/*
 * SecureBlackbox 2024 .NET Edition - Sample Project
 *
 * This sample project demonstrates the usage of SecureBlackbox in a 
 * simple, straightforward way. It is not intended to be a complete 
 * application. Error handling and other checks are simplified for clarity.
 *
 * www.nsoftware.com/secureblackbox
 *
 * This code is subject to the terms and conditions specified in the 
 * corresponding product license agreement which outlines the authorized 
 * usage and restrictions.
 * 
 */

using System;
using System.Windows.Forms;
using nsoftware.SecureBlackbox;
using System.IO;

namespace XMLEncryptorDemo
{
    /// <summary>
    /// Summary description for frmMain.
    /// </summary>
    public class MainForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Label lbXMLFile;
        private System.Windows.Forms.TextBox edXMLFile;
        private System.Windows.Forms.Button sbBrowseXMLFile;
        private System.Windows.Forms.OpenFileDialog dlgOpen;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;
        private System.Windows.Forms.Button btnEncrypt;
        private GroupBox gbKeyInfo;
        private TextBox edPassphrase;
        private Label lbPassphrase;
        private TextBox edOutputFile;
        private Button sbBrowseOutputFile;
        private Label label2;

        private SaveFileDialog dlgSave;
        private GroupBox gbGeneralEnc;
        private ComboBox cmbEncryptionMethod;
        private Label lbEncryptionmethod;
        private ComboBox cmbEncryptedDataType;
        private Label lbEncryptedDataType;
        private Label label3;
        private Label lbCertificate;
        private Button btnBrowseCert;
        private TextBox edCertPassword;
        private TextBox edCert;
        private Label lbCertPassword;
        private Label lbExternalFile;
        private Button btnBrowseExternalFile;
        private TextBox edExternalFile;
        private TextBox edMimeType;
        private Label lbMimeType;
        private TextBox edXMLNode;
        private Label label1;
        private GroupBox groupBox1;
        private ComboBox cmbKeyWrap;
        private Label lbKeyWrap;
        private ComboBox cmbKeyTransport;
        private Label lbKeyTransport;
        private GroupBox gbKEK;
        private RadioButton rbKeyWrap;
        private RadioButton rbKeyTransport;
        private CheckBox cbEncryptKey;
        private XMLEncryptor encryptor;

        public MainForm()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
            encryptor = new XMLEncryptor();

