Sweden-Number/dlls/crypt32/cert.c

1027 lines
33 KiB
C

/*
* Copyright 2004-2006 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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 <assert.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wincrypt.h"
#include "winnls.h"
#include "rpc.h"
#include "wine/debug.h"
#include "crypt32_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(crypt);
PCRYPT_ATTRIBUTE WINAPI CertFindAttribute(LPCSTR pszObjId, DWORD cAttr,
CRYPT_ATTRIBUTE rgAttr[])
{
PCRYPT_ATTRIBUTE ret = NULL;
DWORD i;
TRACE("%s %ld %p\n", debugstr_a(pszObjId), cAttr, rgAttr);
if (!cAttr)
return NULL;
if (!pszObjId)
{
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
for (i = 0; !ret && i < cAttr; i++)
if (rgAttr[i].pszObjId && !strcmp(pszObjId, rgAttr[i].pszObjId))
ret = &rgAttr[i];
return ret;
}
PCERT_EXTENSION WINAPI CertFindExtension(LPCSTR pszObjId, DWORD cExtensions,
CERT_EXTENSION rgExtensions[])
{
PCERT_EXTENSION ret = NULL;
DWORD i;
TRACE("%s %ld %p\n", debugstr_a(pszObjId), cExtensions, rgExtensions);
if (!cExtensions)
return NULL;
if (!pszObjId)
{
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
for (i = 0; !ret && i < cExtensions; i++)
if (rgExtensions[i].pszObjId && !strcmp(pszObjId,
rgExtensions[i].pszObjId))
ret = &rgExtensions[i];
return ret;
}
PCERT_RDN_ATTR WINAPI CertFindRDNAttr(LPCSTR pszObjId, PCERT_NAME_INFO pName)
{
PCERT_RDN_ATTR ret = NULL;
DWORD i, j;
TRACE("%s %p\n", debugstr_a(pszObjId), pName);
if (!pszObjId)
{
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
for (i = 0; !ret && i < pName->cRDN; i++)
for (j = 0; !ret && j < pName->rgRDN[i].cRDNAttr; j++)
if (pName->rgRDN[i].rgRDNAttr[j].pszObjId && !strcmp(pszObjId,
pName->rgRDN[i].rgRDNAttr[j].pszObjId))
ret = &pName->rgRDN[i].rgRDNAttr[j];
return ret;
}
LONG WINAPI CertVerifyTimeValidity(LPFILETIME pTimeToVerify,
PCERT_INFO pCertInfo)
{
FILETIME fileTime;
LONG ret;
if (!pTimeToVerify)
{
SYSTEMTIME sysTime;
GetSystemTime(&sysTime);
SystemTimeToFileTime(&sysTime, &fileTime);
pTimeToVerify = &fileTime;
}
if ((ret = CompareFileTime(pTimeToVerify, &pCertInfo->NotBefore)) >= 0)
{
ret = CompareFileTime(pTimeToVerify, &pCertInfo->NotAfter);
if (ret < 0)
ret = 0;
}
return ret;
}
BOOL WINAPI CryptHashCertificate(HCRYPTPROV hCryptProv, ALG_ID Algid,
DWORD dwFlags, const BYTE *pbEncoded, DWORD cbEncoded, BYTE *pbComputedHash,
DWORD *pcbComputedHash)
{
BOOL ret = TRUE;
HCRYPTHASH hHash = 0;
TRACE("(%ld, %d, %08lx, %p, %ld, %p, %p)\n", hCryptProv, Algid, dwFlags,
pbEncoded, cbEncoded, pbComputedHash, pcbComputedHash);
if (!hCryptProv)
hCryptProv = CRYPT_GetDefaultProvider();
if (!Algid)
Algid = CALG_SHA1;
if (ret)
{
ret = CryptCreateHash(hCryptProv, Algid, 0, 0, &hHash);
if (ret)
{
ret = CryptHashData(hHash, pbEncoded, cbEncoded, 0);
