feat(AsymCryptService): Vault.get RSADecryptor hinzugefügt

- Optionen aktualisiert, um Vault-Parameter hinzufügen zu können. Wenn es null ist, ist Vault der erste Entschlüsseler.
 - Standard-Entschlüssler entfernt.

DigitalData.Core.Abstractions/Security/IAsymCryptService.cs

@@ -4,7 +4,7 @@
     {
         IEnumerable<IRSADecryptor> Decryptors { get; }
 
-        IRSADecryptor Default { get; }
+        IRSADecryptor Vault { get; }
 
         IRSADecryptor this[string key] { get; }
 

DigitalData.Core.Security/AsymCryptService.cs

@@ -10,14 +10,12 @@ namespace DigitalData.Core.Security
     public class AsymCryptService<TAsymCryptParams> : RSAFactory<TAsymCryptParams>, IAsymCryptService<TAsymCryptParams>, IRSAFactory<TAsymCryptParams>, IEnumerable<IRSADecryptor>
         where TAsymCryptParams : AsymCryptParams
     {
-        public IEnumerable<IRSADecryptor> Decryptors => _params.Decryptors;
+        public IEnumerable<IRSADecryptor> Decryptors { get; }
-
+        
-        public IRSADecryptor Default => Decryptors.FirstOrDefault()
+        /// <summary>
-            ?? throw new InvalidOperationException(
+        /// It is a separate decryptor for permanently stored encrypted data. It is assigned to the first Default decryptor by default.
-                "No default decryptor is available. Ensure that at least one decryptor is configured in the provided parameters. " +
+        /// </summary>
-                "This issue typically arises if the configuration for decryptors is incomplete or missing. " +
+        public IRSADecryptor Vault { get; }
-                "Check the 'Decryptors' collection in the configuration and verify that it contains valid entries."
-            );
 
         public IRSADecryptor this[string key]
         {
@@ -36,6 +34,17 @@ namespace DigitalData.Core.Security
         public AsymCryptService(IOptions<TAsymCryptParams> options, ILogger<AsymCryptService<TAsymCryptParams>>? logger = null) : base(options)
         {
             logger?.LogInformation("Core.Secrets version: {Version}, Created on: {CreationDate}.", Secrets.Version, Secrets.CreationDate.ToString("dd.MM.yyyy"));
+
+            if (!_params.Decryptors.Any())
+                throw new InvalidOperationException(
+                    "Any decryptor is not found. Ensure that at least one decryptor is configured in the provided parameters. " +
+                    "This issue typically arises if the configuration for decryptors is incomplete or missing. " +
+                    "Check the 'Decryptors' collection in the configuration and verify that it contains valid entries."
+                );
+
+            Decryptors = _params.Decryptors;
+
+            Vault = _params.Vault ?? Decryptors.First();
         }
 
         public IEnumerator<IRSADecryptor> GetEnumerator() => Decryptors.GetEnumerator();

DigitalData.Core.Security/Config/AsymCryptParams.cs

@@ -36,6 +36,8 @@ namespace DigitalData.Core.Security.Config
 
         public IEnumerable<RSADecryptor> Decryptors { get; init; } = new List<RSADecryptor>();
 
+        public RSADecryptor? Vault { get; init; }
+
         public override void OnDeserialized()
         {
             base.OnDeserialized();

DigitalData.Core.Security/Cryptographer/RSACryptographer.cs

@@ -3,6 +3,7 @@ using System.Security.Cryptography;
 
 namespace DigitalData.Core.Security.Cryptographer
 {
+    //TODO: Abstract RSA for future updates (using ECC, El Gamal or Lattice-based Cryptography)
     public class RSACryptographer : IRSACryptographer
     {
         public virtual string Pem { get; init; }