pData;
|
|
|
|
// The first 2 keys we can get at by type-casting
|
|
|
|
Status = RtlEncryptBlock(LmChallenge,
|
|
&(((PBLOCK_KEY)(LmOwfPassword->data))[0]),
|
|
&(LmResponse->data[0]));
|
|
if (!NT_SUCCESS(Status)) {
|
|
return(Status);
|
|
}
|
|
|
|
Status = RtlEncryptBlock(LmChallenge,
|
|
&(((PBLOCK_KEY)(LmOwfPassword->data))[1]),
|
|
&(LmResponse->data[1]));
|
|
if (!NT_SUCCESS(Status)) {
|
|
return(Status);
|
|
}
|
|
|
|
// To get the last key we must copy the remainder of the OwfPassword
|
|
// and fill the rest of the key with 0s
|
|
|
|
pKey = &(Key.data[0]);
|
|
pData = (PCHAR)&(((PBLOCK_KEY)(LmOwfPassword->data))[2]);
|
|
|
|
while (pData < (PCHAR)&(LmOwfPassword->data[2])) {
|
|
*pKey++ = *pData++;
|
|
}
|
|
|
|
// Zero extend
|
|
|
|
while (pKey < (PCHAR)&((&Key)[1])) {
|
|
*pKey++ = 0;
|
|
}
|
|
|
|
// Use the 3rd key
|
|
|
|
Status = RtlEncryptBlock(LmChallenge, &Key, &(LmResponse->data[2]));
|
|
|
|
return(Status);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
NTSTATUS
|
|
RtlCalculateNtResponse(
|
|
IN PNT_CHALLENGE NtChallenge,
|
|
IN PNT_OWF_PASSWORD NtOwfPassword,
|
|
OUT PNT_RESPONSE NtResponse
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Takes the challenge sent by the server and the OwfPassword generated
|
|
from the password the user entered and calculates the response to
|
|
return(to the server.
|
|
|
|
Arguments:
|
|
|
|
NtChallenge - The challenge sent by the server
|
|
|
|
NtOwfPassword - The hashed password.
|
|
|
|
NtResponse - The response is returned here.
|
|
|
|
|
|
Return Values:
|
|
|
|
STATUS_SUCCESS - The function completed successfully. The response
|
|
is in NtResponse.
|
|
|
|
STATUS_UNSUCCESSFUL - Something failed. The NtResponse is undefined.
|
|
--*/
|
|
|
|
{
|
|
|
|
// Use the LM version until we change the definitions of any of
|
|
// these data types
|
|
|
|
return(RtlCalculateLmResponse((PLM_CHALLENGE)NtChallenge,
|
|
(PLM_OWF_PASSWORD)NtOwfPassword,
|
|
(PLM_RESPONSE)NtResponse));
|
|
}
|