            cmbEncryptionMethod.SelectedIndex = 1;
            cmbEncryptedDataType.SelectedIndex = 0;
            cmbKeyTransport.SelectedIndex = 0;
            cmbKeyWrap.SelectedIndex = 0;
            updateSettings();
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (components != null)
                {
                    components.Dispose();
                    encryptor.Dispose();
                }
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
            this.lbXMLFile = new System.Windows.Forms.Label();
            this.edXMLFile = new System.Windows.Forms.TextBox();
            this.sbBrowseXMLFile = new System.Windows.Forms.Button();
            this.btnEncrypt = new System.Windows.Forms.Button();
            this.dlgOpen = new System.Windows.Forms.OpenFileDialog();
            this.gbKeyInfo = new System.Windows.Forms.GroupBox();
            this.lbCertificate = new System.Windows.Forms.Label();
            this.btnBrowseCert = new System.Windows.Forms.Button();
            this.edCertPassword = new System.Windows.Forms.TextBox();
            this.edCert = new System.Windows.Forms.TextBox();
            this.lbCertPassword = new System.Windows.Forms.Label();
            this.edPassphrase = new System.Windows.Forms.TextBox();
            this.lbPassphrase = new System.Windows.Forms.Label();
            this.edOutputFile = new System.Windows.Forms.TextBox();
            this.sbBrowseOutputFile = new System.Windows.Forms.Button();
            this.label2 = new System.Windows.Forms.Label();
            this.dlgSave = new System.Windows.Forms.SaveFileDialog();
            this.gbGeneralEnc = new System.Windows.Forms.GroupBox();
            this.lbExternalFile = new System.Windows.Forms.Label();
            this.btnBrowseExternalFile = new System.Windows.Forms.Button();
            this.edExternalFile = new System.Windows.Forms.TextBox();
            this.edMimeType = new System.Windows.Forms.TextBox();
            this.lbMimeType = new System.Windows.Forms.Label();
            this.edXMLNode = new System.Windows.Forms.TextBox();
            this.label1 = new System.Windows.Forms.Label();
            this.cmbEncryptionMethod = new System.Windows.Forms.ComboBox();
            this.lbEncryptionmethod = new System.Windows.Forms.Label();
            this.cmbEncryptedDataType = new System.Windows.Forms.ComboBox();
            this.lbEncryptedDataType = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.cmbKeyWrap = new System.Windows.Forms.ComboBox();
            this.lbKeyWrap = new System.Windows.Forms.Label();
            this.cmbKeyTransport = new System.Windows.Forms.ComboBox();
            this.lbKeyTransport = new System.Windows.Forms.Label();
            this.gbKEK = new System.Windows.Forms.GroupBox();
            this.rbKeyWrap = new System.Windows.Forms.RadioButton();
            this.rbKeyTransport = new System.Windows.Forms.RadioButton();
            this.cbEncryptKey = new System.Windows.Forms.CheckBox();
            this.gbKeyInfo.SuspendLayout();
            this.gbGeneralEnc.SuspendLayout();
            this.groupBox1.SuspendLayout();
            this.gbKEK.SuspendLayout();
            this.SuspendLayout();
            // 
            // lbXMLFile
            // 
            this.lbXMLFile.Location = new System.Drawing.Point(5, 43);
            this.lbXMLFile.Name = "lbXMLFile";
            this.lbXMLFile.Size = new System.Drawing.Size(60, 13);
            this.lbXMLFile.TabIndex = 0;
            this.lbXMLFile.Text = "Input file:";
            // 
            // edXMLFile
            // 
            this.edXMLFile.Location = new System.Drawing.Point(71, 40);
            this.edXMLFile.Name = "edXMLFile";
            this.edXMLFile.Size = new System.Drawing.Size(373, 20);
            this.edXMLFile.TabIndex = 1;
            // 
            // sbBrowseXMLFile
            // 
            this.sbBrowseXMLFile.Location = new System.Drawing.Point(450, 37);
            this.sbBrowseXMLFile.Name = "sbBrowseXMLFile";
            this.sbBrowseXMLFile.Size = new System.Drawing.Size(75, 25);
            this.sbBrowseXMLFile.TabIndex = 2;
            this.sbBrowseXMLFile.Text = "Browse ...";
            this.sbBrowseXMLFile.Click += new System.EventHandler(this.sbBrowseXMLFile_Click);
            // 
            // btnEncrypt
            // 
            this.btnEncrypt.Location = new System.Drawing.Point(585, 380);
            this.btnEncrypt.Name = "btnEncrypt";
            this.btnEncrypt.Size = new System.Drawing.Size(75, 25);
            this.btnEncrypt.TabIndex = 8;
            this.btnEncrypt.Text = "Encrypt";
            this.btnEncrypt.Click += new System.EventHandler(this.btnEncrypt_Click);
            // 
            // gbKeyInfo
            // 
            this.gbKeyInfo.Controls.Add(this.lbCertificate);
            this.gbKeyInfo.Controls.Add(this.btnBrowseCert);
            this.gbKeyInfo.Controls.Add(this.edCertPassword);
            this.gbKeyInfo.Controls.Add(this.edCert);
            this.gbKeyInfo.Controls.Add(this.lbCertPassword);
            this.gbKeyInfo.Controls.Add(this.edPassphrase);
            this.gbKeyInfo.Controls.Add(this.lbPassphrase);
            this.gbKeyInfo.Location = new System.Drawing.Point(335, 225);
            this.gbKeyInfo.Name = "gbKeyInfo";
