refactor(Privatekey): Die Klasse encryptor wurde erstellt und die Verschlüsselungsfunktionen wurden zur einfachen und sauberen Konfiguration dorthin verschoben.

DigitalData.Core.Security/RSAKey/RSADecryptor.cs

@@ -1,9 +1,33 @@
 using DigitalData.Core.Abstractions.Security;
+using System.Reflection;
+using System.Security.Cryptography;
 
 namespace DigitalData.Core.Security.RSAKey
 {
     public class RSADecryptor : RSAPrivateKey, IAsymmetricDecryptor
     {
+        public RSAEncryptionPadding Padding { get; init; } = RSAEncryptionPadding.OaepSHA256;
+
+        // TODO: add as json converter to IConfigurIConfiguration.Config
+        public string PaddingName
+        {
+            get => Padding.ToString();
+            init => Padding = typeof(RSAEncryptionPadding).GetProperty(value, BindingFlags.Public | BindingFlags.Static)?.GetValue(null) as RSAEncryptionPadding ?? throw new ArgumentException($"Padding '{value}' not found.");
+        }
+
         public byte[] Decrypt(byte[] data) => RSA.Decrypt(data, Padding);
+
+        private readonly Lazy<IAsymmetricEncryptor> _lazyEncryptor;
+
+        public IAsymmetricEncryptor Encryptor => _lazyEncryptor.Value;
+
+        public RSADecryptor()
+        {
+            _lazyEncryptor = new(() => new RSAEncryptor()
+            {
+                Content = RSA.ExportRSAPublicKeyPem(),
+                Padding = Padding
+            });
+        }
     }
 }