689 lines
20 KiB
C
689 lines
20 KiB
C
/*++
|
|
|
|
Copyright (c) 1994-1999 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
tsrvsec.c
|
|
|
|
Abstract:
|
|
|
|
Contains functions that are required to establish secure channel between
|
|
client and server.
|
|
|
|
Author:
|
|
|
|
Madan Appiah (madana) 1-Jan-1999
|
|
|
|
Environment:
|
|
|
|
User Mode - Win32
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include <tsrv.h>
|
|
#include <tsrvinfo.h>
|
|
#include <tsrvsec.h>
|
|
#include <_tsrvinfo.h>
|
|
|
|
#include <at128.h>
|
|
#include <at120ex.h>
|
|
#include <tlsapi.h>
|
|
|
|
//-----------------------------------------------------------------------------
|
|
//
|
|
// Local functions
|
|
//
|
|
//-----------------------------------------------------------------------------
|
|
|
|
NTSTATUS
|
|
AppendSecurityData(
|
|
IN PTSRVINFO pTSrvInfo,
|
|
IN OUT PUSERDATAINFO *ppUserDataInfo,
|
|
IN BOOLEAN bGetCert,
|
|
OUT PVOID *ppSecInfo
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This function generates a server random key, saves it in the TShare Server
|
|
info structure. It also retrieves the server Public Key Certificate to pass
|
|
to the client. Later it appends the server random key and server CERT to the
|
|
pUserDataInfo structure which is passed to the client as connection response
|
|
data.
|
|
|
|
Arguments:
|
|
|
|
pTSrvInfo - pointer to a server info structure
|
|
pUserDataInfo - pointer to location of user data
|
|
bGetCert - indicates whether or not to retrieve the server certification
|
|
ppSecInfo - pointer to the security info within the user data buffer
|
|
|
|
Return Value:
|
|
|
|
NT Status Code.
|
|
|
|
--*/
|
|
{
|
|
NTSTATUS ntStatus = STATUS_UNSUCCESSFUL;
|
|
PUSERDATAINFO pUserDataInfo;
|
|
BOOL bError;
|
|
DWORD dwError;
|
|
DWORD dwCurrentLen;
|
|
DWORD dwNewLen;
|
|
PRNS_UD_SC_SEC1 pSecInfo = NULL;
|
|
PBYTE pNextData;
|
|
GCCOctetString FAR *pOctString;
|
|
LPBYTE pbServerCert = NULL;
|
|
DWORD cbServerCert;
|
|
LICENSE_STATUS Status = LICENSE_STATUS_OK;
|
|
|
|
pUserDataInfo = *ppUserDataInfo;
|
|
|
|
TS_ASSERT( pTSrvInfo != NULL );
|
|
TS_ASSERT( pUserDataInfo != NULL );
|
|
|
|
//
|
|
// generate a server random key.
|
|
// serialize this call across mutiple caller.
|
|
//
|
|
|
|
EnterCriticalSection( &g_TSrvCritSect );
|
|
|
|
bError =
|
|
TSCAPI_GenerateRandomBits(
|
|
(LPBYTE)pTSrvInfo->SecurityInfo.KeyPair.serverRandom,
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.serverRandom) );
|
|
|
|
if( !bError ) {
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
|
|
dwError = ERROR_INVALID_DATA;
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Unable to generate random key, %D\n", dwError));
|
|
goto Cleanup;
|
|
}
|
|
// Return a pointer to the start of the security data
|
|
pSecInfo = (PRNS_UD_SC_SEC1)
|
|
((LPBYTE)pUserDataInfo + (pUserDataInfo->cbSize - sizeof(RNS_UD_SC_SEC)));
|
|
|
|
// note only a RNS_UD_SC_SEC structure is copied to the user info structure
|
|
// when encryption is not enabled. Note that we signify B3 shadow encryption
|
|
// disabled as a method of 0xffffffff.