            this.gbKeyInfo.Size = new System.Drawing.Size(325, 150);
            this.gbKeyInfo.TabIndex = 15;
            this.gbKeyInfo.TabStop = false;
            this.gbKeyInfo.Text = "Key/certificate properties  ";
            // 
            // lbCertificate
            // 
            this.lbCertificate.AutoSize = true;
            this.lbCertificate.Location = new System.Drawing.Point(7, 75);
            this.lbCertificate.Name = "lbCertificate";
            this.lbCertificate.Size = new System.Drawing.Size(109, 13);
            this.lbCertificate.TabIndex = 65;
            this.lbCertificate.Text = "Encryption certificate:";
            // 
            // btnBrowseCert
            // 
            this.btnBrowseCert.Location = new System.Drawing.Point(244, 89);
            this.btnBrowseCert.Name = "btnBrowseCert";
            this.btnBrowseCert.Size = new System.Drawing.Size(75, 25);
            this.btnBrowseCert.TabIndex = 64;
            this.btnBrowseCert.Text = "Browse ...";
            this.btnBrowseCert.Click += new System.EventHandler(this.btnBrowseCert_Click);
            // 
            // edCertPassword
            // 
            this.edCertPassword.Location = new System.Drawing.Point(118, 123);
            this.edCertPassword.Name = "edCertPassword";
            this.edCertPassword.PasswordChar = '*';
            this.edCertPassword.Size = new System.Drawing.Size(201, 20);
            this.edCertPassword.TabIndex = 63;
            // 
            // edCert
            // 
            this.edCert.Location = new System.Drawing.Point(10, 92);
            this.edCert.Name = "edCert";
            this.edCert.Size = new System.Drawing.Size(228, 20);
            this.edCert.TabIndex = 62;
            // 
            // lbCertPassword
            // 
            this.lbCertPassword.AutoSize = true;
            this.lbCertPassword.Location = new System.Drawing.Point(7, 126);
            this.lbCertPassword.Name = "lbCertPassword";
            this.lbCertPassword.Size = new System.Drawing.Size(105, 13);
            this.lbCertPassword.TabIndex = 61;
            this.lbCertPassword.Text = "Certificate password:";
            // 
            // edPassphrase
            // 
            this.edPassphrase.Location = new System.Drawing.Point(10, 41);
            this.edPassphrase.Name = "edPassphrase";
            this.edPassphrase.Size = new System.Drawing.Size(309, 20);
            this.edPassphrase.TabIndex = 1;
            // 
            // lbPassphrase
            // 
            this.lbPassphrase.AutoSize = true;
            this.lbPassphrase.Location = new System.Drawing.Point(7, 25);
            this.lbPassphrase.Name = "lbPassphrase";
            this.lbPassphrase.Size = new System.Drawing.Size(79, 13);
            this.lbPassphrase.TabIndex = 0;
            this.lbPassphrase.Text = "Key/Password:";
            // 
            // edOutputFile
            // 
            this.edOutputFile.Location = new System.Drawing.Point(71, 70);
            this.edOutputFile.Name = "edOutputFile";
            this.edOutputFile.Size = new System.Drawing.Size(373, 20);
            this.edOutputFile.TabIndex = 19;
            // 
            // sbBrowseOutputFile
            // 
            this.sbBrowseOutputFile.Location = new System.Drawing.Point(450, 67);
            this.sbBrowseOutputFile.Name = "sbBrowseOutputFile";
            this.sbBrowseOutputFile.Size = new System.Drawing.Size(75, 25);
            this.sbBrowseOutputFile.TabIndex = 20;
            this.sbBrowseOutputFile.Text = "Browse ...";
            this.sbBrowseOutputFile.Click += new System.EventHandler(this.sbBrowseOutputFile_Click);
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(5, 73);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(60, 13);
            this.label2.TabIndex = 18;
            this.label2.Text = "Output file:";
            // 
            // gbGeneralEnc
            // 
            this.gbGeneralEnc.Controls.Add(this.lbExternalFile);
            this.gbGeneralEnc.Controls.Add(this.btnBrowseExternalFile);
            this.gbGeneralEnc.Controls.Add(this.edExternalFile);
            this.gbGeneralEnc.Controls.Add(this.edMimeType);
            this.gbGeneralEnc.Controls.Add(this.lbMimeType);
            this.gbGeneralEnc.Controls.Add(this.edXMLNode);
            this.gbGeneralEnc.Controls.Add(this.label1);
            this.gbGeneralEnc.Controls.Add(this.cmbEncryptionMethod);
            this.gbGeneralEnc.Controls.Add(this.lbEncryptionmethod);
            this.gbGeneralEnc.Controls.Add(this.cmbEncryptedDataType);
            this.gbGeneralEnc.Controls.Add(this.lbEncryptedDataType);
            this.gbGeneralEnc.Location = new System.Drawing.Point(5, 100);
            this.gbGeneralEnc.Name = "gbGeneralEnc";
            this.gbGeneralEnc.Size = new System.Drawing.Size(655, 120);
            this.gbGeneralEnc.TabIndex = 22;
            this.gbGeneralEnc.TabStop = false;
            this.gbGeneralEnc.Text = "Encryption properties  ";
            // 
            // lbExternalFile
            // 
            this.lbExternalFile.AutoSize = true;
            this.lbExternalFile.Location = new System.Drawing.Point(49, 93);
            this.lbExternalFile.Name = "lbExternalFile";
            this.lbExternalFile.Size = new System.Drawing.Size(67, 13);
