feat(RSAKey): Unterverzeichnisse auth, base und crypto erstellt und zugehörige RSA-Klassen verschoben

DigitalData.Core.Security/RSAKey/Base/RSAKeyBase.cs

@@ -0,0 +1,15 @@
+using DigitalData.Core.Abstractions.Security;
+using System.Security.Cryptography;
+
+namespace DigitalData.Core.Security.RSAKey.Base;
+
+public class RSAKeyBase : IAsymmetricKey
+{
+#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+    public virtual string Content { get; init; }
+#pragma warning restore CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.
+
+    public string? Id { get; init; }
+
+    protected virtual RSA RSA { get; } = RSA.Create();
+}

DigitalData.Core.Security/RSAKey/Base/RSAPrivateKey.cs

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+using DigitalData.Core.Abstractions.Security;
+using System.Security.Cryptography;
+
+namespace DigitalData.Core.Security.RSAKey.Base;
+
+public class RSAPrivateKey : RSAKeyBase, IAsymmetricPrivateKey, IAsymmetricKey
+{
+    private string? _pem;
+
+    public override string Content
+    {
+#pragma warning disable CS8603 // Possible null reference return.
+        get => _pem;
+#pragma warning restore CS8603 // Possible null reference return.
+        init
+        {
+            _pem = value;
+            Init();
+        }
+    }
+
+    public bool IsPemNull => _pem is null;
+
+    public bool IsEncrypted { get; init; }
+
+    protected TPublicKey CreatePublicKey<TPublicKey>() where TPublicKey : RSAPublicKey, new()
+        => new() { Content = RSA.ExportRSAPublicKeyPem() };
+
+    private readonly Lazy<RSAPublicKey> _lazyPublicKey;
+
+    public IAsymmetricPublicKey PublicKey => _lazyPublicKey.Value;
+
+    public RSAPrivateKey()
+    {
+        _lazyPublicKey = new(CreatePublicKey<RSAPublicKey>);
+    }
+
+    internal void SetPem(string pem)
+    {
+        _pem = pem;
+        Init();
+    }
+
+    private void Init()
+    {
+        if (string.IsNullOrEmpty(_pem))
+            throw new InvalidOperationException($"The content of RSA private key is null or empty. Id: {Id}.");
+
+        if (IsEncrypted)
+            RSA.ImportFromEncryptedPem(Content, Secrets.PBE_PASSWORD.AsSpan());
+        else
+            RSA.ImportFromPem(Content);
+    }
+}

DigitalData.Core.Security/RSAKey/Base/RSAPublicKey.cs

@@ -0,0 +1,16 @@
+using DigitalData.Core.Abstractions.Security;
+
+namespace DigitalData.Core.Security.RSAKey.Base;
+
+public class RSAPublicKey : RSAKeyBase, IAsymmetricPublicKey, IAsymmetricKey
+{
+    public override string Content
+    {
+        get => base.Content;
+        init
+        {
+            base.Content = value;
+            RSA.ImportFromPem(value);
+        }
+    }
+}