|
|
if ((pSecInfo->encryptionMethod == 0) ||
|
|
(pSecInfo->encryptionMethod == 0xffffffff)) {
|
|
dwError = ERROR_SUCCESS;
|
|
pTSrvInfo->bSecurityEnabled = FALSE;
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
goto Cleanup;
|
|
}
|
|
|
|
pTSrvInfo->bSecurityEnabled = TRUE;
|
|
|
|
// Only allocate and return the random + cert when we are going to send it
|
|
// to a client. This does not happen for the shadow passthru stack
|
|
if (bGetCert) {
|
|
if( RNS_TERMSRV_40_UD_VERSION >= pUserDataInfo->version )
|
|
{
|
|
pTSrvInfo->SecurityInfo.CertType = CERT_TYPE_PROPRIETORY;
|
|
|
|
}
|
|
else
|
|
{
|
|
pTSrvInfo->SecurityInfo.CertType = CERT_TYPE_X509;
|
|
}
|
|
|
|
//
|
|
// Find our the certificate type to transmit to the client.
|
|
// If it is a Hydra 4.0 RTM client then we will use the old proprietory
|
|
// format certificate. Otherwise, we will use the X509 certificate.
|
|
//
|
|
|
|
//
|
|
// Get the Hydra server certificate if we haven't already done so.
|
|
//
|
|
|
|
if( CERT_TYPE_PROPRIETORY == pTSrvInfo->SecurityInfo.CertType )
|
|
{
|
|
//
|
|
// Get the proprietory certificate
|
|
//
|
|
|
|
Status = TLSGetTSCertificate(
|
|
pTSrvInfo->SecurityInfo.CertType,
|
|
&pbServerCert,
|
|
&cbServerCert );
|
|
|
|
if( LICENSE_STATUS_OK != Status )
|
|
{
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
dwError = ERROR_INVALID_DATA;
|
|
goto Cleanup;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Status = TLSGetTSCertificate(
|
|
pTSrvInfo->SecurityInfo.CertType,
|
|
&pbServerCert,
|
|
&cbServerCert );
|
|
|
|
//
|
|
// if we don't yet have the X509 certificate, use the proprietory
|
|
// certificate
|
|
//
|
|
|
|
if( LICENSE_STATUS_OK != Status )
|
|
{
|
|
pTSrvInfo->SecurityInfo.CertType = CERT_TYPE_PROPRIETORY;
|
|
|
|
Status = TLSGetTSCertificate(
|
|
pTSrvInfo->SecurityInfo.CertType,
|
|
&pbServerCert,
|
|
&cbServerCert );
|
|
}
|
|
|
|
if( LICENSE_STATUS_OK != Status )
|
|
{
|
|
//
|
|
// other reasons for failing to get the certificate
|
|
//
|
|
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
dwError = ERROR_INVALID_DATA;
|
|
goto Cleanup;
|
|
}
|
|
}
|
|
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
|
|
TS_ASSERT( pbServerCert != NULL );
|
|
TS_ASSERT( cbServerCert != 0 );
|
|
|
|
//
|
|
// compute the new data size required.
|
|
//
|
|
|
|
dwCurrentLen = pUserDataInfo->cbSize;
|
|
dwNewLen =
|
|
dwCurrentLen +
|
|
cbServerCert +
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.serverRandom) +
|
|
sizeof(RNS_UD_SC_SEC1) - sizeof(RNS_UD_SC_SEC);
|
|
|
|
//
|
|
// check to see we have enough room in the current allotted block.
|
|
//
|
|
// Note: previously we allotted this memory in multiples of 128 bytes
|
|
// blocks.
|
|
//
|
|
|
|
dwCurrentLen =
|
|
(dwCurrentLen % 128) ?
|
|
((dwCurrentLen/128) + 1) * 128 :
|
|
dwCurrentLen;
|
|
|
|
if( dwNewLen > dwCurrentLen ) {
|
|
PUSERDATAINFO pUserDataInfoNew;
|
|
|
|
dwNewLen =
|
|
(dwNewLen % 128) ?
