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.
629 lines
16 KiB
629 lines
16 KiB
//+--------------------------------------------------------------------------
|
|
//
|
|
// Copyright (c) 1997-1999 Microsoft Corporation
|
|
//
|
|
// File: trust.cpp
|
|
//
|
|
// Contents:
|
|
//
|
|
// History:
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
#include <windows.h>
|
|
#include <wincrypt.h>
|
|
#include <tchar.h>
|
|
#include <stdlib.h>
|
|
#include "license.h"
|
|
#include "tlsapip.h"
|
|
#include "trust.h"
|
|
|
|
|
|
LPCTSTR g_pszServerGuid = _TEXT("d63a773e-6799-11d2-96ae-00c04fa3080d");
|
|
const DWORD g_cbServerGuid = (_tcslen(g_pszServerGuid) * sizeof(TCHAR));
|
|
|
|
LPCTSTR g_pszLrWizGuid = _TEXT("d46b4bf2-686d-11d2-96ae-00c04fa3080d");
|
|
const DWORD g_cbLrWizGuid = (_tcslen(g_pszLrWizGuid) * sizeof(TCHAR));
|
|
|
|
//----------------------------------------------------------------
|
|
|
|
DWORD
|
|
HashChallengeData(
|
|
IN HCRYPTPROV hCryptProv,
|
|
IN DWORD dwClientType,
|
|
IN DWORD dwRandom,
|
|
IN PBYTE pbChallengeData,
|
|
IN DWORD cbChallengeData,
|
|
IN PBYTE pbReserved,
|
|
IN DWORD cbReserved,
|
|
OUT PBYTE* ppbHashedData,
|
|
OUT PDWORD pcbHashedData
|
|
)
|
|
|
|
/*++
|
|
|
|
|
|
--*/
|
|
|
|
{
|
|
DWORD dwStatus = ERROR_SUCCESS;
|
|
HCRYPTHASH hCryptHash = NULL;
|
|
|
|
PBYTE pbHashData = NULL;
|
|
DWORD cbHashData = 0;
|
|
|
|
DWORD cbHashGuidSize;
|
|
LPCTSTR pszHashGuid;
|
|
|
|
BOOL bSuccess;
|
|
|
|
|
|
|
|
//
|
|
// Generate MD5 hash
|
|
//
|
|
bSuccess = CryptCreateHash(
|
|
hCryptProv,
|
|
CALG_MD5,
|
|
0,
|
|
0,
|
|
&hCryptHash
|
|
);
|
|
|
|
if(bSuccess == FALSE)
|
|
{
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// Pick the right hash type
|
|
//
|
|
if(dwClientType == CLIENT_TYPE_LRWIZ)
|
|
{
|
|
pszHashGuid = g_pszLrWizGuid;
|
|
cbHashGuidSize = g_cbLrWizGuid;
|
|
}
|
|
else
|
|
{
|
|
pszHashGuid = g_pszServerGuid;
|
|
cbHashGuidSize = g_cbServerGuid;
|
|
}
|
|
|
|
//
|
|
// TODO : Consider hash a few times...
|
|
//
|
|
bSuccess = CryptHashData(
|
|
hCryptHash,
|
|
(PBYTE) pbChallengeData,
|
|
dwRandom,
|
|
0
|
|
);
|
|
|
|
if(bSuccess == FALSE)
|
|
{
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
|
|
bSuccess = CryptHashData(
|
|
hCryptHash,
|
|
(PBYTE) pszHashGuid,
|
|
cbHashGuidSize,
|
|
0
|
|
);
|
|
|
|
if(bSuccess == FALSE)
|
|
{
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
|
|
bSuccess = CryptHashData(
|
|
hCryptHash,
|
|
(PBYTE) pbChallengeData + dwRandom,
|
|
cbChallengeData - dwRandom,
|
|
0
|
|
);
|
|
|
|
if(bSuccess == FALSE)
|
|
{
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
|
|
//
|
|
// Get the size of hased data
|
|
//
|
|
bSuccess = CryptGetHashParam(
|
|
hCryptHash,
|
|
HP_HASHVAL,
|
|
NULL,
|
|
&cbHashData,
|
|
0
|
|
);
|
|
|
|
if(bSuccess == FALSE && GetLastError() != ERROR_MORE_DATA)
|
|
{
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
pbHashData = (PBYTE)LocalAlloc(LPTR, cbHashData);
|
|
if(pbHashData == NULL)
|
|
{
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
bSuccess = CryptGetHashParam(
|
|
hCryptHash,
|
|
HP_HASHVAL,
|
|
pbHashData,
