387 lines
15 KiB
C#
387 lines
15 KiB
C#
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using System;
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using System.Windows.Forms;
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using nsoftware.SecureBlackbox;
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/// <summary>
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/// Summary description for SignForm.
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/// </summary>
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public class DecryptPropsForm : System.Windows.Forms.Form
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{
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private System.Windows.Forms.Button btnCancel;
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private System.Windows.Forms.Button btnOK;
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private System.Windows.Forms.OpenFileDialog dlgOpen;
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/// <summary>
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/// Required designer variable.
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/// </summary>
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private System.ComponentModel.Container components = null;
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private GroupBox gbGeneralEnc;
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private GroupBox gbKeyInfo;
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private Label lbCertificate;
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private Button btnBrowseCert;
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private TextBox edCertPassword;
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private TextBox edCert;
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private Label lbCertPassword;
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private TextBox edPassphrase;
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private Label lbPassphrase;
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private Label label1;
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private TextBox textInfo;
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private XMLDecryptor decryptor = null;
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public DecryptPropsForm(XMLDecryptor _decryptor)
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{
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//
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// Required for Windows Form Designer support
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//
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InitializeComponent();
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//
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// TODO: Add any constructor code after InitializeComponent call
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//
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decryptor = _decryptor;
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String t = "";
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if (_decryptor.UseGCM)
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t = "-GCM";
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String s = "Encryption method: " + _decryptor.EncryptionMethod + t + Environment.NewLine;
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if (_decryptor.EncryptedDataType == XMLDecryptorEncryptedDataTypes.cxedtElement)
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t = "Element";
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else if (_decryptor.EncryptedDataType == XMLDecryptorEncryptedDataTypes.cxedtContent)
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t = "Content";
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else
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t = "External";
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s = s + "Encrypted data type: " + t + Environment.NewLine;
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bool certRequired = false;
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if (_decryptor.EncryptKey)
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{
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s = s + "EncryptKey: true" + Environment.NewLine;
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if (_decryptor.KeyEncryptionType == XMLDecryptorKeyEncryptionTypes.cxetKeyTransport)
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{
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s = s + "Key encryption type: transport" + Environment.NewLine;
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if (_decryptor.KeyTransportMethod == XMLDecryptorKeyTransportMethods.cxktRSA15)
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t = "RSA v1.5";
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else
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t = "RSA-OAEP";
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s = s + "Key transport method: " + t + Environment.NewLine;
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certRequired = true;
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}
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else
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{
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s = s + "Key encryption type: wrap" + Environment.NewLine;
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s = s + "Key wrap method: " + _decryptor.KeyWrapMethod + Environment.NewLine;
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}
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}
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else
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s = s + "EncryptKey: false" + Environment.NewLine;
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t = _decryptor.Config("KeyName");
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if (t.Length > 0)
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s = s + "Key name: " + t + Environment.NewLine;
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t = _decryptor.Config("MimeType");
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if (t.Length > 0)
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s = s + "Mime type: " + t + Environment.NewLine;
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textInfo.Text = s;
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edPassphrase.Enabled = !certRequired;
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lbPassphrase.Enabled = !certRequired;
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edCert.Enabled = certRequired;
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lbCertificate.Enabled = certRequired;
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edCertPassword.Enabled = certRequired;
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lbCertPassword.Enabled = certRequired;
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btnBrowseCert.Enabled = certRequired;
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}
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/// <summary>
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/// Clean up any resources being used.
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/// </summary>
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protected override void Dispose(bool disposing)
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{
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if (disposing)
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{
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if (components != null)
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{
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components.Dispose();
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}
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}
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base.Dispose(disposing);
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}
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#region Windows Form Designer generated code
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/// <summary>
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/// Required method for Designer support - do not modify
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/// the contents of this method with the code editor.