|
|
((dwNewLen/128) + 1) * 128 :
|
|
dwNewLen;
|
|
|
|
|
|
pUserDataInfoNew = TShareRealloc( pUserDataInfo, dwNewLen );
|
|
|
|
if( pUserDataInfoNew == NULL ) {
|
|
dwError = ERROR_NOT_ENOUGH_MEMORY;
|
|
goto Cleanup;
|
|
}
|
|
else {
|
|
pUserDataInfo = pUserDataInfoNew;
|
|
}
|
|
|
|
*ppUserDataInfo = pUserDataInfo;
|
|
}
|
|
|
|
TS_ASSERT( dwNewLen >= dwCurrentLen );
|
|
|
|
//
|
|
// now we have enough room in the user data buffer for security data, copy
|
|
// security data and adjust length fields.
|
|
//
|
|
|
|
pSecInfo = (PRNS_UD_SC_SEC1)
|
|
((LPBYTE)pUserDataInfo +
|
|
(pUserDataInfo->cbSize) - sizeof(RNS_UD_SC_SEC) );
|
|
// note only RNS_UD_SC_SEC structure is copied to the user info
|
|
// structure.
|
|
|
|
TS_ASSERT( pSecInfo->header.length == sizeof(RNS_UD_SC_SEC) );
|
|
TS_ASSERT( pSecInfo->encryptionMethod != 0 );
|
|
|
|
//
|
|
// new security packet length.
|
|
//
|
|
|
|
pSecInfo->header.length =
|
|
sizeof(RNS_UD_SC_SEC1) +
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.serverRandom) +
|
|
(unsigned short)cbServerCert;
|
|
|
|
pSecInfo->serverRandomLen = sizeof(pTSrvInfo->SecurityInfo.KeyPair.serverRandom);
|
|
pSecInfo->serverCertLen = cbServerCert;
|
|
|
|
pNextData = (LPBYTE)pSecInfo + sizeof(RNS_UD_SC_SEC1);
|
|
|
|
//
|
|
// append server random.
|
|
//
|
|
|
|
memcpy(
|
|
pNextData,
|
|
(LPBYTE)pTSrvInfo->SecurityInfo.KeyPair.serverRandom,
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.serverRandom) );
|
|
|
|
pNextData += sizeof(pTSrvInfo->SecurityInfo.KeyPair.serverRandom);
|
|
|
|
//
|
|
// copy certificate blob now.
|
|
//
|
|
|
|
memcpy( pNextData, pbServerCert, cbServerCert );
|
|
|
|
//
|
|
// Free the cert
|
|
//
|
|
TLSFreeTSCertificate(pbServerCert);
|
|
pbServerCert = NULL;
|
|
|
|
//
|
|
// now adjust other other length fields.
|
|
//
|
|
|
|
pUserDataInfo->cbSize +=
|
|
(pSecInfo->header.length - sizeof(RNS_UD_SC_SEC));
|
|
|
|
//
|
|
// compute the octet string pointer.
|
|
//
|
|
|
|
pOctString = (GCCOctetString FAR *)
|
|
((LPBYTE)pUserDataInfo +
|
|
(UINT_PTR)pUserDataInfo->rgUserData[0].octet_string);
|
|
|
|
pOctString->octet_string_length +=
|
|
(pSecInfo->header.length - sizeof(RNS_UD_SC_SEC));
|
|
}
|
|
else {
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
}
|
|
|
|
//
|
|
// we are done.
|
|
//
|
|
dwError = ERROR_SUCCESS;
|
|
|
|
Cleanup:
|
|
|
|
if (NULL != pbServerCert)
|
|
TLSFreeTSCertificate(pbServerCert);
|
|
|
|
// return the pointer values since the data may have been realloc'd
|
|
*ppUserDataInfo = pUserDataInfo;
|
|
*ppSecInfo = pSecInfo;
|
|
|
|
if( dwError != ERROR_SUCCESS ) {
|
|
|
|
TRACE((DEBUG_TSHRSRV_DEBUG,
|
|
"TShrSRV: AppendSecurityData failed, %d\n", dwError ));
|
|
|
|
return( STATUS_UNSUCCESSFUL );
|
|
}
|
|
|
|
return( STATUS_SUCCESS );
|
|
}
|
|
|
|
|
|
NTSTATUS
|
|
SendSecurityData(IN HANDLE hStack, IN PVOID pvSecInfo)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This function sends the previously constructed shadow security data
|
|
(cert + server random) to the client server in response to a shadow request.
|
|
|
|
Arguments:
|
|
|
|
hStack - handle to the appropriate stack.