            this.lbExternalFile.TabIndex = 68;
            this.lbExternalFile.Text = "External File:";
            // 
            // btnBrowseExternalFile
            // 
            this.btnBrowseExternalFile.Location = new System.Drawing.Point(500, 87);
            this.btnBrowseExternalFile.Name = "btnBrowseExternalFile";
            this.btnBrowseExternalFile.Size = new System.Drawing.Size(75, 25);
            this.btnBrowseExternalFile.TabIndex = 67;
            this.btnBrowseExternalFile.Text = "Browse ...";
            this.btnBrowseExternalFile.Click += new System.EventHandler(this.btnBrowseExternalFile_Click);
            // 
            // edExternalFile
            // 
            this.edExternalFile.Location = new System.Drawing.Point(120, 90);
            this.edExternalFile.Name = "edExternalFile";
            this.edExternalFile.Size = new System.Drawing.Size(374, 20);
            this.edExternalFile.TabIndex = 66;
            // 
            // edMimeType
            // 
            this.edMimeType.Location = new System.Drawing.Point(415, 60);
            this.edMimeType.Name = "edMimeType";
            this.edMimeType.Size = new System.Drawing.Size(204, 20);
            this.edMimeType.TabIndex = 13;
            // 
            // lbMimeType
            // 
            this.lbMimeType.Location = new System.Drawing.Point(345, 63);
            this.lbMimeType.Name = "lbMimeType";
            this.lbMimeType.Size = new System.Drawing.Size(64, 16);
            this.lbMimeType.TabIndex = 12;
            this.lbMimeType.Text = "Mime Type:";
            // 
            // edXMLNode
            // 
            this.edXMLNode.Location = new System.Drawing.Point(120, 60);
            this.edXMLNode.Name = "edXMLNode";
            this.edXMLNode.Size = new System.Drawing.Size(200, 20);
            this.edXMLNode.TabIndex = 11;
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(52, 63);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(64, 16);
            this.label1.TabIndex = 10;
            this.label1.Text = "XML Node:";
            // 
            // cmbEncryptionMethod
            // 
            this.cmbEncryptionMethod.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cmbEncryptionMethod.Items.AddRange(new object[] {
            "3DES",
            "AES128",
            "AES192",
            "AES256",
            "Camellia128",
            "Camellia192",
            "Camellia256",
            "DES",
            "RC4",
            "SEED"});
            this.cmbEncryptionMethod.Location = new System.Drawing.Point(415, 27);
            this.cmbEncryptionMethod.Name = "cmbEncryptionMethod";
            this.cmbEncryptionMethod.Size = new System.Drawing.Size(214, 21);
            this.cmbEncryptionMethod.TabIndex = 9;
            // 
            // lbEncryptionmethod
            // 
            this.lbEncryptionmethod.AutoSize = true;
            this.lbEncryptionmethod.Location = new System.Drawing.Point(311, 30);
            this.lbEncryptionmethod.Name = "lbEncryptionmethod";
            this.lbEncryptionmethod.Size = new System.Drawing.Size(98, 13);
            this.lbEncryptionmethod.TabIndex = 8;
            this.lbEncryptionmethod.Text = "Encryption method:";
            // 
            // cmbEncryptedDataType
            // 
            this.cmbEncryptedDataType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cmbEncryptedDataType.Items.AddRange(new object[] {
            "Element",
            "Content",
            "External File"});
            this.cmbEncryptedDataType.Location = new System.Drawing.Point(120, 27);
            this.cmbEncryptedDataType.Name = "cmbEncryptedDataType";
            this.cmbEncryptedDataType.Size = new System.Drawing.Size(161, 21);
            this.cmbEncryptedDataType.TabIndex = 4;
            this.cmbEncryptedDataType.SelectedIndexChanged += new System.EventHandler(this.cmbEncryptedDataType_SelectedIndexChanged);
            // 
            // lbEncryptedDataType
            // 
            this.lbEncryptedDataType.AutoSize = true;
            this.lbEncryptedDataType.Location = new System.Drawing.Point(5, 30);
            this.lbEncryptedDataType.Name = "lbEncryptedDataType";
            this.lbEncryptedDataType.Size = new System.Drawing.Size(111, 13);
            this.lbEncryptedDataType.TabIndex = 2;
            this.lbEncryptedDataType.Text = "Encrypted Data Type:";
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.ForeColor = System.Drawing.SystemColors.Highlight;
            this.label3.Location = new System.Drawing.Point(5, 5);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(537, 26);
            this.label3.TabIndex = 23;
            this.label3.Text = resources.GetString("label3.Text");
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.cmbKeyWrap);
            this.groupBox1.Controls.Add(this.lbKeyWrap);
            this.groupBox1.Controls.Add(this.cmbKeyTransport);
            this.groupBox1.Controls.Add(this.lbKeyTransport);
            this.groupBox1.Controls.Add(this.gbKEK);
            this.groupBox1.Controls.Add(this.cbEncryptKey);
            this.groupBox1.Location = new System.Drawing.Point(5, 225);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(325, 170);
            this.groupBox1.TabIndex = 24;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "Key Encryption Key (KEK) properties  ";
