diff --git a/DigitalData.Core.Security/AsymCryptService.cs b/DigitalData.Core.Security/AsymCryptService.cs
index 3eafa0a..41539a2 100644
--- a/DigitalData.Core.Security/AsymCryptService.cs
+++ b/DigitalData.Core.Security/AsymCryptService.cs
@@ -31,6 +31,13 @@ namespace DigitalData.Core.Security
             }
         }
 
+        public IRSADecryptor this[int index] => index < 0 || index >= Decryptors.Count()
+            ? Decryptors.ElementAt(index)
+            : throw new ArgumentOutOfRangeException(
+                nameof(index),
+                index,
+                $"The index {index} is out of range. The valid indices for {GetType()} are between 0 and {Decryptors.Count() - 1} (inclusive). Please ensure the index is within this range.");
+
         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"));