Feature: Added Digital Signatures tab to the properties window

src/Files.App/Data/Enums/PropertiesNavigationViewItemType.cs

@@ -47,5 +47,10 @@ public enum PropertiesNavigationViewItemType
 		/// Shortcut page type
 		/// </summary>
 		Shortcut,
+
+		/// <summary>
+		/// Signatures page type
+		/// </summary>
+		Signatures,
 	}
 }

src/Files.App/Data/Factories/PropertiesNavigationViewItemFactory.cs

@@ -3,12 +3,25 @@
 
 using Files.Shared.Helpers;
 using Microsoft.UI.Xaml;
+using System.Collections.Frozen;
 using Windows.Storage;
 
 namespace Files.App.Data.Factories
 {
 	public static class PropertiesNavigationViewItemFactory
 	{
+		private static readonly FrozenSet<string> _signableTypes = new HashSet<string>()
+		{
+			".aab", ".apk", ".application", ".appx", ".appxbundle", ".arx", ".cab", ".cat", ".cbx",
+			".cpl", ".crx", ".dbx", ".deploy", ".dll", ".doc", ".docm", ".dot", ".dotm", ".drx",
+			".ear", ".efi", ".exe", ".jar", ".js", ".manifest", ".mpp", ".mpt", ".msi", ".msix",
+			".msixbundle", ".msm", ".msp", ".nupkg", ".ocx", ".pot", ".potm", ".ppa", ".ppam", ".pps",
+			".ppsm", ".ppt", ".pptm", ".ps1", ".psm1", ".psi", ".pub", ".sar", ".stl", ".sys", ".vbs",
+			".vdw", ".vdx", ".vsd", ".vsdm", ".vss", ".vssm", ".vst", ".vstm", ".vsto", ".vsix", ".vsx", ".vtx",
+			".vxd", ".war", ".wiz", ".wsf", ".xap", ".xla", ".xlam", ".xls", ".xlsb", ".xlsm", ".xlt",
+			".xltm", ".xlsm", ".xsn"
+		}.ToFrozenSet();
+
 		public static ObservableCollection<NavigationViewItemButtonStyleItem> Initialize(object item)
 		{
 			ObservableCollection<NavigationViewItemButtonStyleItem> PropertiesNavigationViewItems = [];
@@ -61,8 +74,15 @@ public static ObservableCollection<NavigationViewItemButtonStyleItem> Initialize
 				ItemType = PropertiesNavigationViewItemType.Compatibility,
 				ThemedIconStyle = (Style)Application.Current.Resources["App.ThemedIcons.Properties.Compatability"],
 			};
+			var signaturesItem = new NavigationViewItemButtonStyleItem()
+			{
+				Name = Strings.Signatures.GetLocalizedResource(),
+				ItemType = PropertiesNavigationViewItemType.Signatures,
+				ThemedIconStyle = (Style)Application.Current.Resources["App.ThemedIcons.Properties.Signatures"],
+			};
 
 			PropertiesNavigationViewItems.Add(generalItem);
+			PropertiesNavigationViewItems.Add(signaturesItem);
 			PropertiesNavigationViewItems.Add(securityItem);
 			PropertiesNavigationViewItems.Add(hashesItem);
 			PropertiesNavigationViewItems.Add(shortcutItem);
@@ -89,6 +109,7 @@ public static ObservableCollection<NavigationViewItemButtonStyleItem> Initialize
 				PropertiesNavigationViewItems.Remove(securityItem);
 				PropertiesNavigationViewItems.Remove(customizationItem);
 				PropertiesNavigationViewItems.Remove(hashesItem);
+				PropertiesNavigationViewItems.Remove(signaturesItem);
 			}
 			else if (item is ListedItem listedItem)
 			{
@@ -102,13 +123,17 @@ public static ObservableCollection<NavigationViewItemButtonStyleItem> Initialize
 				var detailsItemEnabled = !(isFolder && !listedItem.IsArchive) && !isLibrary && !listedItem.IsRecycleBinItem;
 				var customizationItemEnabled = !isLibrary && (isFolder && !listedItem.IsArchive || isShortcut && !listedItem.IsLinkItem);
 				var compatibilityItemEnabled = FileExtensionHelpers.IsExecutableFile(listedItem is IShortcutItem sht ? sht.TargetPath : fileExt, true);
+				var signaturesItemEnabled = !isFolder && !isLibrary && !listedItem.IsRecycleBinItem && _signableTypes.Contains(fileExt);
 
 				if (!securityItemEnabled)
 					PropertiesNavigationViewItems.Remove(securityItem);
 
 				if (!hashItemEnabled)
 					PropertiesNavigationViewItems.Remove(hashesItem);
 
+				if (!signaturesItemEnabled)
+					PropertiesNavigationViewItems.Remove(signaturesItem);
+
 				if (!isShortcut)
 					PropertiesNavigationViewItems.Remove(shortcutItem);
 
