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private void button1_Click(object sender, EventArgs e)
        {
            string key = "12345678";
            string iv = "12345678";
 
            byte[] password = ASCIIEncoding.ASCII.GetBytes(textBox1.Text);
 
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
 
            des.Key = ASCIIEncoding.ASCII.GetBytes(key);
            des.IV = ASCIIEncoding.ASCII.GetBytes(iv);
 
            ICryptoTransform encrypt = des.CreateEncryptor();
 
            MemoryStream str = new MemoryStream(password);
 
            CryptoStream crp = new CryptoStream(str, encrypt, CryptoStreamMode.Write);
        } | 
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