using System;

using System.Security.Cryptography;

using System.Text;

public class Program

{

    private static byte[] initVector = Encoding.ASCII.GetBytes("jsKidmshatyb4jdu");

    public static void Main()

    {

        //Encrypt

            RijndaelManaged AesEncryption = new RijndaelManaged();

            //AesEncryption.KeySize = 256;

            //AesEncryption.BlockSize = 16;

            //AesEncryption.Mode = CipherMode.CBC;

            //AesEncryption.Padding = PaddingMode.None;

            var key = Convert.FromBase64String("kFC2FGFmmXQ5Xq/Ga1gBpJk9KiI+VFhqtSMaSjJ0Bh8=");

            //AesEncryption.GenerateIV();

            ICryptoTransform crypto = AesEncryption.CreateEncryptor(key, initVector);

            string text = "123";

            var plainText = ASCIIEncoding.UTF8.GetBytes(text);

            byte[] encrypted = crypto.TransformFinalBlock(plainText, 0, plainText.Length);

​

            var dataStr = Convert.ToBase64String(encrypted);

            var ivStr = Convert.ToBase64String(AesEncryption.IV);

            Console.WriteLine(dataStr);

    }

}