|
|
pTSrvInfo - pointer to a server info structure.
|
|
|
|
Return Value:
|
|
|
|
NT Status Code.
|
|
|
|
--*/
|
|
{
|
|
PRNS_UD_SC_SEC1 pSecInfo = (PRNS_UD_SC_SEC1) pvSecInfo;
|
|
ULONG secInfoSize, ulBytesReturned;
|
|
NTSTATUS ntStatus = STATUS_UNSUCCESSFUL;
|
|
|
|
//
|
|
// There will only be a random + cert in the case we are encrypting
|
|
//
|
|
if (pSecInfo->encryptionLevel != 0) {
|
|
secInfoSize = sizeof(RNS_UD_SC_SEC1) +
|
|
pSecInfo->serverRandomLen +
|
|
pSecInfo->serverCertLen;
|
|
}
|
|
else {
|
|
pSecInfo->serverRandomLen = 0;
|
|
pSecInfo->serverCertLen = 0;
|
|
secInfoSize = sizeof(RNS_UD_SC_SEC1);
|
|
}
|
|
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Encryption level: %ld, Method: %lx, "
|
|
"cert[%ld] + random[%ld] + header[%ld]: size=%ld\n",
|
|
pSecInfo->encryptionLevel, pSecInfo->encryptionMethod,
|
|
pSecInfo->encryptionLevel != 0 ? pSecInfo->serverCertLen : 0,
|
|
pSecInfo->encryptionLevel != 0 ? pSecInfo->serverRandomLen : 0,
|
|
sizeof(RNS_UD_SC_SEC1), secInfoSize));
|
|
|
|
//
|
|
// issue the IOCTL_TSHARE_SEND_CERT_DATA if this is not a B3 server
|
|
//
|
|
if (pSecInfo->encryptionMethod != 0xFFFFFFFF) {
|
|
ntStatus = IcaStackIoControl(hStack,
|
|
IOCTL_TSHARE_SEND_CERT_DATA,
|
|
pSecInfo,
|
|
secInfoSize,
|
|
NULL, 0, &ulBytesReturned);
|
|
|
|
if (NT_SUCCESS(ntStatus)) {
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Sent shadow cert[%ld] + random[%ld] + header[%ld]: size=%ld\n",
|
|
pSecInfo->encryptionLevel != 0 ? pSecInfo->serverCertLen : 0,
|
|
pSecInfo->encryptionLevel != 0 ? pSecInfo->serverRandomLen : 0,
|
|
sizeof(RNS_UD_SC_SEC1),
|
|
secInfoSize));
|
|
}
|
|
else {
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Send shadow cert + random failed: size=%ld, rc=%lx\n",
|
|
secInfoSize, ntStatus));
|
|
}
|
|
}
|
|
|
|
// Grandfather in the old B3 shadow requests which do not support
|
|
// an encrypted shadow pipe
|
|
else {
|
|
ntStatus = STATUS_SUCCESS;
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Grandfathering old B3 shadow request\n"));
|
|
}
|
|
|
|
return ntStatus;
|
|
}
|
|
|
|
/****************************************************************************/
|
|
//
|
|
// CreateSessionKeys()
|
|
//
|
|
// Purpose: Exchange client/server randoms and create
|
|
// session keys.
|
|
//
|
|
// Parameters:
|
|
// IN [hStack] - which stack
|
|
// IN [pTSrvInfo] - TShareSrv object
|
|
// IN PrevStatus - Status for send. If not success, we send null data to the
|
|
// WD to indicate the session key was bad and allow release of the session
|
|
// key event wait.