if (ret)
ret = CryptGetHashParam(hHash, HP_HASHVAL, pbComputedHash,
pcbComputedHash, 0);
CryptDestroyHash(hHash);
}
}
return ret;
}
BOOL WINAPI CryptSignCertificate(HCRYPTPROV hCryptProv, DWORD dwKeySpec,
DWORD dwCertEncodingType, const BYTE *pbEncodedToBeSigned,
DWORD cbEncodedToBeSigned, PCRYPT_ALGORITHM_IDENTIFIER pSignatureAlgorithm,
const void *pvHashAuxInfo, BYTE *pbSignature, DWORD *pcbSignature)
{
BOOL ret;
ALG_ID algID;
HCRYPTHASH hHash;
TRACE("(%08lx, %ld, %ld, %p, %ld, %p, %p, %p, %p)\n", hCryptProv,
dwKeySpec, dwCertEncodingType, pbEncodedToBeSigned, cbEncodedToBeSigned,
pSignatureAlgorithm, pvHashAuxInfo, pbSignature, pcbSignature);
algID = CertOIDToAlgId(pSignatureAlgorithm->pszObjId);
if (!algID)
{
SetLastError(NTE_BAD_ALGID);
return FALSE;
}
if (!hCryptProv)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
ret = CryptCreateHash(hCryptProv, algID, 0, 0, &hHash);
if (ret)
{
ret = CryptHashData(hHash, pbEncodedToBeSigned, cbEncodedToBeSigned, 0);
if (ret)
ret = CryptSignHashW(hHash, dwKeySpec, NULL, 0, pbSignature,
pcbSignature);
CryptDestroyHash(hHash);
}
return ret;
}
BOOL WINAPI CryptVerifyCertificateSignature(HCRYPTPROV hCryptProv,
DWORD dwCertEncodingType, const BYTE *pbEncoded, DWORD cbEncoded,
PCERT_PUBLIC_KEY_INFO pPublicKey)
{
return CryptVerifyCertificateSignatureEx(hCryptProv, dwCertEncodingType,
CRYPT_VERIFY_CERT_SIGN_SUBJECT_BLOB, (void *)pbEncoded,
CRYPT_VERIFY_CERT_SIGN_ISSUER_PUBKEY, pPublicKey, 0, NULL);
}
BOOL WINAPI CryptVerifyCertificateSignatureEx(HCRYPTPROV hCryptProv,
DWORD dwCertEncodingType, DWORD dwSubjectType, void *pvSubject,
DWORD dwIssuerType, void *pvIssuer, DWORD dwFlags, void *pvReserved)
{
BOOL ret = TRUE;
CRYPT_DATA_BLOB subjectBlob;
TRACE("(%08lx, %ld, %ld, %p, %ld, %p, %08lx, %p)\n", hCryptProv,
dwCertEncodingType, dwSubjectType, pvSubject, dwIssuerType, pvIssuer,
dwFlags, pvReserved);
switch (dwSubjectType)
{
case CRYPT_VERIFY_CERT_SIGN_SUBJECT_BLOB:
{
PCRYPT_DATA_BLOB blob = (PCRYPT_DATA_BLOB)pvSubject;
subjectBlob.pbData = blob->pbData;
subjectBlob.cbData = blob->cbData;
break;
}
case CRYPT_VERIFY_CERT_SIGN_SUBJECT_CERT:
{
PCERT_CONTEXT context = (PCERT_CONTEXT)pvSubject;
subjectBlob.pbData = context->pbCertEncoded;
subjectBlob.cbData = context->cbCertEncoded;
break;
}
case CRYPT_VERIFY_CERT_SIGN_SUBJECT_CRL:
{
PCRL_CONTEXT context = (PCRL_CONTEXT)pvSubject;
subjectBlob.pbData = context->pbCrlEncoded;
subjectBlob.cbData = context->cbCrlEncoded;
break;
}
default:
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
ret = FALSE;
}
if (ret)
{
PCERT_SIGNED_CONTENT_INFO signedCert = NULL;
DWORD size = 0;
ret = CryptDecodeObjectEx(dwCertEncodingType, X509_CERT,
subjectBlob.pbData, subjectBlob.cbData,
CRYPT_DECODE_ALLOC_FLAG | CRYPT_DECODE_NOCOPY_FLAG, NULL,
