diff --git a/DigitalData.Core.Security/AsymCryptParams.cs b/DigitalData.Core.Security/AsymCryptParams.cs
index 07abe5e..dfe0991 100644
--- a/DigitalData.Core.Security/AsymCryptParams.cs
+++ b/DigitalData.Core.Security/AsymCryptParams.cs
@@ -2,6 +2,6 @@
 {
     public class AsymCryptParams : RSAFactoryParams
     {
-        public IEnumerable<string>? ReadOrCreateDirs { get; init; }
+        public IEnumerable<ReadOrCreateDirectory> ReadOrCreateDirs { get; init; } = new List<ReadOrCreateDirectory>();
     }
 }
\ No newline at end of file
diff --git a/DigitalData.Core.Security/ReadOrCreateDirectory.cs b/DigitalData.Core.Security/ReadOrCreateDirectory.cs
new file mode 100644
index 0000000..c53971e
--- /dev/null
+++ b/DigitalData.Core.Security/ReadOrCreateDirectory.cs
@@ -0,0 +1,9 @@
+namespace DigitalData.Core.Security
+{
+    public class ReadOrCreateDirectory
+    {
+        public required string Dir { get; init; }
+
+        public IEnumerable<string> ReadOrCreateFiles { get; init; } = new List<string>();
+    }
+}
\ No newline at end of file