|
|
&cbHashData,
|
|
0
|
|
);
|
|
|
|
if(bSuccess == FALSE)
|
|
{
|
|
dwStatus = GetLastError();
|
|
}
|
|
|
|
cleanup:
|
|
|
|
if(hCryptHash)
|
|
{
|
|
CryptDestroyHash( hCryptHash );
|
|
}
|
|
|
|
if(dwStatus == ERROR_SUCCESS)
|
|
{
|
|
*ppbHashedData = pbHashData;
|
|
*pcbHashedData = cbHashData;
|
|
pbHashData = NULL;
|
|
}
|
|
|
|
if(pbHashData != NULL)
|
|
{
|
|
LocalFree(pbHashData);
|
|
}
|
|
|
|
return dwStatus;
|
|
|
|
}
|
|
|
|
//----------------------------------------------------------------
|
|
|
|
DWORD WINAPI
|
|
TLSVerifyChallengeResponse(
|
|
IN HCRYPTPROV hCryptProv,
|
|
IN DWORD dwClientType,
|
|
IN PTLSCHALLENGEDATA pClientChallengeData,
|
|
IN PTLSCHALLENGERESPONSEDATA pServerChallengeResponseData
|
|
)
|
|
/*++
|
|
|
|
--*/
|
|
|
|
{
|
|
DWORD dwStatus = ERROR_SUCCESS;
|
|
PBYTE pbData = NULL;
|
|
DWORD cbData = 0;
|
|
|
|
//
|
|
// base on our challenge data, generate a corresponding
|
|
// hash data
|
|
//
|
|
dwStatus = HashChallengeData(
|
|
hCryptProv,
|
|
dwClientType,
|
|
pClientChallengeData->dwRandom,
|
|
pClientChallengeData->pbChallengeData,
|
|
pClientChallengeData->cbChallengeData,
|
|
pClientChallengeData->pbReservedData,
|
|
pClientChallengeData->cbReservedData,
|
|
&pbData,
|
|
&cbData
|
|
);
|
|
|
|
if(dwStatus != ERROR_SUCCESS)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
|
|
//
|
|
// Compare our hash with response data
|
|
//
|
|
if(pServerChallengeResponseData->cbResponseData != cbData)
|
|
{
|
|
dwStatus = ERROR_INVALID_DATA;
|
|
}
|
|
|
|
if(memcmp(pServerChallengeResponseData->pbResponseData, pbData, cbData) != 0)
|
|
{
|
|
dwStatus = ERROR_INVALID_DATA;
|
|
}
|
|
|
|
cleanup:
|
|
|
|
if(pbData != NULL)
|
|
LocalFree(pbData);
|
|
|
|
return dwStatus;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------
|
|
|
|
DWORD
|
|
TLSGenerateChallengeResponseData(
|
|
IN HCRYPTPROV hCryptProv,
|
|
IN DWORD dwClientType,
|
|
IN PTLSCHALLENGEDATA pChallengeData,
|
|
OUT PBYTE* pbResponseData,
|
|
OUT PDWORD cbResponseData
|
|
)
|
|
|
|
/*++
|
|
|
|
|
|
--*/
|
|
|
|
{
|
|
DWORD dwStatus = ERROR_SUCCESS;
|
|
|
|
dwStatus = HashChallengeData(
|
|
hCryptProv,
|
|
dwClientType,
|
|
pChallengeData->dwRandom,
|
|
pChallengeData->pbChallengeData,
|
|
pChallengeData->cbChallengeData,
|
|
pChallengeData->pbReservedData,
|
|
pChallengeData->cbReservedData,
|
|
pbResponseData,
|
|
cbResponseData
|
|
);
|
|
|
|
return dwStatus;
|
|
}
|
|
|
|
|
|
//----------------------------------------------------------------
|
|
|
|
DWORD WINAPI
|
|
TLSGenerateRandomChallengeData(
|
|
IN HCRYPTPROV hCryptProv,
|
|
IN PBYTE* ppbChallengeData,
|
|
IN PDWORD pcbChallengeData
|
|
)
|
|
|
|
/*++
|
|
|
|
Abstract:
|
|
|
|
Generate two random 128 bit challenge data and concatenate it
|
|
before returning.
|
|
|
|
Parameters:
|
|
|
|
hCryptProv : Crypto. provider.
|
|
pcbChallengeData : Pointer to DWORD receiving size
|
|
of challenge data.
|
|
ppbChallengeData : Pointer to BYTE receiving randomly
|
|
generated challege data.
|
|
|
|
Returns:
|
|
|
|
ERROR_SUCCESS or error code.
|
|
|
|
Note:
|
|
|
|
All memory allocation via LocalAlloc().
