internal static X509Certificate2Collection GetCertificates(Cryptography.SafeCertStoreHandle safeCertStoreHandle)
{
X509Certificate2Collection collection = new X509Certificate2Collection();
IntPtr pEnumContext = CAPI.CertEnumCertificatesInStore(safeCertStoreHandle, IntPtr.Zero);
while (pEnumContext != IntPtr.Zero)
{
X509Certificate2 certificate = new X509Certificate2(pEnumContext);
collection.Add(certificate);
pEnumContext = CAPI.CertEnumCertificatesInStore(safeCertStoreHandle, pEnumContext);
}
return(collection);
}
internal static Cryptography.SafeCertStoreHandle ExportToMemoryStore(X509Certificate2Collection collection)
{
//
// We need to Assert all StorePermission flags since this is a memory store and we want
// semi-trusted code to be able to export certificates to a memory store.
//
#if !FEATURE_CORESYSTEM
StorePermission sp = new StorePermission(StorePermissionFlags.AllFlags);
sp.Assert();
#endif
Cryptography.SafeCertStoreHandle safeCertStoreHandle = Cryptography.SafeCertStoreHandle.InvalidHandle;
// we always want to use CERT_STORE_ENUM_ARCHIVED_FLAG since we want to preserve the collection in this operation.
// By default, Archived certificates will not be included.
safeCertStoreHandle = CAPI.CertOpenStore(new IntPtr(CAPI.CERT_STORE_PROV_MEMORY),
CAPI.X509_ASN_ENCODING | CAPI.PKCS_7_ASN_ENCODING,
IntPtr.Zero,
CAPI.CERT_STORE_ENUM_ARCHIVED_FLAG | CAPI.CERT_STORE_CREATE_NEW_FLAG,
null);
if (safeCertStoreHandle == null || safeCertStoreHandle.IsInvalid)
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
//
// We use CertAddCertificateLinkToStore to keep a link to the original store, so any property changes get
// applied to the original store. This has a limit of 99 links per cert context however.
//
foreach (X509Certificate2 x509 in collection)
{
if (!CAPI.CertAddCertificateLinkToStore(safeCertStoreHandle,
x509.CertContext,
CAPI.CERT_STORE_ADD_ALWAYS,
Cryptography.SafeCertContextHandle.InvalidHandle))
{
throw new CryptographicException(Marshal.GetLastWin32Error());
}
}
return(safeCertStoreHandle);
}
