trunk/OpenPGPminidriverTest/CryptoOperations.cpp

/*      OpenPGP Smart Card Mini Driver
    Copyright (C) 2009 Vincent Le Toux

    This library is Free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License version 2.1 as published by the Free Software Foundation.

    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 <windows.h>
#include <tchar.h>
#include <cardmod.h>
#include "global.h"

DWORD GenerateNewKey(DWORD dwIndex)
{
        DWORD dwReturn, dwKeySpec;
        PIN_ID  PinId;
        __try
        {
                 if (!pCardData)
                {
                        dwReturn = SCARD_E_COMM_DATA_LOST;
                        __leave;
                }
                switch(dwIndex)
                {
                case 0: //Signature,
                        dwKeySpec = AT_SIGNATURE;
                        PinId = ROLE_USER;
                        break;
                case 1: //Authentication,
                        dwKeySpec = AT_SIGNATURE;
                        PinId = 3;
                        break;
                case 2: // Confidentiality,
                        dwKeySpec = AT_KEYEXCHANGE;
                        PinId = 4;
                        break;
                default:
                        dwReturn = SCARD_E_UNEXPECTED;
                        __leave;
                }
                dwReturn = pCardData->pfnCardCreateContainerEx(pCardData, (BYTE) dwIndex, 
                                                                                        CARD_CREATE_CONTAINER_KEY_GEN, 
                                                                                        dwKeySpec, 1024, NULL, PinId);
        }
        __finally
        {
        }
        return dwReturn;
}

#pragma pack(push,1)
typedef struct _RSAPUBLICKEYBLOB
{
        BLOBHEADER blobheader;
        RSAPUBKEY rsapubkey;
        BYTE modulus[sizeof(DWORD)];
} RSAPUBLICKEYBLOB, *PRSAPUBLICKEYBLOB;
#pragma pack(pop)

DWORD ImportKey(DWORD dwIndex)
{
        DWORD dwReturn, dwKeySpec;
        PIN_ID  PinId;
        HCRYPTPROV hProv = NULL;
        HCRYPTKEY hKey = NULL;
        TCHAR szContainerName[] = OPENPGP_TEST_CONTAINER;
        BYTE pbData[4096];
        BYTE pbDataControl[4096];
        BYTE pbBlobRef[4096];
        DWORD dwDataSize = ARRAYSIZE(pbData);
        DWORD dwBlobRefSize = ARRAYSIZE(pbBlobRef);
        BOOL bStatus;
        CONTAINER_INFO  ContainerInfo;
        PRSAPUBLICKEYBLOB pBlob, pBlobRef;
        DWORD dwAglLen, dwSize;
        __try
        {
                 if (!pCardData)
                {
                        dwReturn = SCARD_E_COMM_DATA_LOST;
                        __leave;
                }
                switch(dwIndex)
                {
                case 0: //Signature,
                        dwKeySpec = AT_SIGNATURE;
                        PinId = ROLE_USER;
                        break;
                case 1: //Authentication,
                        dwKeySpec = AT_SIGNATURE;
                        PinId = 3;
                        break;
                case 2: // Confidentiality,
                        dwKeySpec = AT_KEYEXCHANGE;
                        PinId = 4;
                        break;
                default:
                        dwReturn = SCARD_E_UNEXPECTED;
                        __leave;
                }
                bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, 0);
                if (!bStatus) 
                {
                        dwReturn = GetLastError();
                        if (dwReturn == NTE_BAD_KEYSET)
                        {
                                bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_NEWKEYSET);
                        }
                        if (!bStatus) 
                        {
                                dwReturn = GetLastError();
                                __leave;
                        }
                }
                bStatus = CryptGenKey(hProv, dwKeySpec, CRYPT_EXPORTABLE, &hKey);
                if (!bStatus) 
                {
                        dwReturn = GetLastError();
                        __leave;
                }
                bStatus = CryptExportKey(hKey,  NULL, PRIVATEKEYBLOB, 0, pbData, &dwDataSize);
                if (!bStatus) 
                {
                        dwReturn = GetLastError();
                        __leave;
                }
                memcpy(pbDataControl, pbData, ARRAYSIZE(pbData));
                dwSize = sizeof(DWORD);
                bStatus = CryptGetKeyParam(hKey, KP_KEYLEN, (PBYTE) &dwAglLen,&dwSize , 0);
                dwReturn = pCardData->pfnCardCreateContainerEx(pCardData, (BYTE) dwIndex, 
                                                                                        CARD_CREATE_CONTAINER_KEY_IMPORT, 
                                                                                        dwKeySpec, dwAglLen, pbData, PinId);
                if (dwReturn)
                {
                        __leave;
                }
                // check if the buffer has been altered
                if (memcmp(pbDataControl,pbData, ARRAYSIZE(pbData)) != 0)
                {
                        dwReturn = SCARD_E_UNEXPECTED;
                        __leave;
                }