(BYTE *)&signedCert, &size);
if (ret)
{
switch (dwIssuerType)
{
case CRYPT_VERIFY_CERT_SIGN_ISSUER_PUBKEY:
{
PCERT_PUBLIC_KEY_INFO pubKeyInfo =
(PCERT_PUBLIC_KEY_INFO)pvIssuer;
ALG_ID algID = CertOIDToAlgId(pubKeyInfo->Algorithm.pszObjId);
if (algID)
{
HCRYPTKEY key;
ret = CryptImportPublicKeyInfoEx(hCryptProv,
dwCertEncodingType, pubKeyInfo, algID, 0, NULL, &key);
if (ret)
{
HCRYPTHASH hash;
ret = CryptCreateHash(hCryptProv, algID, 0, 0, &hash);
if (ret)
{
ret = CryptHashData(hash,
signedCert->ToBeSigned.pbData,
signedCert->ToBeSigned.cbData, 0);
if (ret)
{
ret = CryptVerifySignatureW(hash,
signedCert->Signature.pbData,
signedCert->Signature.cbData, key, NULL, 0);
}
CryptDestroyHash(hash);
}
CryptDestroyKey(key);
}
}
else
{
SetLastError(NTE_BAD_ALGID);
ret = FALSE;
}
break;
}
case CRYPT_VERIFY_CERT_SIGN_ISSUER_CERT:
case CRYPT_VERIFY_CERT_SIGN_ISSUER_CHAIN:
FIXME("issuer type %ld: stub\n", dwIssuerType);
ret = FALSE;
break;
case CRYPT_VERIFY_CERT_SIGN_ISSUER_NULL:
if (pvIssuer)
{
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
ret = FALSE;
}
else
{
FIXME("unimplemented for NULL signer\n");
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
ret = FALSE;
}
break;
default:
SetLastError(HRESULT_FROM_WIN32(ERROR_INVALID_PARAMETER));
ret = FALSE;
}
LocalFree(signedCert);
}
}
return ret;
}
BOOL WINAPI CertGetEnhancedKeyUsage(PCCERT_CONTEXT pCertContext, DWORD dwFlags,
PCERT_ENHKEY_USAGE pUsage, DWORD *pcbUsage)
{
PCERT_ENHKEY_USAGE usage = NULL;
DWORD bytesNeeded;
BOOL ret = TRUE;
TRACE("(%p, %08lx, %p, %ld)\n", pCertContext, dwFlags, pUsage, *pcbUsage);
if (!pCertContext || !pcbUsage)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
if (!(dwFlags & CERT_FIND_EXT_ONLY_ENHKEY_USAGE_FLAG))
{
DWORD propSize = 0;
if (CertGetCertificateContextProperty(pCertContext,
CERT_ENHKEY_USAGE_PROP_ID, NULL, &propSize))
{
LPBYTE buf = CryptMemAlloc(propSize);
if (buf)
{
if (CertGetCertificateContextProperty(pCertContext,
CERT_ENHKEY_USAGE_PROP_ID, buf, &propSize))
{
ret = CryptDecodeObjectEx(pCertContext->dwCertEncodingType,
X509_ENHANCED_KEY_USAGE, buf, propSize,
CRYPT_ENCODE_ALLOC_FLAG, NULL, &usage, &bytesNeeded);
}
CryptMemFree(buf);
}
}
}
if (!usage && !(dwFlags & CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG))
{
PCERT_EXTENSION ext = CertFindExtension(szOID_ENHANCED_KEY_USAGE,
pCertContext->pCertInfo->cExtension,
pCertContext->pCertInfo->rgExtension);
if (ext)
{
ret = CryptDecodeObjectEx(pCertContext->dwCertEncodingType,
X509_ENHANCED_KEY_USAGE, ext->Value.pbData, ext->Value.cbData,
CRYPT_ENCODE_ALLOC_FLAG, NULL, &usage, &bytesNeeded);
}
}
if (!usage)
{
/* If a particular location is specified, this should fail. Otherwise
* it should succeed with an empty usage. (This is true on Win2k and
* later, which we emulate.)
