public X509Certificate(IntPtr handle)
{
Pal = CertificatePal.FromHandle(handle);
}
private static ICertificatePal FromBlobOrFile(ReadOnlySpan <byte> rawData, string?fileName, SafePasswordHandle password, X509KeyStorageFlags keyStorageFlags)
{
Debug.Assert(!rawData.IsEmpty || fileName != null);
Debug.Assert(password != null);
bool loadFromFile = (fileName != null);
Interop.Crypt32.PfxCertStoreFlags pfxCertStoreFlags = MapKeyStorageFlags(keyStorageFlags);
bool deleteKeyContainer = false;
Interop.Crypt32.CertEncodingType msgAndCertEncodingType;
Interop.Crypt32.ContentType contentType;
Interop.Crypt32.FormatType formatType;
SafeCertStoreHandle? hCertStore = null;
SafeCryptMsgHandle? hCryptMsg = null;
SafeCertContextHandle?pCertContext = null;
try
{
unsafe
{
fixed(byte *pRawData = rawData)
{
fixed(char *pFileName = fileName)
{
Interop.Crypt32.DATA_BLOB certBlob = new Interop.Crypt32.DATA_BLOB(new IntPtr(pRawData), (uint)(loadFromFile ? 0 : rawData.Length));
Interop.Crypt32.CertQueryObjectType objectType = loadFromFile ? Interop.Crypt32.CertQueryObjectType.CERT_QUERY_OBJECT_FILE : Interop.Crypt32.CertQueryObjectType.CERT_QUERY_OBJECT_BLOB;
void *pvObject = loadFromFile ? (void *)pFileName : (void *)&certBlob;
bool success = Interop.Crypt32.CryptQueryObject(
objectType,
pvObject,
X509ExpectedContentTypeFlags,
X509ExpectedFormatTypeFlags,
0,
out msgAndCertEncodingType,
out contentType,
out formatType,
out hCertStore,
out hCryptMsg,
out pCertContext
);
if (!success)
{
int hr = Marshal.GetHRForLastWin32Error();
throw hr.ToCryptographicException();
}
}
}
if (contentType == Interop.Crypt32.ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED || contentType == Interop.Crypt32.ContentType.CERT_QUERY_CONTENT_PKCS7_SIGNED_EMBED)
{
pCertContext = GetSignerInPKCS7Store(hCertStore, hCryptMsg);
}
else if (contentType == Interop.Crypt32.ContentType.CERT_QUERY_CONTENT_PFX)
{
if (loadFromFile)
{
rawData = File.ReadAllBytes(fileName !);
}
pCertContext = FilterPFXStore(rawData, password, pfxCertStoreFlags);
// If PersistKeySet is set we don't delete the key, so that it persists.
// If EphemeralKeySet is set we don't delete the key, because there's no file, so it's a wasteful call.
const X509KeyStorageFlags DeleteUnless =
X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.EphemeralKeySet;
deleteKeyContainer = ((keyStorageFlags & DeleteUnless) == 0);
}
CertificatePal pal = new CertificatePal(pCertContext, deleteKeyContainer);
pCertContext = null;
return(pal);
}
}
finally
{
if (hCertStore != null)
{
hCertStore.Dispose();
}
if (hCryptMsg != null)
{
hCryptMsg.Dispose();
}
if (pCertContext != null)
{
pCertContext.Dispose();
}
}
}
private CertificatePal(CertificatePal copyFrom)
{
// Use _certContext (instead of CertContext) to keep the original context handle from being
// finalized until all cert copies are no longer referenced.
_certContext = new SafeCertContextHandle(copyFrom._certContext);
}
/// <summary>
/// Does not throw on error. Returns null ChainPal instead.
/// </summary>
internal static partial IChainPal?BuildChain(
bool useMachineContext,
ICertificatePal cert,
X509Certificate2Collection?extraStore,
OidCollection?applicationPolicy,
OidCollection?certificatePolicy,
X509RevocationMode revocationMode,
X509RevocationFlag revocationFlag,
X509Certificate2Collection?customTrustStore,
X509ChainTrustMode trustMode,
DateTime verificationTime,
TimeSpan timeout,
bool disableAia)
{
CertificatePal certificatePal = (CertificatePal)cert;
unsafe
{
using (SafeChainEngineHandle storeHandle = GetChainEngine(trustMode, customTrustStore, useMachineContext))
using (SafeCertStoreHandle extraStoreHandle = ConvertStoreToSafeHandle(extraStore))
{
Interop.Crypt32.CERT_CHAIN_PARA chainPara = default;
chainPara.cbSize = Marshal.SizeOf <Interop.Crypt32.CERT_CHAIN_PARA>();
int applicationPolicyCount;
using (SafeHandle applicationPolicyOids = applicationPolicy !.ToLpstrArray(out applicationPolicyCount))
{
if (!applicationPolicyOids.IsInvalid)
{
chainPara.RequestedUsage.dwType = Interop.Crypt32.CertUsageMatchType.USAGE_MATCH_TYPE_AND;
chainPara.RequestedUsage.Usage.cUsageIdentifier = applicationPolicyCount;
chainPara.RequestedUsage.Usage.rgpszUsageIdentifier = applicationPolicyOids.DangerousGetHandle();
}
int certificatePolicyCount;
using (SafeHandle certificatePolicyOids = certificatePolicy !.ToLpstrArray(out certificatePolicyCount))
{
if (!certificatePolicyOids.IsInvalid)
{
chainPara.RequestedIssuancePolicy.dwType = Interop.Crypt32.CertUsageMatchType.USAGE_MATCH_TYPE_AND;
chainPara.RequestedIssuancePolicy.Usage.cUsageIdentifier = certificatePolicyCount;
chainPara.RequestedIssuancePolicy.Usage.rgpszUsageIdentifier = certificatePolicyOids.DangerousGetHandle();
}
chainPara.dwUrlRetrievalTimeout = (int)Math.Floor(timeout.TotalMilliseconds);
Interop.Crypt32.FILETIME ft = Interop.Crypt32.FILETIME.FromDateTime(verificationTime);
Interop.Crypt32.CertChainFlags flags = MapRevocationFlags(revocationMode, revocationFlag, disableAia);
SafeX509ChainHandle chain;
using (SafeCertContextHandle certContext = certificatePal.GetCertContext())
{
if (!Interop.Crypt32.CertGetCertificateChain(storeHandle.DangerousGetHandle(), certContext, &ft, extraStoreHandle, ref chainPara, flags, IntPtr.Zero, out chain))
{
chain.Dispose();
return(null);
}
}
return(new ChainPal(chain));
}
}
}
}
}