DESCryptoServiceProvider在URL加密传输中的应用

   /// <summary>
    /// ±àÂë
    /// </summary>
    /// <param name="str"></param>
    /// <returns></returns>
    public string baseEncode(string str,string stt)
    {
        DESCryptoServiceProvider des = new DESCryptoServiceProvider();
        des.Key = ASCIIEncoding.ASCII.GetBytes(stt);
        des.IV = ASCIIEncoding.ASCII.GetBytes(stt);
        byte[] array = Encoding.Default.GetBytes(str);
        MemoryStream ms = new MemoryStream();
        CryptoStream cs = new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write);
        cs.Write(array,0,array.Length);
        cs.FlushFinalBlock();
        StringBuilder stb = new StringBuilder();
        foreach (byte b in ms.ToArray())
        {
            stb.AppendFormat("{0:X2}",b);
        }
        return stb.ToString();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string key=baseEncode(TextBox1.Text,"abcdefgh");
        Response.Redirect("Default5.aspx?txt=" + key);
    }


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