|
|
|
|
--*/
|
|
|
|
{
|
|
DWORD dwLen = RANDOM_CHALLENGE_DATASIZE;
|
|
DWORD dwStatus = ERROR_SUCCESS;
|
|
BOOL bSuccess;
|
|
PBYTE pbRandomData = NULL;
|
|
|
|
if( ppbChallengeData == NULL ||
|
|
pcbChallengeData == NULL ||
|
|
hCryptProv == NULL )
|
|
{
|
|
SetLastError(dwStatus = ERROR_INVALID_PARAMETER);
|
|
goto cleanup;
|
|
}
|
|
|
|
pbRandomData = (PBYTE)LocalAlloc(LPTR, dwLen * 2);
|
|
if(pbRandomData == NULL)
|
|
{
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// generate two random 128 bit data
|
|
//
|
|
bSuccess = CryptGenRandom(
|
|
hCryptProv,
|
|
dwLen,
|
|
pbRandomData
|
|
);
|
|
|
|
if(bSuccess == TRUE)
|
|
{
|
|
memcpy(
|
|
pbRandomData + dwLen,
|
|
pbRandomData,
|
|
dwLen
|
|
);
|
|
|
|
bSuccess = CryptGenRandom(
|
|
hCryptProv,
|
|
dwLen,
|
|
pbRandomData + dwLen
|
|
);
|
|
}
|
|
|
|
if(bSuccess == FALSE)
|
|
{
|
|
dwStatus = GetLastError();
|
|
}
|
|
|
|
cleanup:
|
|
|
|
if(dwStatus == ERROR_SUCCESS)
|
|
{
|
|
*ppbChallengeData = pbRandomData;
|
|
*pcbChallengeData = dwLen * 2;
|
|
}
|
|
else
|
|
{
|
|
if(pbRandomData != NULL)
|
|
{
|
|
LocalFree(pbRandomData);
|
|
}
|
|
}
|
|
|
|
return dwStatus;
|
|
}
|
|
|
|
//----------------------------------------------------------------
|
|
|
|
DWORD WINAPI
|
|
TLSEstablishTrustWithServer(
|
|
IN TLS_HANDLE hHandle,
|
|
IN HCRYPTPROV hCryptProv,
|
|
IN DWORD dwClientType,
|
|
OUT PDWORD pdwErrCode
|
|
)
|
|
/*++
|
|
|
|
Abstract:
|
|
|
|
Establish trust relationship with License Server, trust is
|
|
based on two way challenge/response. License Server and LrWiz
|
|
can't use certificate-base trust verification as anyone can get
|
|
TermSrv certificate from registry and also be the administrator
|
|
of system to invoke server side administrative RPC call to mess
|
|
up license server setup. This challenge/response scheme should be
|
|
kept secret (user can reverse engineer to figure out our algorithm
|
|
but this user probably smart enough to alter executable to return
|
|
SUCCESS in all case too.)
|
|
|
|
Parameters:
|
|
|
|
hHandle : Connection handle to License Server.
|
|
hCryptProv : handle to CSP to do hashing.
|
|
dwClientType : Caller type, License Server, LrWiz, or TermSrv.
|
|
pdwErrCode : Pointer to DWORD to receive License Server return code.
|
|
|
|
Return:
|
|
|
|
ERROR_SUCCESS or RPC error code. Caller should also verify pdwErrCode.
|
|
|
|
Note:
|
|
|
|
TermSrv's certificate is issued by license server.
|
|
|
|
--*/
|
|
{
|
|
DWORD dwStatus = ERROR_SUCCESS;
|
|
|
|
PBYTE pbClientRandomChallengeData = NULL;
|
|
DWORD cbClientRandomChallengeData = 0;
|
|
|
|
PBYTE pbChallengeResponseData = NULL;
|
|
DWORD cbChallengeResponseData = 0;
|
|
|
|
TLSCHALLENGEDATA ClientChallengeData;
|
|
TLSCHALLENGERESPONSEDATA* pServerChallengeResponseData=NULL;
|
|
|
|
TLSCHALLENGEDATA* pServerChallengeData=NULL;
|
|
TLSCHALLENGERESPONSEDATA ClientChallengeResponseData;
|
|
|
|
//
|
|
// Verify input parameters
|
|
//
|
|
if(hHandle == NULL || hCryptProv == NULL)
|
|
{
|
|
SetLastError(dwStatus = ERROR_INVALID_PARAMETER);
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// Only three type supported
|
|
//
|
|
if( dwClientType != CLIENT_TYPE_TLSERVER &&
|
|
dwClientType != CLIENT_TYPE_LRWIZ &&
|
|
dwClientType != CLIENT_TYPE_TERMSRV )
|
|
{
|
|
SetLastError(dwStatus = ERROR_INVALID_PARAMETER);
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// Generate a random challenge data
|
|
//
|
|
dwStatus = TLSGenerateRandomChallengeData(
|
|
hCryptProv,
|
|
