Pkcs7CertificateStore(IntPtr handle, Crypt32.CRYPTOAPI_BLOB blob)
{
_handle = handle;
try
{
_blob = blob;
_store = new X509Store(_handle);
}
catch
{
//We need to manually clean up the handle here. If we throw here for whatever reason,
//we'll leak the handle because we'll have a partially constructed object that won't get
//a finalizer called on or anything to dispose of.
FreeHandle();
throw;
}
}
public static Pkcs7CertificateStore Create(byte[] data)
{
const string STORE_TYPE = "PKCS7";
var dataPtr = Marshal.AllocHGlobal(data.Length);
Marshal.Copy(data, 0, dataPtr, data.Length);
var blob = new Crypt32.CRYPTOAPI_BLOB
{
cbData = (uint)data.Length,
pbData = dataPtr
};
var handle = Crypt32.CertOpenStore(STORE_TYPE, Crypt32.CertEncodingType.NONE, IntPtr.Zero, Crypt32.CertOpenStoreFlags.NONE, ref blob);
if (handle == IntPtr.Zero)
{
throw new InvalidOperationException("Failed to create a memory certificate store.");
}
return(new Pkcs7CertificateStore(handle, blob));
}