diff --git a/DigitalData.Core.Security/RSACryptographer.cs b/DigitalData.Core.Security/RSACryptographer.cs
index 72959a6..7717071 100644
--- a/DigitalData.Core.Security/RSACryptographer.cs
+++ b/DigitalData.Core.Security/RSACryptographer.cs
@@ -5,7 +5,7 @@ namespace DigitalData.Core.Security
 {
     public class RSACryptographer : IRSACryptographer
     {
-        public required string Pem { get; init; }
+        public required virtual string Pem { get; init; }
 
         public required RSAEncryptionPadding Padding { get; init; }
 
diff --git a/DigitalData.Core.Security/RSADecryptor.cs b/DigitalData.Core.Security/RSADecryptor.cs
index 8078837..a8ad4a7 100644
--- a/DigitalData.Core.Security/RSADecryptor.cs
+++ b/DigitalData.Core.Security/RSADecryptor.cs
@@ -1,5 +1,6 @@
 using DigitalData.Core.Abstractions.Security;
 using DigitalData.Core.Security.Extensions;
+using System.Runtime.Serialization;
 
 namespace DigitalData.Core.Security
 {
@@ -21,8 +22,26 @@ namespace DigitalData.Core.Security
             }
         }
 
-        public RSADecryptor()
+        public RSADecryptor() { }
+
+        public RSADecryptor(string pem, string? password = null)
         {
+            Pem = pem;
+            Password = password;
+            Initialize();
+        }
+
+        [OnDeserialized]
+        private void OnDeserialized(StreamingContext context)
+        {
+            Initialize();
+        }
+
+        private void Initialize()
+        {
+            if (string.IsNullOrWhiteSpace(Pem))
+                throw new InvalidOperationException("Pem cannot be null or empty.");
+
             if (Password is null)
                 _rsa.ImportFromPem(Pem);
             else
diff --git a/DigitalData.Core.Security/RSAEncryptor.cs b/DigitalData.Core.Security/RSAEncryptor.cs
index e0c6334..4ee7e13 100644
--- a/DigitalData.Core.Security/RSAEncryptor.cs
+++ b/DigitalData.Core.Security/RSAEncryptor.cs
@@ -5,9 +5,17 @@ namespace DigitalData.Core.Security
 {
     public class RSAEncryptor : RSACryptographer, IRSAEncryptor, IRSACryptographer
     {
-        public RSAEncryptor()
-        {
-            _rsa.ImportFromPem(Pem);
+        public override required string Pem
+        { 
+            get => base.Pem;            
+            init
+            {
+                if (string.IsNullOrWhiteSpace(Pem))
+                    throw new InvalidOperationException("Pem cannot be null or empty.");
+
+                _rsa.ImportFromPem(base.Pem);
+                base.Pem = value;
+            }
         }
 
         public byte[] Encrypt(byte[] data) => _rsa.Encrypt(data, Padding);