Public Class ModifiedRijndael 
   Inherits System.Security.Cryptography.SymmetricAlgorithm

public class ModifiedRijndael : System.Security.Cryptography.SymmetricAlgorithm 

RijndaelManaged r = new RijndaelManaged();

foreach (int blksz in AllKeySizes(r.LegalBlockSizes))
{
    r.BlockSize = blksz;
    r.GenerateIV();

    foreach (int keysz in AllKeySizes(r.LegalKeySizes))
    {
        r.KeySize = keysz;
        r.GenerateKey();

        ModifiedRijndael modified = ModifiedRijndael.Create(typeof(ModifiedRijndael).FullName);
        modified.BlockSize = r.BlockSize;
        modified.KeySize = r.KeySize;
        modified.IV = r.IV;
        modified.Key = r.Key;
        modified.Padding = r.Padding;
        modified.Mode = r.Mode;

        TestEncryptDecrypt(r, modified);
        TestEncryptDecrypt(modified, r);
    }
}

Dim r As New RijndaelManaged()

For Each blksz As Integer In AllKeySizes(r.LegalBlockSizes)
    r.BlockSize = blksz
    r.GenerateIV()

    For Each keysz As Integer In AllKeySizes(r.LegalKeySizes)
        r.KeySize = keysz
        r.GenerateKey()

        Dim modified As ModifiedRijndael = ModifiedRijndael.Create(GetType(ModifiedRijndael).FullName)
        modified.BlockSize = r.BlockSize
        modified.KeySize = r.KeySize
        modified.IV = r.IV
        modified.Key = r.Key
        modified.Padding = r.Padding
        modified.Mode = r.Mode

        TestEncryptDecrypt(r, modified)
        TestEncryptDecrypt(modified, r)
    Next
Next