|
|
//
|
|
// Return: STATUS_SUCCESS - Success
|
|
// other - Failure
|
|
//
|
|
// History: 4/26/99 jparsons Created
|
|
// 9/24/1999 erikma Added PrevStatus to remove deadlock
|
|
/****************************************************************************/
|
|
NTSTATUS CreateSessionKeys(
|
|
IN HANDLE hStack,
|
|
IN PTSRVINFO pTSrvInfo,
|
|
IN NTSTATUS PrevStatus)
|
|
{
|
|
NTSTATUS ntStatus;
|
|
DWORD dwBytesReturned;
|
|
|
|
TRACE((DEBUG_TSHRSRV_NORMAL, "TShrSRV: Sending sec info to WD\n"));
|
|
|
|
if (NT_SUCCESS(PrevStatus)) {
|
|
ntStatus = IcaStackIoControl(
|
|
hStack,
|
|
IOCTL_TSHARE_SET_SEC_DATA,
|
|
(LPBYTE)&pTSrvInfo->SecurityInfo,
|
|
sizeof(pTSrvInfo->SecurityInfo),
|
|
NULL,
|
|
0,
|
|
&dwBytesReturned);
|
|
}
|
|
else {
|
|
ntStatus = IcaStackIoControl(hStack, IOCTL_TSHARE_SET_SEC_DATA,
|
|
NULL, 0, NULL, 0, &dwBytesReturned);
|
|
}
|
|
|
|
if (NT_SUCCESS(ntStatus)) {
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Session key transmission succeeded, PrevStatus=%X\n",
|
|
PrevStatus));
|
|
}
|
|
else {
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Session key transmission failed: rc=%lx, "
|
|
"PrevStatus=%X\n", ntStatus, PrevStatus));
|
|
}
|
|
|
|
return ntStatus;
|
|
}
|
|
|
|
|
|
//*************************************************************
|
|
//
|
|
// GetClientRandom()
|
|
//
|
|
// Purpose: Receive the encrypted client random & decrypt
|
|
//
|
|
// Parameters: IN [hStack] - which stack
|
|
// IN [pTSrvInfo] - TShareSrv object
|
|
// IN [ulTimeout] - msec to wait before timing out
|
|
// IN [bShadow] - indicates a shadow setup
|
|
//
|
|
// Return: STATUS_SUCCESS - Success
|
|
// other - Failure
|
|
//
|
|
// History: 4/26/99 jparsons Created
|
|
//
|
|
//*************************************************************
|
|
|
|
NTSTATUS
|
|
GetClientRandom(HANDLE hStack,
|
|
PTSRVINFO pTSrvInfo,
|
|
LONG ulTimeout,
|
|
BOOLEAN bShadow) {
|
|
|
|
NTSTATUS ntStatus;
|
|
DWORD dwBytesReturned;
|
|
BYTE abEncryptedClientRandom[512];
|
|
BYTE abClientRandom[512];
|
|
DWORD dwClientRandomBufLen;
|
|
SECURITYTIMEOUT securityTimeout;
|
|
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Waiting to receive client random: msec=%ld\n", ulTimeout));
|
|
|
|
securityTimeout.ulTimeout = ulTimeout;
|
|
ntStatus =
|
|
IcaStackIoControl(
|
|
hStack,
|
|
bShadow ? IOCTL_TSHARE_GET_CLIENT_RANDOM :
|
|
IOCTL_TSHARE_GET_SEC_DATA,
|
|
&securityTimeout,
|
|
sizeof(securityTimeout),
|
|
(LPBYTE)abEncryptedClientRandom,
|
|
sizeof(abEncryptedClientRandom),
|
|
&dwBytesReturned);
|
|
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Received encrypted client random, rc=%lx\n",
|
|
ntStatus));
|
|
|
|
if (NT_SUCCESS(ntStatus)) {
|
|
|
|
TS_ASSERT(
|
|
dwBytesReturned <= sizeof(abEncryptedClientRandom) );
|
|
|
|
//
|
|
// decrypt client random.
|
|
//
|
|
|
|
dwClientRandomBufLen = sizeof(abClientRandom);
|
|
|
|
EnterCriticalSection( &g_TSrvCritSect );
|
|
if (LsCsp_DecryptEnvelopedData(
|
|
pTSrvInfo->SecurityInfo.CertType,
|
|
(LPBYTE)abEncryptedClientRandom,
|
|
dwBytesReturned,
|
|
(LPBYTE)abClientRandom,
|
|
&dwClientRandomBufLen)) {
|
|
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Decrypted client random: rc=%lx\n", ntStatus));
|
|
|
|
|
|
TS_ASSERT( dwClientRandomBufLen >=
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.clientRandom) );
|
|
|
|
//
|
|
// Make sure we got enough data!
