🐛 Dozen of bugs fixes

DysonNetwork.Sphere/Auth/OidcProvider/Options/OidcProviderOptions.cs

@@ -1,13 +1,36 @@
-using System;
+using System.Security.Cryptography;
 
 namespace DysonNetwork.Sphere.Auth.OidcProvider.Options;
 
 public class OidcProviderOptions
 {
     public string IssuerUri { get; set; } = "https://your-issuer-uri.com";
-    public string SigningKey { get; set; } = "replace-with-a-secure-random-key";
+    public string? PublicKeyPath { get; set; }
+    public string? PrivateKeyPath { get; set; }
     public TimeSpan AccessTokenLifetime { get; set; } = TimeSpan.FromHours(1);
     public TimeSpan RefreshTokenLifetime { get; set; } = TimeSpan.FromDays(30);
     public TimeSpan AuthorizationCodeLifetime { get; set; } = TimeSpan.FromMinutes(5);
     public bool RequireHttpsMetadata { get; set; } = true;
-}
+
+    public RSA? GetRsaPrivateKey()
+    {
+        if (string.IsNullOrEmpty(PrivateKeyPath) || !File.Exists(PrivateKeyPath))
+            return null;
+
+        var privateKey = File.ReadAllText(PrivateKeyPath);
+        var rsa = RSA.Create();
+        rsa.ImportFromPem(privateKey.AsSpan());
+        return rsa;
+    }
+
+    public RSA? GetRsaPublicKey()
+    {
+        if (string.IsNullOrEmpty(PublicKeyPath) || !File.Exists(PublicKeyPath))
+            return null;
+
+        var publicKey = File.ReadAllText(PublicKeyPath);
+        var rsa = RSA.Create();
+        rsa.ImportFromPem(publicKey.AsSpan());
+        return rsa;
+    }
+}