                memset(&ContainerInfo,0,sizeof(CONTAINER_INFO));
                ContainerInfo.dwVersion = 0;
                dwReturn = pCardData->pfnCardGetContainerInfo(pCardData, (BYTE) dwIndex, 0, &ContainerInfo);
                if (dwReturn)
                {
                        __leave;
                }
                bStatus = CryptExportKey(hKey,  NULL, PUBLICKEYBLOB, 0, pbBlobRef, &dwBlobRefSize);
                if (!bStatus) 
                {
                        dwReturn = GetLastError();
                        __leave;
                }
                pBlobRef = (PRSAPUBLICKEYBLOB) pbBlobRef;
                pBlob = (PRSAPUBLICKEYBLOB) (dwKeySpec==AT_SIGNATURE ? ContainerInfo.pbSigPublicKey : ContainerInfo.pbKeyExPublicKey);
                //if (memcmp(pBlobRef, pBlob, ContainerInfo.cbSigPublicKey) != 0)
                for (DWORD dwI = 0; dwI < pBlobRef->rsapubkey.bitlen / 8; dwI++)
                {
                        if ( pBlobRef->modulus[dwI] != pBlob->modulus[dwI])
                        {
                                dwReturn = SCARD_E_UNEXPECTED;
                                __leave;
                        }
                }
                dwReturn = 0;

        }
        __finally
        {
                if (hKey)
                        CryptDestroyKey(hKey);
                //CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_DELETEKEYSET);
                if (hProv)
                        CryptReleaseContext(hProv,0);
        }
        return dwReturn;
}

DWORD SetTheSameKeyForAllContainers()
{
        DWORD dwReturn, dwKeySpec;
        PIN_ID  PinId;
        HCRYPTPROV hProv = NULL;
        HCRYPTKEY hKey = NULL;
        TCHAR szContainerName[] = OPENPGP_TEST_CONTAINER;
        BYTE pbData[4096];
        BYTE pbDataControl[4096];
        BYTE pbBlobRef[4096];
        DWORD dwDataSize = ARRAYSIZE(pbData);
        DWORD dwBlobRefSize = ARRAYSIZE(pbBlobRef);
        BOOL bStatus;
        CONTAINER_INFO  ContainerInfo;
        PRSAPUBLICKEYBLOB pBlob, pBlobRef;
        DWORD dwAglLen, dwSize, dwIndex;
        __try
        {
                 if (!pCardData)
                {
                        dwReturn = SCARD_E_COMM_DATA_LOST;
                        __leave;
                }
                bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, 0);
                if (!bStatus) 
                {
                        dwReturn = GetLastError();
                        if (dwReturn == NTE_BAD_KEYSET)
                        {
                                bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_NEWKEYSET);
                        }
                        if (!bStatus) 
                        {
                                dwReturn = GetLastError();
                                __leave;
                        }
                }
                bStatus = CryptGenKey(hProv, AT_SIGNATURE, CRYPT_EXPORTABLE, &hKey);
                if (!bStatus) 
                {
                        dwReturn = GetLastError();
                        __leave;
                }
                bStatus = CryptExportKey(hKey,  NULL, PRIVATEKEYBLOB, 0, pbData, &dwDataSize);
                if (!bStatus) 
                {
                        dwReturn = GetLastError();
                        __leave;
                }
                memcpy(pbDataControl, pbData, ARRAYSIZE(pbData));
                dwSize = sizeof(DWORD);
                bStatus = CryptGetKeyParam(hKey, KP_KEYLEN, (PBYTE) &dwAglLen,&dwSize , 0);