            // 
            // cmbKeyWrap
            // 
            this.cmbKeyWrap.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cmbKeyWrap.Items.AddRange(new object[] {
            "3DES",
            "AES128",
            "AES192",
            "AES256",
            "Camellia128",
            "Camellia192",
            "Camellia256",
            "SEED"});
            this.cmbKeyWrap.Location = new System.Drawing.Point(89, 140);
            this.cmbKeyWrap.Name = "cmbKeyWrap";
            this.cmbKeyWrap.Size = new System.Drawing.Size(192, 21);
            this.cmbKeyWrap.TabIndex = 8;
            // 
            // lbKeyWrap
            // 
            this.lbKeyWrap.AutoSize = true;
            this.lbKeyWrap.Location = new System.Drawing.Point(26, 143);
            this.lbKeyWrap.Name = "lbKeyWrap";
            this.lbKeyWrap.Size = new System.Drawing.Size(57, 13);
            this.lbKeyWrap.TabIndex = 7;
            this.lbKeyWrap.Text = "Key Wrap:";
            // 
            // cmbKeyTransport
            // 
            this.cmbKeyTransport.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cmbKeyTransport.Items.AddRange(new object[] {
            "RSA v1.5",
            "RSA-OAEP"});
            this.cmbKeyTransport.Location = new System.Drawing.Point(89, 110);
            this.cmbKeyTransport.Name = "cmbKeyTransport";
            this.cmbKeyTransport.Size = new System.Drawing.Size(192, 21);
            this.cmbKeyTransport.TabIndex = 6;
            // 
            // lbKeyTransport
            // 
            this.lbKeyTransport.AutoSize = true;
            this.lbKeyTransport.Location = new System.Drawing.Point(7, 113);
            this.lbKeyTransport.Name = "lbKeyTransport";
            this.lbKeyTransport.Size = new System.Drawing.Size(76, 13);
            this.lbKeyTransport.TabIndex = 5;
            this.lbKeyTransport.Text = "Key Transport:";
            // 
            // gbKEK
            // 
            this.gbKEK.Controls.Add(this.rbKeyWrap);
            this.gbKEK.Controls.Add(this.rbKeyTransport);
            this.gbKEK.Location = new System.Drawing.Point(10, 50);
            this.gbKEK.Name = "gbKEK";
            this.gbKEK.Size = new System.Drawing.Size(271, 49);
            this.gbKEK.TabIndex = 1;
            this.gbKEK.TabStop = false;
            this.gbKEK.Text = "Key Encryption Key type:";
            // 
            // rbKeyWrap
            // 
            this.rbKeyWrap.AutoSize = true;
            this.rbKeyWrap.Checked = true;
            this.rbKeyWrap.Location = new System.Drawing.Point(153, 22);
            this.rbKeyWrap.Name = "rbKeyWrap";
            this.rbKeyWrap.Size = new System.Drawing.Size(72, 17);
            this.rbKeyWrap.TabIndex = 1;
            this.rbKeyWrap.TabStop = true;
            this.rbKeyWrap.Text = "Key Wrap";
            this.rbKeyWrap.UseVisualStyleBackColor = true;
            this.rbKeyWrap.CheckedChanged += new System.EventHandler(this.rbKeyWrap_CheckedChanged);
            // 
            // rbKeyTransport
            // 
            this.rbKeyTransport.AutoSize = true;
            this.rbKeyTransport.Location = new System.Drawing.Point(13, 22);
            this.rbKeyTransport.Name = "rbKeyTransport";
            this.rbKeyTransport.Size = new System.Drawing.Size(91, 17);
            this.rbKeyTransport.TabIndex = 0;
            this.rbKeyTransport.Text = "Key Transport";
            this.rbKeyTransport.UseVisualStyleBackColor = true;
            this.rbKeyTransport.CheckedChanged += new System.EventHandler(this.rbKeyTransport_CheckedChanged);
            // 
            // cbEncryptKey
            // 
            this.cbEncryptKey.AutoSize = true;
            this.cbEncryptKey.Location = new System.Drawing.Point(10, 25);
            this.cbEncryptKey.Name = "cbEncryptKey";
            this.cbEncryptKey.Size = new System.Drawing.Size(83, 17);
            this.cbEncryptKey.TabIndex = 0;
            this.cbEncryptKey.Text = "Encrypt Key";
            this.cbEncryptKey.UseVisualStyleBackColor = true;
            this.cbEncryptKey.CheckedChanged += new System.EventHandler(this.cbEncryptKey_CheckedChanged);
            // 
            // MainForm
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(664, 411);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.gbGeneralEnc);
            this.Controls.Add(this.edOutputFile);
            this.Controls.Add(this.sbBrowseOutputFile);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.gbKeyInfo);
            this.Controls.Add(this.edXMLFile);
            this.Controls.Add(this.btnEncrypt);
            this.Controls.Add(this.sbBrowseXMLFile);
            this.Controls.Add(this.lbXMLFile);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.Name = "MainForm";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "XML Encryptor demo";
            this.gbKeyInfo.ResumeLayout(false);
            this.gbKeyInfo.PerformLayout();
            this.gbGeneralEnc.ResumeLayout(false);
            this.gbGeneralEnc.PerformLayout();
            this.groupBox1.ResumeLayout(false);
            this.groupBox1.PerformLayout();
            this.gbKEK.ResumeLayout(false);
            this.gbKEK.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new MainForm());
        }

