private void button1_Click(object sender, EventArgs e)
{
TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();
tdsp.Key =Encoding.ASCII.GetBytes("songkexinwoaini1");
tdsp.IV = Encoding.ASCII.GetBytes("20041120");
//tdsp.GenerateKey();
//tdsp.GenerateIV();
textBox1.Text = Convert.ToBase64String(tdsp.Key);
textBox2.Text = Convert.ToBase64String(tdsp.IV);
MemoryStream ms = new MemoryStream();
CryptoStream cs = new CryptoStream(ms, tdsp.CreateEncryptor(), CryptoStreamMode.Write);
cs.Write(Encoding.ASCII.GetBytes(richTextBox1.Text), 0, Encoding.ASCII.GetBytes(richTextBox1.Text).Length);
//StreamWriter sw = new StreamWriter(cs);
//sw.Write(richTextBox1.Text);
//sw.Flush();
cs.FlushFinalBlock();
ms.Flush();
//cs.Close();
// ms.Flush();
richTextBox2.Text = Convert.ToBase64String(ms.GetBuffer(),0,Convert.ToInt32(ms.Length));
}
private void button2_Click(object sender, EventArgs e)
{
//TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();
MemoryStream ms = new MemoryStream(Convert.FromBase64String(richTextBox2.Text));
TripleDES tes=TripleDES.Create();
// MemoryStream ms = new MemoryStream(b);
CryptoStream cs = new CryptoStream(ms, tes.CreateDecryptor(Convert.FromBase64String(textBox1.Text), Convert.FromBase64String(textBox2.Text)), CryptoStreamMode.Read);
byte[] n = new byte[ms.ToArray().Length];
// CryptoStream cs = new CryptoStream(ms, tdsp.CreateDecryptor(tdsp.Key,tdsp.IV ), CryptoStreamMode.Read);
// StreamReader sr = new StreamReader(cs);
//richTextBox3.Text =sr.ReadToEnd();
cs.Read(n, 0, n.Length);
richTextBox3.Text = Encoding.ASCII.GetString(n);
//cs.Close();
}