*/
if (dwFlags)
{
SetLastError(CRYPT_E_NOT_FOUND);
ret = FALSE;
}
else
bytesNeeded = sizeof(CERT_ENHKEY_USAGE);
}
if (ret)
{
if (!pUsage)
*pcbUsage = bytesNeeded;
else if (*pcbUsage < bytesNeeded)
{
SetLastError(ERROR_MORE_DATA);
*pcbUsage = bytesNeeded;
ret = FALSE;
}
else
{
*pcbUsage = bytesNeeded;
if (usage)
{
DWORD i;
LPSTR nextOID = (LPSTR)((LPBYTE)pUsage +
sizeof(CERT_ENHKEY_USAGE) +
usage->cUsageIdentifier * sizeof(LPSTR));
pUsage->cUsageIdentifier = usage->cUsageIdentifier;
pUsage->rgpszUsageIdentifier = (LPSTR *)((LPBYTE)pUsage +
sizeof(CERT_ENHKEY_USAGE));
for (i = 0; i < usage->cUsageIdentifier; i++)
{
pUsage->rgpszUsageIdentifier[i] = nextOID;
strcpy(nextOID, usage->rgpszUsageIdentifier[i]);
nextOID += strlen(nextOID) + 1;
}
}
else
pUsage->cUsageIdentifier = 0;
}
}
if (usage)
LocalFree(usage);
TRACE("returning %d\n", ret);
return ret;
}
BOOL WINAPI CertSetEnhancedKeyUsage(PCCERT_CONTEXT pCertContext,
PCERT_ENHKEY_USAGE pUsage)
{
BOOL ret;
TRACE("(%p, %p)\n", pCertContext, pUsage);
if (pUsage)
{
CRYPT_DATA_BLOB blob = { 0, NULL };
ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_ENHANCED_KEY_USAGE,
pUsage, CRYPT_ENCODE_ALLOC_FLAG, NULL, &blob.pbData, &blob.cbData);
if (ret)
{
ret = CertSetCertificateContextProperty(pCertContext,
CERT_ENHKEY_USAGE_PROP_ID, 0, &blob);
LocalFree(blob.pbData);
}
}
else
ret = CertSetCertificateContextProperty(pCertContext,
CERT_ENHKEY_USAGE_PROP_ID, 0, NULL);
return ret;
}
BOOL WINAPI CertAddEnhancedKeyUsageIdentifier(PCCERT_CONTEXT pCertContext,
LPCSTR pszUsageIdentifier)
{
BOOL ret;
DWORD size;
TRACE("(%p, %s)\n", pCertContext, debugstr_a(pszUsageIdentifier));
if (CertGetEnhancedKeyUsage(pCertContext,
CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, NULL, &size))
{
PCERT_ENHKEY_USAGE usage = CryptMemAlloc(size);
if (usage)
{
ret = CertGetEnhancedKeyUsage(pCertContext,
CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, usage, &size);
if (ret)
{
PCERT_ENHKEY_USAGE newUsage = CryptMemAlloc(size +
sizeof(LPSTR) + strlen(pszUsageIdentifier) + 1);
if (newUsage)
{
LPSTR nextOID;
DWORD i;
newUsage->rgpszUsageIdentifier =
(LPSTR *)((LPBYTE)newUsage + sizeof(CERT_ENHKEY_USAGE));
nextOID = (LPSTR)((LPBYTE)newUsage->rgpszUsageIdentifier +
(usage->cUsageIdentifier + 1) * sizeof(LPSTR));
for (i = 0; i < usage->cUsageIdentifier; i++)
{
newUsage->rgpszUsageIdentifier[i] = nextOID;
strcpy(nextOID, usage->rgpszUsageIdentifier[i]);
nextOID += strlen(nextOID) + 1;
}
newUsage->rgpszUsageIdentifier[i] = nextOID;
strcpy(nextOID, pszUsageIdentifier);
newUsage->cUsageIdentifier = i + 1;
ret = CertSetEnhancedKeyUsage(pCertContext, newUsage);
CryptMemFree(newUsage);
}
}
CryptMemFree(usage);
}
else
ret = FALSE;
}
else
{
PCERT_ENHKEY_USAGE usage = CryptMemAlloc(sizeof(CERT_ENHKEY_USAGE) +
sizeof(LPSTR) + strlen(pszUsageIdentifier) + 1);
if (usage)
{
usage->rgpszUsageIdentifier =
(LPSTR *)((LPBYTE)usage + sizeof(CERT_ENHKEY_USAGE));
usage->rgpszUsageIdentifier[0] = (LPSTR)((LPBYTE)usage +
sizeof(CERT_ENHKEY_USAGE) + sizeof(LPSTR));
strcpy(usage->rgpszUsageIdentifier[0], pszUsageIdentifier);
usage->cUsageIdentifier = 1;
ret = CertSetEnhancedKeyUsage(pCertContext, usage);
CryptMemFree(usage);
}
else
