Added onboarding experience on mobile (#91)

Author: d2dyno1

src/Core/SecureFolderFS.Core.Cryptography/Constants.cs

@@ -10,6 +10,7 @@ public static class KeyTraits
             public const int MAC_KEY_LENGTH = 32;
             public const int ARGON2_KEK_LENGTH = 32;
             public const int CHALLENGE_KEY_PART_LENGTH = 128;
+            public const int ECIES_SHA256_AESGCM_STDX963_KEY_LENGTH = 32;
         }
 
         public static class CipherId

src/Core/SecureFolderFS.Core.FileSystem/Helpers/Paths/Abstract/AbstractPathHelpers.Directory.cs

@@ -10,8 +10,11 @@ namespace SecureFolderFS.Core.FileSystem.Helpers.Paths.Abstract
 {
     public static partial class AbstractPathHelpers
     {
-        public static async Task<bool> GetDirectoryIdAsync(IFolder folderOfDirectoryId, FileSystemSpecifics specifics,
-            Memory<byte> directoryId, CancellationToken cancellationToken)
+        public static async Task<bool> GetDirectoryIdAsync(
+            IFolder folderOfDirectoryId,
+            FileSystemSpecifics specifics,
+            Memory<byte> directoryId,
+            CancellationToken cancellationToken)
         {
             if (folderOfDirectoryId.Id == specifics.ContentFolder.Id)
                 return false;

src/Core/SecureFolderFS.Core.FileSystem/Storage/CryptoFolder.cs

@@ -143,7 +143,7 @@ public async Task<IChildFolder> CreateFolderAsync(string name, bool overwrite =
             await directoryIdStream.WriteAsync(directoryId, cancellationToken);
 
             // Set DirectoryID to known IDs
-            specifics.DirectoryIdCache.CacheSet(directoryIdFile.Id, new(Guid.NewGuid().ToByteArray()));
+            specifics.DirectoryIdCache.CacheSet(directoryIdFile.Id, new(directoryId));
 
             return (IChildFolder)Wrap(folder, name);
         }

src/Core/SecureFolderFS.Core/Constants.cs

@@ -21,8 +21,7 @@ public static class Authentication
                 public const string AUTH_KEYFILE = "key_file";
                 public const string AUTH_WINDOWS_HELLO = "windows_hello";
                 public const string AUTH_HARDWARE_KEY = "hardware_key";
-                public const string AUTH_APPLE_FACEID = "apple_faceid";
-                public const string AUTH_APPLE_TOUCHID = "apple_touchid";
+                public const string AUTH_APPLE_BIOMETRIC = "apple_secure_enclave";
                 public const string AUTH_ANDROID_BIOMETRIC = "android_biometrics";
 
                 public const string AUTH_DEVICE_PING = "device_ping";

src/Core/SecureFolderFS.Core/DataModels/VaultProtectedKeyDataModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.ComponentModel;
+using System.Text.Json.Serialization;
+
+namespace SecureFolderFS.Core.DataModels
+{
+    [Serializable]
+    public record class VaultProtectedKeyDataModel : VaultCapabilityDataModel
+    {
+        /// <summary>
+        /// Gets the ciphertext key material.
+        /// </summary>
+        [JsonPropertyName("c_protectedkey")]
+        [DefaultValue(null)]
+        public byte[]? CiphertextKey { get; set; }
+    }
+}

src/Core/SecureFolderFS.Core/VaultAccess/VaultReader.cs

@@ -50,13 +50,14 @@ public async Task<VersionDataModel> ReadVersionAsync(CancellationToken cancellat
             return await ReadDataAsync<VersionDataModel>(configFile, _serializer, cancellationToken);
         }
 
-        public async Task<VaultChallengeDataModel?> ReadAuthenticationAsync(string fileName, CancellationToken cancellationToken)
+        public async Task<TCapability?> ReadAuthenticationAsync<TCapability>(string fileName, CancellationToken cancellationToken)
+            where TCapability : VaultCapabilityDataModel
         {
             try
             {
                 // Try to get authentication file
                 var authFile = await _vaultFolder.GetFileByNameAsync(fileName, cancellationToken);
-                return await ReadDataAsync<VaultChallengeDataModel?>(authFile, _serializer, cancellationToken);
+                return await ReadDataAsync<TCapability?>(authFile, _serializer, cancellationToken);
             }
             catch (Exception)
             {

src/Core/SecureFolderFS.Core/VaultAccess/VaultWriter.cs

@@ -42,7 +42,8 @@ public async Task WriteConfigurationAsync(VaultConfigurationDataModel? configDat
             await WriteDataAsync(configFile, configDataModel, cancellationToken);
         }
 
-        public async Task WriteAuthenticationAsync(string fileName, VaultChallengeDataModel? authDataModel, CancellationToken cancellationToken)
+        public async Task WriteAuthenticationAsync<TCapability>(string fileName, TCapability? authDataModel, CancellationToken cancellationToken)
+            where TCapability : VaultCapabilityDataModel
         {
             var authFile = authDataModel is null ? null : _vaultFolder switch
             {

src/Platforms/Directory.Packages.props

@@ -2,6 +2,7 @@
   <ItemGroup>
     <PackageVersion Include="AathifMahir.Maui.MauiIcons.Cupertino" Version="4.0.0" />
     <PackageVersion Include="AathifMahir.Maui.MauiIcons.Material" Version="4.0.0" />
+    <PackageVersion Include="AcrylicView.Maui" Version="2.1.3" />
     <PackageVersion Include="CommunityToolkit.Maui" Version="11.2.0" />
     <PackageVersion Include="CommunityToolkit.Maui.MediaElement" Version="6.0.2" />
     <PackageVersion Include="CommunityToolkit.WinUI.Animations" Version="8.2.250402" />

src/Platforms/SecureFolderFS.Maui/App.xaml.cs

@@ -32,6 +32,9 @@ public App()
 #if ANDROID
             // Load Android-specific resource dictionaries
             Resources.MergedDictionaries.Add(new Platforms.Android.Templates.AndroidDataTemplates());
+#elif IOS
+            // Load IOS-specific resource dictionaries
+            Resources.MergedDictionaries.Add(new Platforms.iOS.Templates.IOSDataTemplates());
 #endif
 
             // Configure mappers

src/Platforms/SecureFolderFS.Maui/AppShell.xaml.cs

@@ -34,7 +34,7 @@ private async void AppShell_Loaded(object? sender, EventArgs e)
             var overlayService = DI.Service<IOverlayService>();
             var messageOverlay = new MessageOverlayViewModel()
             {
-                Title = SafetyHelpers.NoThrowResult(() => string.Format("ClosedUnexpectedly".ToLocalized(), nameof(SecureFolderFS))),
+                Title = "ClosedUnexpectedly".ToLocalized(nameof(SecureFolderFS)),
                 PrimaryText = "Close".ToLocalized(),
                 Message = sessionException
             };