        private void updateSettings()
        {
            gbKEK.Enabled = cbEncryptKey.Checked;
            cmbKeyTransport.Enabled = cbEncryptKey.Checked;
            lbKeyTransport.Enabled = cmbKeyTransport.Enabled;
            cmbKeyWrap.Enabled = cbEncryptKey.Checked;
            lbKeyWrap.Enabled = cmbKeyWrap.Enabled;
            cmbKeyTransport.Enabled = cbEncryptKey.Checked && rbKeyTransport.Checked;
            lbKeyTransport.Enabled = cmbKeyTransport.Enabled;
            cmbKeyWrap.Enabled = cbEncryptKey.Checked && rbKeyWrap.Checked;
            lbKeyWrap.Enabled = cmbKeyWrap.Enabled;
            edPassphrase.Enabled = cmbKeyWrap.Enabled || !cbEncryptKey.Checked;
            lbPassphrase.Enabled = edPassphrase.Enabled;
            edCert.Enabled = cmbKeyTransport.Enabled;
            lbCertificate.Enabled = edCert.Enabled;
            edCertPassword.Enabled = edCert.Enabled;
            lbCertPassword.Enabled = edCert.Enabled;
            btnBrowseCert.Enabled = edCert.Enabled;
            edMimeType.Enabled = (cmbEncryptedDataType.SelectedIndex == 2);
            lbMimeType.Enabled = edMimeType.Enabled;
            edExternalFile.Enabled = (cmbEncryptedDataType.SelectedIndex == 2);
            lbExternalFile.Enabled = edExternalFile.Enabled;
            btnBrowseExternalFile.Enabled = edExternalFile.Enabled;
        }