ret = FALSE;
}
return ret;
}
BOOL WINAPI CertRemoveEnhancedKeyUsageIdentifier(PCCERT_CONTEXT pCertContext,
LPCSTR pszUsageIdentifier)
{
BOOL ret;
DWORD size;
CERT_ENHKEY_USAGE usage;
TRACE("(%p, %s)\n", pCertContext, debugstr_a(pszUsageIdentifier));
size = sizeof(usage);
ret = CertGetEnhancedKeyUsage(pCertContext,
CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, &usage, &size);
if (!ret && GetLastError() == ERROR_MORE_DATA)
{
PCERT_ENHKEY_USAGE pUsage = CryptMemAlloc(size);
if (pUsage)
{
ret = CertGetEnhancedKeyUsage(pCertContext,
CERT_FIND_PROP_ONLY_ENHKEY_USAGE_FLAG, pUsage, &size);
if (ret)
{
if (pUsage->cUsageIdentifier)
{
DWORD i;
BOOL found = FALSE;
for (i = 0; i < pUsage->cUsageIdentifier; i++)
{
if (!strcmp(pUsage->rgpszUsageIdentifier[i],
pszUsageIdentifier))
found = TRUE;
if (found && i < pUsage->cUsageIdentifier - 1)
pUsage->rgpszUsageIdentifier[i] =
pUsage->rgpszUsageIdentifier[i + 1];
}
pUsage->cUsageIdentifier--;
/* Remove the usage if it's empty */
if (pUsage->cUsageIdentifier)
ret = CertSetEnhancedKeyUsage(pCertContext, pUsage);
else
ret = CertSetEnhancedKeyUsage(pCertContext, NULL);
}
}
CryptMemFree(pUsage);
}
else
ret = FALSE;
}
else
{
/* it fit in an empty usage, therefore there's nothing to remove */
ret = TRUE;
}
return ret;
}
BOOL WINAPI CertGetValidUsages(DWORD cCerts, PCCERT_CONTEXT *rghCerts,
int *cNumOIDSs, LPSTR *rghOIDs, DWORD *pcbOIDs)
{
BOOL ret = TRUE;
DWORD i, cbOIDs = 0;
BOOL allUsagesValid = TRUE;
CERT_ENHKEY_USAGE validUsages = { 0, NULL };
TRACE("(%ld, %p, %p, %p, %ld)\n", cCerts, *rghCerts, cNumOIDSs,
rghOIDs, *pcbOIDs);
for (i = 0; ret && i < cCerts; i++)
{
CERT_ENHKEY_USAGE usage;
DWORD size = sizeof(usage);
ret = CertGetEnhancedKeyUsage(rghCerts[i], 0, &usage, &size);
/* Success is deliberately ignored: it implies all usages are valid */
if (!ret && GetLastError() == ERROR_MORE_DATA)
{
PCERT_ENHKEY_USAGE pUsage = CryptMemAlloc(size);
allUsagesValid = FALSE;
if (pUsage)
{
ret = CertGetEnhancedKeyUsage(rghCerts[i], 0, pUsage, &size);
if (ret)
{
if (!validUsages.cUsageIdentifier)
{
DWORD j;
cbOIDs = pUsage->cUsageIdentifier * sizeof(LPSTR);
validUsages.cUsageIdentifier = pUsage->cUsageIdentifier;
for (j = 0; j < validUsages.cUsageIdentifier; j++)
cbOIDs += lstrlenA(pUsage->rgpszUsageIdentifier[j])
+ 1;
validUsages.rgpszUsageIdentifier =
CryptMemAlloc(cbOIDs);
if (validUsages.rgpszUsageIdentifier)
{
LPSTR nextOID = (LPSTR)
((LPBYTE)validUsages.rgpszUsageIdentifier +
validUsages.cUsageIdentifier * sizeof(LPSTR));
for (j = 0; j < validUsages.cUsageIdentifier; j++)
{
validUsages.rgpszUsageIdentifier[j] = nextOID;
lstrcpyA(validUsages.rgpszUsageIdentifier[j],
pUsage->rgpszUsageIdentifier[j]);
nextOID += lstrlenA(nextOID) + 1;
}
}
else
ret = FALSE;
}
else
{
DWORD j, k, validIndexes = 0, numRemoved = 0;
/* Merge: build a bitmap of all the indexes of
* validUsages.rgpszUsageIdentifier that are in pUsage.
*/
for (j = 0; j < pUsage->cUsageIdentifier; j++)
{
for (k = 0; k < validUsages.cUsageIdentifier; k++)
{
if (!strcmp(pUsage->rgpszUsageIdentifier[j],
validUsages.rgpszUsageIdentifier[k]))
{
validIndexes |= (1 << k);
break;
}
}
}
/* Merge by removing from validUsages those that are
* not in the bitmap.