                for(dwIndex = 0; dwIndex < 3; dwIndex++)
                {
                        switch(dwIndex)
                        {
                        case 0: //Signature,
                                dwKeySpec = AT_SIGNATURE;
                                PinId = ROLE_USER;
                                break;
                        case 1: //Authentication,
                                dwKeySpec = AT_SIGNATURE;
                                PinId = 3;
                                break;
                        case 2: // Confidentiality,
                                dwKeySpec = AT_KEYEXCHANGE;
                                PinId = 4;
                                break;
                        default:
                                dwReturn = SCARD_E_UNEXPECTED;
                                __leave;
                        }

                        dwReturn = pCardData->pfnCardCreateContainerEx(pCardData, (BYTE) dwIndex, 
                                                                                                CARD_CREATE_CONTAINER_KEY_IMPORT, 
                                                                                                dwKeySpec, dwAglLen, pbData, PinId);
                        if (dwReturn)
                        {
                                __leave;
                        }
                        // check if the buffer has been altered
                        if (memcmp(pbDataControl,pbData, ARRAYSIZE(pbData)) != 0)
                        {
                                dwReturn = SCARD_E_UNEXPECTED;
                                __leave;
                        }

                        memset(&ContainerInfo,0,sizeof(CONTAINER_INFO));
                        ContainerInfo.dwVersion = 0;
                        dwReturn = pCardData->pfnCardGetContainerInfo(pCardData, (BYTE) dwIndex, 0, &ContainerInfo);
                        if (dwReturn)
                        {
                                __leave;
                        }
                        bStatus = CryptExportKey(hKey,  NULL, PUBLICKEYBLOB, 0, pbBlobRef, &dwBlobRefSize);
                        if (!bStatus) 
                        {
                                dwReturn = GetLastError();
                                __leave;
                        }
                        pBlobRef = (PRSAPUBLICKEYBLOB) pbBlobRef;
                        pBlob = (PRSAPUBLICKEYBLOB) (dwKeySpec==AT_SIGNATURE ? ContainerInfo.pbSigPublicKey : ContainerInfo.pbKeyExPublicKey);
                        //if (memcmp(pBlobRef, pBlob, ContainerInfo.cbSigPublicKey) != 0)
                        for (DWORD dwI = 0; dwI < pBlobRef->rsapubkey.bitlen / 8; dwI++)
                        {
                                if ( pBlobRef->modulus[dwI] != pBlob->modulus[dwI])
                                {
                                        dwReturn = SCARD_E_UNEXPECTED;
                                        __leave;
                                }
                        }
                }
                dwReturn = 0;

