using System;
using System.IO;
using System.Security.Cryptography;
using System.Text;
 
public class Test
{
	public static void Main()
	{
        byte[] key = new byte[] 
        { 
            0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
            0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
            0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
            0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
        };
 
        byte[] iv = new byte[] 
        { 
            0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
            0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F,
        };
 
        byte[] clearData = Encoding.UTF8.GetBytes("Hello world! This is a wonderful day! àèéìòù");
 
        using (Rijndael alg = Rijndael.Create())
        {
            alg.Key = key;
            alg.IV = iv;
 
            using (var ms = new MemoryStream())
            {
                CryptoStream cs = new CryptoStream(ms, alg.CreateEncryptor(), CryptoStreamMode.Write);
                cs.Write(clearData, 0, clearData.Length);
                cs.Close();
                byte[] encryptedData = ms.ToArray();
                Console.WriteLine(BitConverter.ToString(encryptedData).Replace("-", "").ToLowerInvariant());
            }
        }
	}
}

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