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/// </summary>
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private void InitializeComponent()
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{
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this.btnCancel = new System.Windows.Forms.Button();
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this.btnOK = new System.Windows.Forms.Button();
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this.dlgOpen = new System.Windows.Forms.OpenFileDialog();
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this.gbGeneralEnc = new System.Windows.Forms.GroupBox();
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this.textInfo = new System.Windows.Forms.TextBox();
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this.gbKeyInfo = new System.Windows.Forms.GroupBox();
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this.lbCertificate = new System.Windows.Forms.Label();
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this.btnBrowseCert = new System.Windows.Forms.Button();
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this.edCertPassword = new System.Windows.Forms.TextBox();
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this.edCert = new System.Windows.Forms.TextBox();
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this.lbCertPassword = new System.Windows.Forms.Label();
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this.edPassphrase = new System.Windows.Forms.TextBox();
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this.lbPassphrase = new System.Windows.Forms.Label();
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this.label1 = new System.Windows.Forms.Label();
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this.gbGeneralEnc.SuspendLayout();
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this.gbKeyInfo.SuspendLayout();
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this.SuspendLayout();
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//
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// btnCancel
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//
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this.btnCancel.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
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this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
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this.btnCancel.Location = new System.Drawing.Point(272, 329);
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this.btnCancel.Name = "btnCancel";
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this.btnCancel.Size = new System.Drawing.Size(75, 25);
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this.btnCancel.TabIndex = 7;
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this.btnCancel.Text = "Cancel";
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//
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// btnOK
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//
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this.btnOK.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
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this.btnOK.Location = new System.Drawing.Point(185, 329);
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this.btnOK.Name = "btnOK";
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this.btnOK.Size = new System.Drawing.Size(75, 25);
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this.btnOK.TabIndex = 6;
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this.btnOK.Text = "OK";
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this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
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//
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// gbGeneralEnc
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//
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this.gbGeneralEnc.Controls.Add(this.textInfo);
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this.gbGeneralEnc.Controls.Add(this.gbKeyInfo);
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this.gbGeneralEnc.Location = new System.Drawing.Point(7, 55);
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this.gbGeneralEnc.Name = "gbGeneralEnc";
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this.gbGeneralEnc.Size = new System.Drawing.Size(340, 265);
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this.gbGeneralEnc.TabIndex = 18;
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this.gbGeneralEnc.TabStop = false;
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this.gbGeneralEnc.Text = "General";
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//
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// textInfo
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//
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this.textInfo.Location = new System.Drawing.Point(8, 16);
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this.textInfo.Multiline = true;
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this.textInfo.Name = "textInfo";
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this.textInfo.ScrollBars = System.Windows.Forms.ScrollBars.Both;
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this.textInfo.Size = new System.Drawing.Size(325, 83);
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this.textInfo.TabIndex = 19;
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//
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// gbKeyInfo
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//
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this.gbKeyInfo.Controls.Add(this.lbCertificate);
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this.gbKeyInfo.Controls.Add(this.btnBrowseCert);
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this.gbKeyInfo.Controls.Add(this.edCertPassword);
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this.gbKeyInfo.Controls.Add(this.edCert);
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this.gbKeyInfo.Controls.Add(this.lbCertPassword);
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this.gbKeyInfo.Controls.Add(this.edPassphrase);
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this.gbKeyInfo.Controls.Add(this.lbPassphrase);
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this.gbKeyInfo.Location = new System.Drawing.Point(8, 105);
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this.gbKeyInfo.Name = "gbKeyInfo";
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this.gbKeyInfo.Size = new System.Drawing.Size(325, 150);
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this.gbKeyInfo.TabIndex = 16;
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this.gbKeyInfo.TabStop = false;
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this.gbKeyInfo.Text = "Key/certificate properties ";
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//
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// lbCertificate
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//
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this.lbCertificate.AutoSize = true;
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this.lbCertificate.Location = new System.Drawing.Point(7, 75);
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this.lbCertificate.Name = "lbCertificate";
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this.lbCertificate.Size = new System.Drawing.Size(109, 13);
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this.lbCertificate.TabIndex = 65;
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this.lbCertificate.Text = "Encryption certificate:";
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//
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// btnBrowseCert
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//
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this.btnBrowseCert.Location = new System.Drawing.Point(244, 89);
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this.btnBrowseCert.Name = "btnBrowseCert";
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this.btnBrowseCert.Size = new System.Drawing.Size(75, 25);
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this.btnBrowseCert.TabIndex = 64;
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this.btnBrowseCert.Text = "Browse ...";
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this.btnBrowseCert.Click += new System.EventHandler(this.btnBrowseCert_Click);
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//
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// edCertPassword
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//
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this.edCertPassword.Location = new System.Drawing.Point(118, 123);
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this.edCertPassword.Name = "edCertPassword";
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this.edCertPassword.PasswordChar = '*';
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this.edCertPassword.Size = new System.Drawing.Size(201, 20);
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this.edCertPassword.TabIndex = 63;
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//
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// edCert
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//
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this.edCert.Location = new System.Drawing.Point(10, 92);
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this.edCert.Name = "edCert";
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this.edCert.Size = new System.Drawing.Size(228, 20);
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this.edCert.TabIndex = 62;
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//
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// lbCertPassword
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//
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this.lbCertPassword.AutoSize = true;
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this.lbCertPassword.Location = new System.Drawing.Point(7, 126);
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this.lbCertPassword.Name = "lbCertPassword";
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this.lbCertPassword.Size = new System.Drawing.Size(105, 13);