|
|
//
|
|
if( dwClientRandomBufLen >=
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.clientRandom) ) {
|
|
|
|
//
|
|
// copy decrypted data, only the part we need.
|
|
//
|
|
|
|
memcpy(
|
|
(LPBYTE)pTSrvInfo->SecurityInfo.KeyPair.clientRandom,
|
|
(LPBYTE)abClientRandom,
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.clientRandom) );
|
|
}
|
|
else {
|
|
ntStatus = STATUS_UNSUCCESSFUL;
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Client random key size: expected [%ld], got [%ld]\n",
|
|
sizeof(pTSrvInfo->SecurityInfo.KeyPair.clientRandom,
|
|
dwClientRandomBufLen)));
|
|
}
|
|
}
|
|
else {
|
|
LeaveCriticalSection(&g_TSrvCritSect);
|
|
ntStatus = STATUS_UNSUCCESSFUL;
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Could not decrypt client random: rc=%lx\n", ntStatus));
|
|
}
|
|
}
|
|
else {
|
|
ntStatus = STATUS_UNSUCCESSFUL;
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Failed to receive encrypted client random, rc=%lx\n",
|
|
ntStatus));
|
|
}
|
|
|
|
return ntStatus;
|
|
}
|
|
|
|
|
|
//*************************************************************
|
|
//
|
|
// SendClientRandom()
|
|
//
|
|
// Purpose: Encrypt and send the shadow random
|
|
//
|
|
// Return: STATUS_SUCCESS - Success
|
|
// other - Failure
|
|
//
|
|
// History: 4/26/99 jparsons Created
|
|
//
|
|
//*************************************************************
|
|
|
|
NTSTATUS
|
|
SendClientRandom(HANDLE hStack,
|
|
CERT_TYPE certType,
|
|
PBYTE pbServerPublicKey,
|
|
ULONG serverPublicKeyLen,
|
|
PBYTE pbRandomKey,
|
|
ULONG randomKeyLen)
|
|
{
|
|
NTSTATUS ntStatus = STATUS_SUCCESS;
|
|
BOOL status;
|
|
|
|
BYTE encClientRandom[CLIENT_RANDOM_MAX_SIZE]; // Largest possible key size
|
|
ULONG encClientRandomLen;
|
|
ULONG ulBytesReturned;
|
|
|
|
//
|
|
// encrypt the client random key. Serialize this call across mutiple
|
|
// callers since the bogus routines are not multithread safe!
|
|
//
|
|
EnterCriticalSection( &g_TSrvCritSect );
|
|
encClientRandomLen = sizeof(encClientRandom);
|
|
status = EncryptClientRandom(
|
|
pbServerPublicKey,
|
|
serverPublicKeyLen,
|
|
pbRandomKey,
|
|
randomKeyLen,
|
|
encClientRandom,
|
|
&encClientRandomLen);
|
|
|
|
LeaveCriticalSection( &g_TSrvCritSect );
|
|
|
|
// Send the encrypted client random to the server
|
|
if (NT_SUCCESS(status)) {
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Attempting to send shadow client random: enc len=%ld\n",
|
|
encClientRandomLen));
|
|
|
|
ntStatus = IcaStackIoControl(hStack,
|
|
IOCTL_TSHARE_SEND_CLIENT_RANDOM,
|
|
encClientRandom,
|
|
encClientRandomLen,
|
|
NULL, 0, &ulBytesReturned);
|
|
if (NT_SUCCESS(ntStatus)) {
|
|
TRACE((DEBUG_TSHRSRV_NORMAL,
|
|
"TShrSRV: Sent shadow client random: len=%ld\n",
|
|
encClientRandomLen));
|
|
}
|
|
else {
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Send shadow client random failed: len=%ld, rc=%lx\n",
|
|
encClientRandomLen, ntStatus));
|
|
|
|
}
|
|
}
|
|
else {
|
|
TRACE((DEBUG_TSHRSRV_ERROR,
|
|
"TShrSRV: Could not encrypt shadow client random! rc=%lx\n",
|
|
status));
|
|
ntStatus = STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
return ntStatus;
|
|
}
|