        private byte[] getKey(string algorithm)
        {
            int len = 0;

            if (algorithm.Equals("AES128", StringComparison.OrdinalIgnoreCase))
                len = 16;
            else if (algorithm.Equals("AES192", StringComparison.OrdinalIgnoreCase))
                len = 24;
            else if (algorithm.Equals("AES256", StringComparison.OrdinalIgnoreCase))
                len = 32;
            else if (algorithm.Equals("Camellia128", StringComparison.OrdinalIgnoreCase))
                len = 16;
            else if (algorithm.Equals("Camellia192", StringComparison.OrdinalIgnoreCase))
                len = 24;
            else if (algorithm.Equals("Camellia256", StringComparison.OrdinalIgnoreCase))
                len = 32;
            else if (algorithm.Equals("DES", StringComparison.OrdinalIgnoreCase))
                len = 8;
            else if (algorithm.Equals("3DES", StringComparison.OrdinalIgnoreCase))
                len = 24;
            else if (algorithm.Equals("RC4", StringComparison.OrdinalIgnoreCase))
                len = 16;
            else if (algorithm.Equals("SEED", StringComparison.OrdinalIgnoreCase))
                len = 16;

            // simple key derivation function from a Passphrase
            // TODO: replace with SHA256 hash or KDF
            string s = edPassphrase.Text;
            while (s.Length < len)
                s = s + "/" + edPassphrase.Text;