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this.lbCertPassword.TabIndex = 61;
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this.lbCertPassword.Text = "Certificate password:";
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//
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// edPassphrase
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//
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this.edPassphrase.Location = new System.Drawing.Point(10, 41);
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this.edPassphrase.Name = "edPassphrase";
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this.edPassphrase.Size = new System.Drawing.Size(309, 20);
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this.edPassphrase.TabIndex = 1;
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//
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// lbPassphrase
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//
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this.lbPassphrase.AutoSize = true;
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this.lbPassphrase.Location = new System.Drawing.Point(7, 25);
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this.lbPassphrase.Name = "lbPassphrase";
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this.lbPassphrase.Size = new System.Drawing.Size(79, 13);
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this.lbPassphrase.TabIndex = 0;
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this.lbPassphrase.Text = "Key/Password:";
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//
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// label1
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//
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this.label1.AutoSize = true;
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this.label1.ForeColor = System.Drawing.SystemColors.Highlight;
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this.label1.Location = new System.Drawing.Point(4, 9);
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this.label1.Name = "label1";
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this.label1.Size = new System.Drawing.Size(319, 39);
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this.label1.TabIndex = 22;
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this.label1.Text = "The XML document is encrypted. Depending on the document\'s \r\nencryption type you " +
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"would need to provide a decryption password \r\nor decryption certificate.";
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//
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// DecryptPropsForm
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//
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this.AcceptButton = this.btnOK;
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this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
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this.CancelButton = this.btnCancel;
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this.ClientSize = new System.Drawing.Size(354, 361);
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this.Controls.Add(this.label1);
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this.Controls.Add(this.gbGeneralEnc);
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this.Controls.Add(this.btnCancel);
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this.Controls.Add(this.btnOK);
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this.Cursor = System.Windows.Forms.Cursors.Default;
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this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
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this.MaximizeBox = false;
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this.Name = "DecryptPropsForm";
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this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
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this.Text = "Encryption properties";
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this.gbGeneralEnc.ResumeLayout(false);
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this.gbGeneralEnc.PerformLayout();
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this.gbKeyInfo.ResumeLayout(false);
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this.gbKeyInfo.PerformLayout();
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this.ResumeLayout(false);
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this.PerformLayout();
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}
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#endregion
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public Certificate LoadCertificate(string file, string password)
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{
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Certificate cert = null;
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if (file.Length > 0)
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{
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try
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{
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CertificateManager certmanager = new CertificateManager();
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certmanager.ImportFromFile(file, password);
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cert = certmanager.Certificate;
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}
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catch (Exception e)
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{
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MessageBox.Show("Cannot load certificate!");
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}
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}
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return cert;
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}
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private byte[] getKey(string algorithm)
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{
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int len = 0;
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if (algorithm.Equals("AES128", StringComparison.OrdinalIgnoreCase))
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len = 16;
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else if (algorithm.Equals("AES192", StringComparison.OrdinalIgnoreCase))
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len = 24;
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else if (algorithm.Equals("AES256", StringComparison.OrdinalIgnoreCase))
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len = 32;
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else if (algorithm.Equals("Camellia128", StringComparison.OrdinalIgnoreCase))
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len = 16;
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else if (algorithm.Equals("Camellia192", StringComparison.OrdinalIgnoreCase))
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len = 24;
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else if (algorithm.Equals("Camellia256", StringComparison.OrdinalIgnoreCase))
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len = 32;
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else if (algorithm.Equals("DES", StringComparison.OrdinalIgnoreCase))
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len = 8;
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else if (algorithm.Equals("3DES", StringComparison.OrdinalIgnoreCase))
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len = 24;
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else if (algorithm.Equals("RC4", StringComparison.OrdinalIgnoreCase))
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len = 16;
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else if (algorithm.Equals("SEED", StringComparison.OrdinalIgnoreCase))
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len = 16;
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// simple key derivation function from a Passphrase
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// TODO: replace with SHA256 hash or KDF
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string s = edPassphrase.Text;
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while (s.Length < len)
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s = s + "/" + edPassphrase.Text;
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byte[] res = new byte[len];
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for (int i = 0; i < len; i++)
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res[i] = (byte)s[i];
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return res;
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}
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private void btnBrowseCert_Click(object sender, EventArgs e)
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{
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dlgOpen.Title = "Select certificate file";
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dlgOpen.Filter = "PEM-encoded certificate (*.pem)|*.PEM|DER-encoded certificate (*.cer)|*.CER|PFX-encoded certificate (*.pfx)|*.PFX";
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if (dlgOpen.ShowDialog() == DialogResult.OK)
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edCert.Text = dlgOpen.FileName;
|
||
|
|
}
|
||
|
|
|
||
|
|
private void btnOK_Click(object sender, EventArgs e)
|
||
|
|
{
|
||
|
|
if (decryptor.EncryptKey)
|
||
|
|
{
|
||
|
|
if (decryptor.KeyEncryptionType == XMLDecryptorKeyEncryptionTypes.cxetKeyTransport)
|
||
|
|
{
|
||
|
|
try
|
||
|
|
{
|
||
|
|
decryptor.KeyDecryptionCertificate = LoadCertificate(edCert.Text, edCertPassword.Text);
|
||
|
|
}
|
||
|
|
catch (Exception ex)
|
||
|
|
{
|
||
|
|
MessageBox.Show(ex.Message);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
decryptor.KeyDecryptionKey = getKey(decryptor.KeyWrapMethod);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
decryptor.DecryptionKey = getKey(decryptor.EncryptionMethod);
|
||
|
|
}
|
||
|
|
|
||
|
|
this.DialogResult = DialogResult.OK;
|
||
|
|
}
|
||
|
|
}
|