public Stream Encode(string key, Stream dataStream)
{
SymmetricAlgorithm provider = null;
ICryptoTransform encryptor = null;
Stream stream = null;
try
{
provider = GetCryptoProvider(null);
encryptor = provider.CreateEncryptor();
stream = new CryptoStream(dataStream, encryptor, CryptoStreamMode.Write);
return stream.WriteSalt(key).DisposeTogetherWith(provider, encryptor);
}
catch
{
try
{
if (provider != null)
provider.Dispose();
}
catch { }
try
{
if (encryptor != null)
encryptor.Dispose();
}
catch { }
try
{
if (stream != null)
stream.Dispose();
}
catch { }
throw;
}
}