        }
        __finally
        {
                if (hKey)
                        CryptDestroyKey(hKey);
                //CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_DELETEKEYSET);
                if (hProv)
                        CryptReleaseContext(hProv,0);
        }
        return dwReturn;
}
1	vletoux	1	/* OpenPGP Smart Card Mini Driver
2			Copyright (C) 2009 Vincent Le Toux
3
4			This library is Free software; you can redistribute it and/or
5			modify it under the terms of the GNU Lesser General Public
6			License version 2.1 as published by the Free Software Foundation.
7
8			This library is distributed in the hope that it will be useful,
9			but WITHOUT ANY WARRANTY; without even the implied warranty of
10			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11			Lesser General Public License for more details.
12
13			You should have received a copy of the GNU Lesser General Public
14			License along with this library; if not, write to the Free Software
15			Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16			*/
17
18			#include <windows.h>
19			#include <tchar.h>
20			#include <cardmod.h>
21			#include "global.h"
22
23			DWORD GenerateNewKey(DWORD dwIndex)
24			{
25			DWORD dwReturn, dwKeySpec;
26			PIN_ID PinId;
27			__try
28			{
29			if (!pCardData)
30			{
31			dwReturn = SCARD_E_COMM_DATA_LOST;
32			__leave;
33			}
34			switch(dwIndex)
35			{
36			case 0: //Signature,
37			dwKeySpec = AT_SIGNATURE;
38			PinId = ROLE_USER;
39			break;
40			case 1: //Authentication,
41			dwKeySpec = AT_SIGNATURE;
42			PinId = 3;
43			break;
44			case 2: // Confidentiality,
45			dwKeySpec = AT_KEYEXCHANGE;
46			PinId = 4;
47			break;
48			default:
49			dwReturn = SCARD_E_UNEXPECTED;
50			__leave;
51			}
52			dwReturn = pCardData->pfnCardCreateContainerEx(pCardData, (BYTE) dwIndex,
53			CARD_CREATE_CONTAINER_KEY_GEN,
54			dwKeySpec, 1024, NULL, PinId);
55			}
56			__finally
57			{
58			}
59			return dwReturn;
60			}
61
62	vletoux	3	#pragma pack(push,1)
63			typedef struct _RSAPUBLICKEYBLOB
64			{
65			BLOBHEADER blobheader;
66			RSAPUBKEY rsapubkey;
67			BYTE modulus[sizeof(DWORD)];
68			} RSAPUBLICKEYBLOB, *PRSAPUBLICKEYBLOB;
69			#pragma pack(pop)
70
71	vletoux	1	DWORD ImportKey(DWORD dwIndex)
72			{
73			DWORD dwReturn, dwKeySpec;
74			PIN_ID PinId;
75			HCRYPTPROV hProv = NULL;
76			HCRYPTKEY hKey = NULL;
77	vletoux	3	TCHAR szContainerName[] = OPENPGP_TEST_CONTAINER;
78	vletoux	1	BYTE pbData[4096];
79	vletoux	5	BYTE pbDataControl[4096];
80	vletoux	3	BYTE pbBlobRef[4096];
81	vletoux	1	DWORD dwDataSize = ARRAYSIZE(pbData);
82	vletoux	3	DWORD dwBlobRefSize = ARRAYSIZE(pbBlobRef);
83	vletoux	1	BOOL bStatus;
84	vletoux	3	CONTAINER_INFO ContainerInfo;
85			PRSAPUBLICKEYBLOB pBlob, pBlobRef;
86			DWORD dwAglLen, dwSize;
87	vletoux	1	__try
88			{
89			if (!pCardData)
90			{
91			dwReturn = SCARD_E_COMM_DATA_LOST;
92			__leave;
93			}
94			switch(dwIndex)
95			{
96			case 0: //Signature,
97			dwKeySpec = AT_SIGNATURE;
98			PinId = ROLE_USER;
99			break;
100			case 1: //Authentication,
101			dwKeySpec = AT_SIGNATURE;
102			PinId = 3;
103			break;