@@ -132,6 +157,7 @@ public static ObservableCollection<NavigationViewItemButtonStyleItem> Initialize
 				PropertiesNavigationViewItems.Remove(detailsItem);
 				PropertiesNavigationViewItems.Remove(customizationItem);
 				PropertiesNavigationViewItems.Remove(compatibilityItem);
+				PropertiesNavigationViewItems.Remove(signaturesItem);
 			}
 
 			return PropertiesNavigationViewItems;

src/Files.App/Data/Items/CertNodeInfoItem.cs

@@ -0,0 +1,18 @@
+// Copyright (c) Files Community
+// Licensed under the MIT License.
+
+namespace Files.App.Data.Items
+{
+	public class CertNodeInfoItem
+	{
+		public string IssuedTo { get; set; } = string.Empty;
+
+		public string IssuedBy { get; set; } = string.Empty;
+
+		public string Version { get; set; } = string.Empty;
+
+		public string ValidFrom { get; set; } = string.Empty;
+
+		public string ValidTo { get; set; } = string.Empty;
+	}
+}

src/Files.App/Data/Models/SignatureInfoItem.cs

@@ -0,0 +1,91 @@
+// Copyright (c) Files Community
+// Licensed under the MIT License.
+
+using Files.App.Utils.Signatures;
+using System.Windows.Input;
+
+namespace Files.App.Data.Models
+{
+	public sealed partial class SignatureInfoItem : ObservableObject
+	{
+		private readonly string _fileName;
+
+		private readonly IntPtr _hwndParent;
+
+		private readonly int _index;
+
+		private string _Version = string.Empty;
+		public string Version
+		{
+			get => _Version;
+			set => SetProperty(ref _Version, value);
+		}
+
+		private string _IssuedBy = string.Empty;
+		public string IssuedBy
+		{
+			get => _IssuedBy;
+			set => SetProperty(ref _IssuedBy, value);
+		}
+
+		private string _IssuedTo = string.Empty;
+		public string IssuedTo
+		{
+			get => _IssuedTo;
+			set => SetProperty(ref _IssuedTo, value);
+		}
+
+		private string _ValidFromTimestamp = string.Empty;
+		public string ValidFromTimestamp
+		{
+			get => _ValidFromTimestamp;
+			set => SetProperty(ref _ValidFromTimestamp, value);
+		}
+
+		private string _ValidToTimestamp = string.Empty;
+		public string ValidToTimestamp
+		{
+			get => _ValidToTimestamp;
+			set => SetProperty(ref _ValidToTimestamp, value);
+		}
+
+		private string _VerifiedTimestamp = string.Empty;
+		public string VerifiedTimestamp
+		{
+			get => _VerifiedTimestamp;
+			set => SetProperty(ref _VerifiedTimestamp, value);
+		}
+
+		private bool _Verified = false;
+		public bool Verified
+		{
+			get => _Verified;
+			set
+			{
+				if (SetProperty(ref _Verified, value))
+					OnPropertyChanged(nameof(Glyph));
+			}
+		}
+
+		public List<CertNodeInfoItem> SignChain { get; }
+
+		public string Glyph => Verified ? "\uE930" : "\uEA39";
+
+		public ICommand OpenDetailsCommand { get; }
+
+		public SignatureInfoItem(string fileName, int index, IntPtr hWnd, List<CertNodeInfoItem> chain)
+		{
+			_fileName = fileName;
+			_hwndParent = hWnd;
+			_index = index;
+			SignChain = chain ?? new List<CertNodeInfoItem>();
+			OpenDetailsCommand = new AsyncRelayCommand(DoOpenDetails);
+		}
+
+		private Task DoOpenDetails()
+		{
+			DigitalSignaturesUtil.DisplaySignerInfoDialog(_fileName, _hwndParent, _index);
+			return Task.CompletedTask;
+		}
+	}
+}

src/Files.App/Helpers/Win32/Win32Helper.Storage.cs

@@ -902,13 +902,13 @@ public static SafeFileHandle OpenFileForRead(string filePath, bool readWrite = f
 				(uint)FILE_ACCESS_RIGHTS.FILE_GENERIC_READ | (uint)(readWrite ? FILE_ACCESS_RIGHTS.FILE_GENERIC_WRITE : 0u), (uint)(Win32PInvoke.FILE_SHARE_READ | (readWrite ? 0 : Win32PInvoke.FILE_SHARE_WRITE)), IntPtr.Zero, Win32PInvoke.OPEN_EXISTING, (uint)Win32PInvoke.File_Attributes.BackupSemantics | flags, IntPtr.Zero), true);
 		}
 
-		public static bool GetFileDateModified(string filePath, out FILETIME dateModified)
+		public static bool GetFileDateModified(string filePath, out System.Runtime.InteropServices.ComTypes.FILETIME dateModified)
 		{
 			using var hFile = new SafeFileHandle(Win32PInvoke.CreateFileFromApp(filePath, (uint)FILE_ACCESS_RIGHTS.FILE_GENERIC_READ, Win32PInvoke.FILE_SHARE_READ, IntPtr.Zero, Win32PInvoke.OPEN_EXISTING, (uint)Win32PInvoke.File_Attributes.BackupSemantics, IntPtr.Zero), true);
 			return Win32PInvoke.GetFileTime(hFile.DangerousGetHandle(), out _, out _, out dateModified);
 		}
 
-		public static bool SetFileDateModified(string filePath, FILETIME dateModified)
+		public static bool SetFileDateModified(string filePath, System.Runtime.InteropServices.ComTypes.FILETIME dateModified)
 		{
 			using var hFile = new SafeFileHandle(Win32PInvoke.CreateFileFromApp(filePath, (uint)FILE_ACCESS_RIGHTS.FILE_WRITE_ATTRIBUTES, 0, IntPtr.Zero, Win32PInvoke.OPEN_EXISTING, (uint)Win32PInvoke.File_Attributes.BackupSemantics, IntPtr.Zero), true);
 			return Win32PInvoke.SetFileTime(hFile.DangerousGetHandle(), new(), new(), dateModified);