*/
for (j = 0; j < validUsages.cUsageIdentifier; j++)
{
if (!(validIndexes & (1 << j)))
{
if (j < validUsages.cUsageIdentifier - 1)
{
memcpy(&validUsages.rgpszUsageIdentifier[j],
&validUsages.rgpszUsageIdentifier[j +
numRemoved + 1],
(validUsages.cUsageIdentifier - numRemoved
- j - 1) * sizeof(LPSTR));
cbOIDs -= lstrlenA(
validUsages.rgpszUsageIdentifier[j]) + 1 +
sizeof(LPSTR);
numRemoved++;
}
else
validUsages.cUsageIdentifier--;
}
}
}
}
CryptMemFree(pUsage);
}
else
ret = FALSE;
}
}
if (ret)
{
if (allUsagesValid)
{
*cNumOIDSs = -1;
*pcbOIDs = 0;
}
else
{
if (!rghOIDs || *pcbOIDs < cbOIDs)
{
*pcbOIDs = cbOIDs;
SetLastError(ERROR_MORE_DATA);
ret = FALSE;
}
else
{
LPSTR nextOID = (LPSTR)((LPBYTE)rghOIDs +
validUsages.cUsageIdentifier * sizeof(LPSTR));
*pcbOIDs = cbOIDs;
*cNumOIDSs = validUsages.cUsageIdentifier;
for (i = 0; i < validUsages.cUsageIdentifier; i++)
{
rghOIDs[i] = nextOID;
lstrcpyA(nextOID, validUsages.rgpszUsageIdentifier[i]);
nextOID += lstrlenA(nextOID) + 1;
}
}
}
}
CryptMemFree(validUsages.rgpszUsageIdentifier);
return ret;
}
/* Sets the CERT_KEY_PROV_INFO_PROP_ID property of context from pInfo, or, if
* pInfo is NULL, from the attributes of hProv.
*/
static void CertContext_SetKeyProvInfo(PCCERT_CONTEXT context,
PCRYPT_KEY_PROV_INFO pInfo, HCRYPTPROV hProv)
{
CRYPT_KEY_PROV_INFO info = { 0 };
BOOL ret;
if (!pInfo)
{
DWORD size;
int len;
ret = CryptGetProvParam(hProv, PP_CONTAINER, NULL, &size, 0);
if (ret)
{
LPSTR szContainer = CryptMemAlloc(size);
if (szContainer)
{
ret = CryptGetProvParam(hProv, PP_CONTAINER, (BYTE *)szContainer,
&size, 0);
if (ret)
{
len = MultiByteToWideChar(CP_ACP, 0, szContainer, -1,
NULL, 0);
if (len)
{
info.pwszContainerName = CryptMemAlloc(len *
sizeof(WCHAR));
len = MultiByteToWideChar(CP_ACP, 0, szContainer, -1,
info.pwszContainerName, len);
}
}
CryptMemFree(szContainer);
}
}
ret = CryptGetProvParam(hProv, PP_NAME, NULL, &size, 0);
if (ret)
{
LPSTR szProvider = CryptMemAlloc(size);
if (szProvider)
{
ret = CryptGetProvParam(hProv, PP_NAME, (BYTE *)szProvider, &size, 0);
if (ret)
{
len = MultiByteToWideChar(CP_ACP, 0, szProvider, -1,
NULL, 0);
if (len)
{
info.pwszProvName = CryptMemAlloc(len *
sizeof(WCHAR));
len = MultiByteToWideChar(CP_ACP, 0, szProvider, -1,
info.pwszProvName, len);
}
}
CryptMemFree(szProvider);
}
}
size = sizeof(info.dwKeySpec);
ret = CryptGetProvParam(hProv, PP_KEYSPEC, (LPBYTE)&info.dwKeySpec,
&size, 0);
if (!ret)
info.dwKeySpec = AT_SIGNATURE;
size = sizeof(info.dwProvType);
ret = CryptGetProvParam(hProv, PP_PROVTYPE, (LPBYTE)&info.dwProvType,
&size, 0);
if (!ret)
info.dwProvType = PROV_RSA_FULL;
pInfo = &info;
}
ret = CertSetCertificateContextProperty(context, CERT_KEY_PROV_INFO_PROP_ID,
0, pInfo);
if (pInfo == &info)
{
CryptMemFree(info.pwszContainerName);
CryptMemFree(info.pwszProvName);
}
}
/* Creates a signed certificate context from the unsigned, encoded certificate
* in blob, using the crypto provider hProv and the signature algorithm sigAlgo.