            byte[] res = new byte[len];
            for (int i = 0; i < len; i++)
                res[i] = (byte)s[i];

            return res;
        }

        private void sbBrowseXMLFile_Click(object sender, System.EventArgs e)
        {
            dlgOpen.Filter = "XML file (*.xml)|*.XML";
            if (dlgOpen.ShowDialog() == DialogResult.OK)
                edXMLFile.Text = dlgOpen.FileName;
        }

        public Certificate LoadCertificate(string file, string password)
        {
            Certificate cert = null;

            if (file.Length > 0)
            {
                try
                {
                    CertificateManager certmanager = new CertificateManager();

                    certmanager.ImportFromFile(file, password);

                    cert = certmanager.Certificate;
                }
                catch (Exception e)
                {
                    MessageBox.Show("Cannot load certificate!");
                }
            }

            return cert;
        }

        private void sbBrowseOutputFile_Click(object sender, EventArgs e)
        {
            dlgOpen.Filter = "";
            if (dlgSave.ShowDialog() == DialogResult.OK)
                edOutputFile.Text = dlgSave.FileName;
        }

        private void btnBrowseCert_Click(object sender, EventArgs e)
        {
            if (dlgOpen.ShowDialog() == DialogResult.OK)
                edCert.Text = dlgOpen.FileName;
        }

        private void cmbEncryptedDataType_SelectedIndexChanged(object sender, EventArgs e)
        {
            updateSettings();
        }

        private void cbEncryptKey_CheckedChanged(object sender, EventArgs e)
        {
            updateSettings();
        }

        private void rbKeyTransport_CheckedChanged(object sender, EventArgs e)
        {
            updateSettings();
        }

        private void rbKeyWrap_CheckedChanged(object sender, EventArgs e)
        {
            updateSettings();
        }

        private void btnEncrypt_Click(object sender, EventArgs e)
        {
            encryptor.InputFile = edXMLFile.Text;
            encryptor.OutputFile = edOutputFile.Text;

            encryptor.EncryptKey = cbEncryptKey.Checked;
            switch (cmbEncryptedDataType.SelectedIndex)
            {
                case 1: encryptor.EncryptedDataType = XMLEncryptorEncryptedDataTypes.cxedtContent; break;
                case 2:
                    encryptor.EncryptedDataType = XMLEncryptorEncryptedDataTypes.cxedtExternal;
                    if (edMimeType.Text.Length > 0)
                        encryptor.Config("MimeType=" + edMimeType.Text);

                    encryptor.ExternalData = File.ReadAllBytes(edExternalFile.Text);

                    break;
                default: encryptor.EncryptedDataType = XMLEncryptorEncryptedDataTypes.cxedtElement; break;
            }

            encryptor.EncryptionMethod = cmbEncryptionMethod.Text;
            encryptor.UseGCM = false;

            encryptor.XMLNode = edXMLNode.Text;

            if (encryptor.EncryptKey)
            {
                if (rbKeyTransport.Checked)
                {
                    encryptor.KeyEncryptionType = XMLEncryptorKeyEncryptionTypes.cxetKeyTransport;

                    if (cmbKeyTransport.SelectedIndex == 0)
                        encryptor.KeyTransportMethod = XMLEncryptorKeyTransportMethods.cxktRSA15;
                    else
                        encryptor.KeyTransportMethod = XMLEncryptorKeyTransportMethods.cxktRSAOAEP;

                    encryptor.KeyEncryptionCertificate = LoadCertificate(edCert.Text, edCertPassword.Text);
                }
                else
                {
                    encryptor.KeyEncryptionType = XMLEncryptorKeyEncryptionTypes.cxetKeyWrap;

                    encryptor.KeyWrapMethod = cmbKeyWrap.Text;
                    encryptor.KeyEncryptionKey = getKey(encryptor.KeyWrapMethod);
                }
            }
            else
            {
                encryptor.EncryptionKey = getKey(encryptor.EncryptionMethod);
            }

            // Enable automatic formatting 
            encryptor.Config("XMLFormatting=auto");

            try
            {
                encryptor.Encrypt();

                MessageBox.Show("XML file successfully encrypted");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void btnBrowseExternalFile_Click(object sender, EventArgs e)
        {
            dlgOpen.Filter = "";
            if (dlgSave.ShowDialog() == DialogResult.OK)
                edExternalFile.Text = dlgSave.FileName;
        }
    }
}