The performance concern of AES (RijndaelManaged) in .NET [closed]

Question

I intend to encrypt large data (around 3-5 MB) with RijndaelManaged. Is there any performance issue\suggestion on doing so?

Thanks

        RijndaelManaged rijndaelCipher = new RijndaelManaged();
        rijndaelCipher.Mode = CipherMode.CBC;
        rijndaelCipher.Padding = PaddingMode.PKCS7;
        rijndaelCipher.KeySize = 128;
        rijndaelCipher.BlockSize = 128;

Answer 1

No I can safely say there will not be any performance issues. Here's what I timed (And this includes some disk access:

00:00:00.26 seconds for 2MB

Like I said faster than you can blink: see wiki