private void ReadCbc(Stream inputStream)
{
BigEndianBinaryReader reader = new BigEndianBinaryReader(inputStream, Encoding.ASCII, true);
reader.Read(_iv, 0, EncryptionIvCbcSize);
byte[] encryptedData = new byte[inputStream.Length - EncryptionIvCbcSize];
reader.Read(encryptedData, 0, encryptedData.Length);
Data = CryptographyUtility.DecryptAesCbc(new MemoryStream(encryptedData), _key, _iv);
}