104			case 2: // Confidentiality,
105			dwKeySpec = AT_KEYEXCHANGE;
106			PinId = 4;
107			break;
108			default:
109			dwReturn = SCARD_E_UNEXPECTED;
110			__leave;
111			}
112	vletoux	3	bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, 0);
113	vletoux	1	if (!bStatus)
114			{
115			dwReturn = GetLastError();
116	vletoux	3	if (dwReturn == NTE_BAD_KEYSET)
117			{
118			bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_NEWKEYSET);
119			}
120			if (!bStatus)
121			{
122			dwReturn = GetLastError();
123			__leave;
124			}
125	vletoux	1	}
126	vletoux	3	bStatus = CryptGenKey(hProv, dwKeySpec, CRYPT_EXPORTABLE, &hKey);
127	vletoux	1	if (!bStatus)
128			{
129			dwReturn = GetLastError();
130			__leave;
131			}
132			bStatus = CryptExportKey(hKey, NULL, PRIVATEKEYBLOB, 0, pbData, &dwDataSize);
133			if (!bStatus)
134			{
135			dwReturn = GetLastError();
136			__leave;
137			}
138	vletoux	5	memcpy(pbDataControl, pbData, ARRAYSIZE(pbData));
139	vletoux	3	dwSize = sizeof(DWORD);
140			bStatus = CryptGetKeyParam(hKey, KP_KEYLEN, (PBYTE) &dwAglLen,&dwSize , 0);
141	vletoux	1	dwReturn = pCardData->pfnCardCreateContainerEx(pCardData, (BYTE) dwIndex,
142			CARD_CREATE_CONTAINER_KEY_IMPORT,
143	vletoux	3	dwKeySpec, dwAglLen, pbData, PinId);
144			if (dwReturn)
145			{
146			__leave;
147			}
148	vletoux	5	// check if the buffer has been altered
149			if (memcmp(pbDataControl,pbData, ARRAYSIZE(pbData)) != 0)
150			{
151			dwReturn = SCARD_E_UNEXPECTED;
152			__leave;
153			}
154
155	vletoux	3	memset(&ContainerInfo,0,sizeof(CONTAINER_INFO));
156			ContainerInfo.dwVersion = 0;
157			dwReturn = pCardData->pfnCardGetContainerInfo(pCardData, (BYTE) dwIndex, 0, &ContainerInfo);
158			if (dwReturn)
159			{
160			__leave;
161			}
162			bStatus = CryptExportKey(hKey, NULL, PUBLICKEYBLOB, 0, pbBlobRef, &dwBlobRefSize);
163			if (!bStatus)
164			{
165			dwReturn = GetLastError();
166			__leave;
167			}
168			pBlobRef = (PRSAPUBLICKEYBLOB) pbBlobRef;
169	vletoux	5	pBlob = (PRSAPUBLICKEYBLOB) (dwKeySpec==AT_SIGNATURE ? ContainerInfo.pbSigPublicKey : ContainerInfo.pbKeyExPublicKey);
170	vletoux	3	//if (memcmp(pBlobRef, pBlob, ContainerInfo.cbSigPublicKey) != 0)
171			for (DWORD dwI = 0; dwI < pBlobRef->rsapubkey.bitlen / 8; dwI++)
172			{
173			if ( pBlobRef->modulus[dwI] != pBlob->modulus[dwI])
174			{
175			dwReturn = SCARD_E_UNEXPECTED;
176			__leave;
177			}
178			}
179			dwReturn = 0;
180
181	vletoux	1	}
182			__finally
183			{
184			if (hKey)
185			CryptDestroyKey(hKey);
186	vletoux	3	//CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_DELETEKEYSET);
187			if (hProv)
188			CryptReleaseContext(hProv,0);
189	vletoux	1	}
190			return dwReturn;
191	vletoux	5	}
192
193			DWORD SetTheSameKeyForAllContainers()
194			{
195			DWORD dwReturn, dwKeySpec;
196			PIN_ID PinId;
197			HCRYPTPROV hProv = NULL;
198			HCRYPTKEY hKey = NULL;
199			TCHAR szContainerName[] = OPENPGP_TEST_CONTAINER;
200			BYTE pbData[4096];
201			BYTE pbDataControl[4096];
202			BYTE pbBlobRef[4096];
203			DWORD dwDataSize = ARRAYSIZE(pbData);
204			DWORD dwBlobRefSize = ARRAYSIZE(pbBlobRef);
205			BOOL bStatus;