*/
static PCCERT_CONTEXT CRYPT_CreateSignedCert(PCRYPT_DER_BLOB blob,
HCRYPTPROV hProv, PCRYPT_ALGORITHM_IDENTIFIER sigAlgo)
{
PCCERT_CONTEXT context = NULL;
BOOL ret;
DWORD sigSize = 0;
ret = CryptSignCertificate(hProv, AT_SIGNATURE, X509_ASN_ENCODING,
blob->pbData, blob->cbData, sigAlgo, NULL, NULL, &sigSize);
if (ret)
{
LPBYTE sig = CryptMemAlloc(sigSize);
ret = CryptSignCertificate(hProv, AT_SIGNATURE, X509_ASN_ENCODING,
blob->pbData, blob->cbData, sigAlgo, NULL, sig, &sigSize);
if (ret)
{
CERT_SIGNED_CONTENT_INFO signedInfo;
BYTE *encodedSignedCert = NULL;
DWORD encodedSignedCertSize = 0;
signedInfo.ToBeSigned.cbData = blob->cbData;
signedInfo.ToBeSigned.pbData = blob->pbData;
memcpy(&signedInfo.SignatureAlgorithm, sigAlgo,
sizeof(signedInfo.SignatureAlgorithm));
signedInfo.Signature.cbData = sigSize;
signedInfo.Signature.pbData = sig;
signedInfo.Signature.cUnusedBits = 0;
ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_CERT,
&signedInfo, CRYPT_ENCODE_ALLOC_FLAG, NULL,
(BYTE *)&encodedSignedCert, &encodedSignedCertSize);
if (ret)
{
context = CertCreateCertificateContext(X509_ASN_ENCODING,
encodedSignedCert, encodedSignedCertSize);
LocalFree(encodedSignedCert);
}
}
CryptMemFree(sig);
}
return context;
}
/* Copies data from the parameters into info, where:
* pSubjectIssuerBlob: Specifies both the subject and issuer for info.
* Must not be NULL
* pSignatureAlgorithm: Optional.
* pStartTime: The starting time of the certificate. If NULL, the current
* system time is used.
* pEndTime: The ending time of the certificate. If NULL, one year past the
* starting time is used.
* pubKey: The public key of the certificate. Must not be NULL.
* pExtensions: Extensions to be included with the certificate. Optional.
*/
static void CRYPT_MakeCertInfo(PCERT_INFO info,
PCERT_NAME_BLOB pSubjectIssuerBlob,
PCRYPT_ALGORITHM_IDENTIFIER pSignatureAlgorithm, PSYSTEMTIME pStartTime,
PSYSTEMTIME pEndTime, PCERT_PUBLIC_KEY_INFO pubKey,
PCERT_EXTENSIONS pExtensions)
{
/* FIXME: what serial number to use? */
static const BYTE serialNum[] = { 1 };
assert(info);
assert(pSubjectIssuerBlob);
assert(pubKey);
info->dwVersion = CERT_V3;
info->SerialNumber.cbData = sizeof(serialNum);
info->SerialNumber.pbData = (LPBYTE)serialNum;
if (pSignatureAlgorithm)
memcpy(&info->SignatureAlgorithm, pSignatureAlgorithm,
sizeof(info->SignatureAlgorithm));
else
{
info->SignatureAlgorithm.pszObjId = szOID_RSA_SHA1RSA;
info->SignatureAlgorithm.Parameters.cbData = 0;
info->SignatureAlgorithm.Parameters.pbData = NULL;
}
info->Issuer.cbData = pSubjectIssuerBlob->cbData;
info->Issuer.pbData = pSubjectIssuerBlob->pbData;
if (pStartTime)
SystemTimeToFileTime(pStartTime, &info->NotBefore);
else
GetSystemTimeAsFileTime(&info->NotBefore);
if (pEndTime)
SystemTimeToFileTime(pStartTime, &info->NotBefore);
else
{
SYSTEMTIME endTime;
if (FileTimeToSystemTime(&info->NotBefore, &endTime))
{
endTime.wYear++;
SystemTimeToFileTime(&endTime, &info->NotAfter);
}
}
info->Subject.cbData = pSubjectIssuerBlob->cbData;
info->Subject.pbData = pSubjectIssuerBlob->pbData;
