private V1AxCryptDataStream CreateEncryptedDataStream(Stream inputStream, long cipherTextLength)
{
if (_reader.CurrentItemType != AxCryptItemType.Data)
{
throw new InvalidOperationException("An attempt to create an encrypted data stream was made when the reader is not positioned at the data.");
}
_reader.SetEndOfStream();
_expectedTotalHmacLength = _hmacStream.Position + cipherTextLength;
V1AxCryptDataStream encryptedDataStream = new V1AxCryptDataStream(inputStream, _hmacStream, cipherTextLength);
return(encryptedDataStream);
}