refactor: AsymmetricPublicKey durch ClientPublicKey ersetzt und RSA-Schlüsselverwaltung verbessert

- `AsymmetricPublicKey` in `ClientPublicKey` umbenannt
- `ClientPublicKey` von `RSAKeyBase` abgeleitet für RSA-Funktionalität
- Dynamischen PEM-Import in `UpdateContent` hinzugefügt

DigitalData.Auth.Client/AsymmetricPublicKey.cs

@@ -1,14 +0,0 @@
-using DigitalData.Core.Abstractions.Security;
-
-namespace DigitalData.Auth.Client;
-
-public class AsymmetricPublicKey : IUniqueSecurityContext, IAsymmetricPublicKey
-{
-    public required string Issuer { get; init; }
-
-    public required string Audience { get; init; }
-
-    public string? Id { get; init; }
-
-    public string Content { get; internal set; } = string.Empty;
-}

DigitalData.Auth.Client/AuthClient.cs

@@ -34,7 +34,7 @@ public class AuthClient : IAuthClient, IAsyncDisposable
 
     public bool IsConnected { get; private set; } = false;
 
-    public IEnumerable<AsymmetricPublicKey> PublicKeys => _params.PublicKeys;
+    public IEnumerable<ClientPublicKey> PublicKeys => _params.PublicKeys;
 
     public async Task StartAsync()
     {

DigitalData.Auth.Client/ClientEvents.cs

@@ -10,7 +10,7 @@ public static class ClientEvents
     public static readonly ClientEvent UpdatePublicKeys = (client, issuer, audience, content, logger) =>
     {
         if(client.PublicKeys.TryGet(issuer, audience, out var publicKey))
-            publicKey.Content = content;
+            publicKey.UpdateContent(content);
         else
             logger?.LogWarning(
                 "Failed to update public key: No matching key found. Issuer: {Issuer}, Audience: {Audience}. Ensure the key exists before attempting an update.", issuer, audience);

DigitalData.Auth.Client/ClientParams.cs

@@ -41,5 +41,5 @@ public class ClientParams
         });
     }
 
-    public List<AsymmetricPublicKey> PublicKeys { get; set; } = new();
+    public List<ClientPublicKey> PublicKeys { get; set; } = new();
 }

DigitalData.Auth.Client/ClientPublicKey.cs

@@ -0,0 +1,34 @@
+using DigitalData.Core.Abstractions.Security;
+using DigitalData.Core.Security.RSAKey;
+
+namespace DigitalData.Auth.Client;
+
+/// <summary>
+/// Represents a public RSA key, allowing dynamic updates and PEM import functionality.
+/// </summary>
+public class ClientPublicKey : RSAKeyBase, IAsymmetricPublicKey, IAsymmetricKey, IUniqueSecurityContext
+{
+    public required string Issuer { get; init; }
+
+    public required string Audience { get; init; }
+
+    private string _content = string.Empty;
+
+    public override string Content
+    {
+        get
+        {
+            return _content;
+        }
+        init
+        {
+            UpdateContent(value);
+        }
+    }
+
+    public void UpdateContent(string content)
+    {
+        _content = content;
+        RSA.ImportFromPem(content);
+    }
+}

DigitalData.Auth.Client/DigitalData.Auth.Client.csproj

@@ -27,6 +27,7 @@
 	
   <ItemGroup>
     <PackageReference Include="DigitalData.Core.Abstractions" Version="3.3.0" />
+    <PackageReference Include="DigitalData.Core.Security" Version="1.0.0" />
     <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="9.0.1" />
   </ItemGroup>
 	

DigitalData.Auth.Tests/Client/AuthClientTests.cs

@@ -206,7 +206,7 @@ public class AuthClientTests
     public async Task StartAsync_ShouldUpdateAllPublicKey()
     {
         // Arrange
-        var publicKey = new AsymmetricPublicKey() { Issuer = "Foo", Audience = "Bar" };
+        var publicKey = new ClientPublicKey() { Issuer = "Foo", Audience = "Bar" };
         var provider = Build(opt =>
         {
             opt.Url = _hubUrl;
@@ -229,7 +229,7 @@ public class AuthClientTests
     public async Task Reconnected_ShouldUpdateAllPublicKey()
     {
         // Arrange
-        var publicKey = new AsymmetricPublicKey() { Issuer = "Foo", Audience = "Bar" };
+        var publicKey = new ClientPublicKey() { Issuer = "Foo", Audience = "Bar" };
         var provider = Build(opt =>
         {
             opt.Url = _hubUrl;