&pbClientRandomChallengeData,
|
|
&cbClientRandomChallengeData
|
|
);
|
|
|
|
if(dwStatus != ERROR_SUCCESS)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
//
|
|
//
|
|
memset(
|
|
&ClientChallengeData,
|
|
0,
|
|
sizeof(TLSCHALLENGEDATA)
|
|
);
|
|
|
|
memset(
|
|
&ClientChallengeResponseData,
|
|
0,
|
|
sizeof(TLSCHALLENGERESPONSEDATA)
|
|
);
|
|
|
|
//
|
|
// Send this challenge data to server
|
|
//
|
|
ClientChallengeData.dwVersion = TLS_CURRENT_CHALLENGE_VERSION;
|
|
|
|
if (!CryptGenRandom(hCryptProv,sizeof(ClientChallengeData.dwRandom), (BYTE *)&(ClientChallengeData.dwRandom))) {
|
|
dwStatus = GetLastError();
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// This must range from 1 to 128, as it's used as an offset into the
|
|
// challenge data buffer
|
|
//
|
|
|
|
ClientChallengeData.dwRandom %= RANDOM_CHALLENGE_DATASIZE;
|
|
ClientChallengeData.dwRandom++;
|
|
|
|
ClientChallengeData.cbChallengeData = cbClientRandomChallengeData;
|
|
ClientChallengeData.pbChallengeData = pbClientRandomChallengeData;
|
|
|
|
dwStatus = TLSChallengeServer(
|
|
hHandle,
|
|
dwClientType,
|
|
&ClientChallengeData,
|
|
&pServerChallengeResponseData,
|
|
&pServerChallengeData,
|
|
pdwErrCode
|
|
);
|
|
|
|
if(dwStatus != RPC_S_OK || *pdwErrCode >= LSERVER_ERROR_BASE)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
if(pServerChallengeResponseData == NULL || pServerChallengeData == NULL)
|
|
{
|
|
dwStatus = LSERVER_E_INTERNAL_ERROR;
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// Verify Server Challege Data.
|
|
//
|
|
dwStatus = TLSVerifyChallengeResponse(
|
|
hCryptProv,
|
|
dwClientType,
|
|
&ClientChallengeData,
|
|
pServerChallengeResponseData
|
|
);
|
|
|
|
if(dwStatus != ERROR_SUCCESS)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
//
|
|
// Generate Client side responses data
|
|
//
|
|
dwStatus = TLSGenerateChallengeResponseData(
|
|
hCryptProv,
|
|
dwClientType,
|
|
pServerChallengeData,
|
|
&pbChallengeResponseData,
|
|
&cbChallengeResponseData
|
|
);
|
|
if(dwStatus != ERROR_SUCCESS)
|
|
{
|
|
goto cleanup;
|
|
}
|
|
|
|
|
|
//
|
|
// Response to server's challenge
|
|
//
|
|
ClientChallengeResponseData.dwVersion = TLS_CURRENT_CHALLENGE_VERSION;
|
|
ClientChallengeResponseData.cbResponseData = cbChallengeResponseData;
|
|
ClientChallengeResponseData.pbResponseData = pbChallengeResponseData;
|
|
|
|
dwStatus = TLSResponseServerChallenge(
|
|
hHandle,
|
|
&ClientChallengeResponseData,
|
|
pdwErrCode
|
|
);
|
|
|
|
cleanup:
|
|
//
|
|
// Cleanup memory allocated.
|
|
//
|
|
if(pbClientRandomChallengeData != NULL)
|
|
{
|
|
LocalFree(pbClientRandomChallengeData);
|
|
}
|
|
|
|
if(pbChallengeResponseData != NULL)
|
|
{
|
|
LocalFree(pbChallengeResponseData);
|
|
}
|
|
|
|
if(pServerChallengeData != NULL)
|
|
{
|
|
if(pServerChallengeData->pbChallengeData)
|
|
{
|
|
midl_user_free(pServerChallengeData->pbChallengeData);
|
|
}
|
|
|
|
if(pServerChallengeData->pbReservedData)
|
|
{
|
|
midl_user_free(pServerChallengeData->pbReservedData);
|
|
}
|
|
|
|
midl_user_free(pServerChallengeData);
|
|
}
|
|
|
|
if(pServerChallengeResponseData != NULL)
|
|
{
|
|
if(pServerChallengeResponseData->pbResponseData)
|
|
{
|
|
midl_user_free(pServerChallengeResponseData->pbResponseData);
|
|
}
|
|
|
|
if(pServerChallengeResponseData->pbReservedData)
|
|
{
|
|
midl_user_free(pServerChallengeResponseData->pbReservedData);
|
|
}
|
|
|
|
midl_user_free(pServerChallengeResponseData);
|
|
}
|
|
|
|
return dwStatus;
|
|
}
|