memcpy(&info->SubjectPublicKeyInfo, pubKey,
sizeof(info->SubjectPublicKeyInfo));
if (pExtensions)
{
info->cExtension = pExtensions->cExtension;
info->rgExtension = pExtensions->rgExtension;
}
else
{
info->cExtension = 0;
info->rgExtension = NULL;
}
}
typedef RPC_STATUS (RPC_ENTRY *UuidCreateFunc)(UUID *);
typedef RPC_STATUS (RPC_ENTRY *UuidToStringFunc)(UUID *, unsigned char **);
typedef RPC_STATUS (RPC_ENTRY *RpcStringFreeFunc)(unsigned char **);
static HCRYPTPROV CRYPT_CreateKeyProv(void)
{
HCRYPTPROV hProv = 0;
HMODULE rpcrt = LoadLibraryA("rpcrt4");
if (rpcrt)
{
UuidCreateFunc uuidCreate = (UuidCreateFunc)GetProcAddress(rpcrt,
"UuidCreate");
UuidToStringFunc uuidToString = (UuidToStringFunc)GetProcAddress(rpcrt,
"UuidToString");
RpcStringFreeFunc rpcStringFree = (RpcStringFreeFunc)GetProcAddress(
rpcrt, "RpcStringFree");
if (uuidCreate && uuidToString && rpcStringFree)
{
UUID uuid;
RPC_STATUS status = uuidCreate(&uuid);
if (status == RPC_S_OK || status == RPC_S_UUID_LOCAL_ONLY)
{
unsigned char *uuidStr;
status = uuidToString(&uuid, &uuidStr);
if (status == RPC_S_OK)
{
BOOL ret = CryptAcquireContextA(&hProv, (LPCSTR)uuidStr,
MS_DEF_PROV_A, PROV_RSA_FULL, CRYPT_NEWKEYSET);
if (ret)
{
HCRYPTKEY key;
ret = CryptGenKey(hProv, AT_SIGNATURE, 0, &key);
if (ret)
CryptDestroyKey(key);
}
rpcStringFree(&uuidStr);
}
}
}
FreeLibrary(rpcrt);
}
return hProv;
}
PCCERT_CONTEXT WINAPI CertCreateSelfSignCertificate(HCRYPTPROV hProv,
PCERT_NAME_BLOB pSubjectIssuerBlob, DWORD dwFlags,
PCRYPT_KEY_PROV_INFO pKeyProvInfo,
PCRYPT_ALGORITHM_IDENTIFIER pSignatureAlgorithm, PSYSTEMTIME pStartTime,
PSYSTEMTIME pEndTime, PCERT_EXTENSIONS pExtensions)
{
PCCERT_CONTEXT context = NULL;
BOOL ret, releaseContext = FALSE;
PCERT_PUBLIC_KEY_INFO pubKey = NULL;
DWORD pubKeySize = 0;
TRACE("(0x%08lx, %p, %08lx, %p, %p, %p, %p, %p)\n", hProv,
pSubjectIssuerBlob, dwFlags, pKeyProvInfo, pSignatureAlgorithm, pStartTime,
pExtensions, pExtensions);
if (!hProv)
{
hProv = CRYPT_CreateKeyProv();
releaseContext = TRUE;
}
CryptExportPublicKeyInfo(hProv, AT_SIGNATURE, X509_ASN_ENCODING, NULL,
&pubKeySize);
pubKey = CryptMemAlloc(pubKeySize);
if (pubKey)
{
ret = CryptExportPublicKeyInfo(hProv, AT_SIGNATURE, X509_ASN_ENCODING,
pubKey, &pubKeySize);
if (ret)
{
CERT_INFO info = { 0 };
CRYPT_DER_BLOB blob = { 0, NULL };
BOOL ret;
CRYPT_MakeCertInfo(&info, pSubjectIssuerBlob, pSignatureAlgorithm,
pStartTime, pEndTime, pubKey, pExtensions);
ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_CERT_TO_BE_SIGNED,
&info, CRYPT_ENCODE_ALLOC_FLAG, NULL, (BYTE *)&blob.pbData,
&blob.cbData);
if (ret)
{
if (!(dwFlags & CERT_CREATE_SELFSIGN_NO_SIGN))
context = CRYPT_CreateSignedCert(&blob, hProv,
&info.SignatureAlgorithm);
else
context = CertCreateCertificateContext(X509_ASN_ENCODING,
blob.pbData, blob.cbData);
if (context && !(dwFlags & CERT_CREATE_SELFSIGN_NO_KEY_INFO))
CertContext_SetKeyProvInfo(context, pKeyProvInfo, hProv);
LocalFree(blob.pbData);
}
}
CryptMemFree(pubKey);
}
if (releaseContext)
CryptReleaseContext(hProv, 0);
return context;
}