206			CONTAINER_INFO ContainerInfo;
207			PRSAPUBLICKEYBLOB pBlob, pBlobRef;
208			DWORD dwAglLen, dwSize, dwIndex;
209			__try
210			{
211			if (!pCardData)
212			{
213			dwReturn = SCARD_E_COMM_DATA_LOST;
214			__leave;
215			}
216			bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, 0);
217			if (!bStatus)
218			{
219			dwReturn = GetLastError();
220			if (dwReturn == NTE_BAD_KEYSET)
221			{
222			bStatus = CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_NEWKEYSET);
223			}
224			if (!bStatus)
225			{
226			dwReturn = GetLastError();
227			__leave;
228			}
229			}
230			bStatus = CryptGenKey(hProv, AT_SIGNATURE, CRYPT_EXPORTABLE, &hKey);
231			if (!bStatus)
232			{
233			dwReturn = GetLastError();
234			__leave;
235			}
236			bStatus = CryptExportKey(hKey, NULL, PRIVATEKEYBLOB, 0, pbData, &dwDataSize);
237			if (!bStatus)
238			{
239			dwReturn = GetLastError();
240			__leave;
241			}
242			memcpy(pbDataControl, pbData, ARRAYSIZE(pbData));
243			dwSize = sizeof(DWORD);
244			bStatus = CryptGetKeyParam(hKey, KP_KEYLEN, (PBYTE) &dwAglLen,&dwSize , 0);
245
246			for(dwIndex = 0; dwIndex < 3; dwIndex++)
247			{
248			switch(dwIndex)
249			{
250			case 0: //Signature,
251			dwKeySpec = AT_SIGNATURE;
252			PinId = ROLE_USER;
253			break;
254			case 1: //Authentication,
255			dwKeySpec = AT_SIGNATURE;
256			PinId = 3;
257			break;
258			case 2: // Confidentiality,
259			dwKeySpec = AT_KEYEXCHANGE;
260			PinId = 4;
261			break;
262			default:
263			dwReturn = SCARD_E_UNEXPECTED;
264			__leave;
265			}
266
267			dwReturn = pCardData->pfnCardCreateContainerEx(pCardData, (BYTE) dwIndex,
268			CARD_CREATE_CONTAINER_KEY_IMPORT,
269			dwKeySpec, dwAglLen, pbData, PinId);
270			if (dwReturn)
271			{
272			__leave;
273			}
274			// check if the buffer has been altered
275			if (memcmp(pbDataControl,pbData, ARRAYSIZE(pbData)) != 0)
276			{
277			dwReturn = SCARD_E_UNEXPECTED;
278			__leave;
279			}
280
281			memset(&ContainerInfo,0,sizeof(CONTAINER_INFO));
282			ContainerInfo.dwVersion = 0;
283			dwReturn = pCardData->pfnCardGetContainerInfo(pCardData, (BYTE) dwIndex, 0, &ContainerInfo);
284			if (dwReturn)
285			{
286			__leave;
287			}
288			bStatus = CryptExportKey(hKey, NULL, PUBLICKEYBLOB, 0, pbBlobRef, &dwBlobRefSize);
289			if (!bStatus)
290			{
291			dwReturn = GetLastError();
292			__leave;
293			}
294			pBlobRef = (PRSAPUBLICKEYBLOB) pbBlobRef;
295			pBlob = (PRSAPUBLICKEYBLOB) (dwKeySpec==AT_SIGNATURE ? ContainerInfo.pbSigPublicKey : ContainerInfo.pbKeyExPublicKey);
296			//if (memcmp(pBlobRef, pBlob, ContainerInfo.cbSigPublicKey) != 0)
297			for (DWORD dwI = 0; dwI < pBlobRef->rsapubkey.bitlen / 8; dwI++)
298			{
299			if ( pBlobRef->modulus[dwI] != pBlob->modulus[dwI])
300			{
301			dwReturn = SCARD_E_UNEXPECTED;
302			__leave;
303			}
304			}
305			}
306			dwReturn = 0;
307
308			}
309			__finally
310			{
311			if (hKey)
312			CryptDestroyKey(hKey);
313			//CryptAcquireContext(&hProv, szContainerName, MS_ENHANCED_PROV, PROV_RSA_FULL, CRYPT_DELETEKEYSET);
314			if (hProv)
315			CryptReleaseContext(hProv,0);
316			}
317			return dwReturn;
318	vletoux	1	}