asp.net中URL引數加密解密過程
加密程式碼
public static string Encode(string str, string key) { DESCryptoServiceProvider provider = new DESCryptoServiceProvider(); provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8)); provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8)); byte[] bytes = Encoding.UTF8.GetBytes(str); MemoryStream stream = new MemoryStream(); CryptoStream stream2 = new CryptoStream(stream, provider.CreateEncryptor(), CryptoStreamMode.Write); stream2.Write(bytes, 0, bytes.Length); stream2.FlushFinalBlock(); StringBuilder builder = new StringBuilder(); foreach (byte num in stream.ToArray()) { builder.AppendFormat("{0:X2}", num); } stream.Close(); return builder.ToString(); }
解密程式碼
public static string Decode(string str, string key) { DESCryptoServiceProvider provider = new DESCryptoServiceProvider(); provider.Key = Encoding.ASCII.GetBytes(key.Substring(0, 8)); provider.IV = Encoding.ASCII.GetBytes(key.Substring(0, 8)); byte[] buffer = new byte[str.Length / 2]; for (int i = 0; i < (str.Length / 2); i++) { int num2 = Convert.ToInt32(str.Substring(i * 2, 2), 0x10); buffer[i] = (byte)num2; } MemoryStream stream = new MemoryStream(); CryptoStream stream2 = new CryptoStream(stream, provider.CreateDecryptor(), CryptoStreamMode.Write); stream2.Write(buffer, 0, buffer.Length); stream2.FlushFinalBlock(); stream.Close(); return Encoding.GetEncoding("GB2312").GetString(stream.ToArray()); }
前臺
<asp:TextBox ID="txtbox" runat="server"></asp:TextBox> <asp:Button ID="btnok" runat="server" onclick="btnok_Click" Text="加密" /> <asp:Button ID="btncanel" runat="server" Text="解密" onclick="btncanel_Click" />
後臺程式碼
protected void btnok_Click(object sender, EventArgs e) { txtbox.Text = Helper.Encode(txtbox.Text.Trim(), "Rainight").Trim( } protected void btncanel_Click(object sender, EventArgs e) { txtbox.Text = Helper.Decode(txtbox.Text.Trim(), "Rainight").Trim(); Response.Write(Helper.Decode(txtbox.Text.Trim(), "Rainight")); }