diff --git a/DigitalData.Core.Security/DIExtensions.cs b/DigitalData.Core.Security/DIExtensions.cs
index 28f4596..1a75545 100644
--- a/DigitalData.Core.Security/DIExtensions.cs
+++ b/DigitalData.Core.Security/DIExtensions.cs
@@ -6,11 +6,10 @@ namespace DigitalData.Core.Security
 {
     public static class DIExtensions
     {
-        public static IServiceCollection AddSecurity(this IServiceCollection services)
+        public static IServiceCollection AddAsymCryptService<TAsymCryptParams>(this IServiceCollection services)
+            where TAsymCryptParams : AsymCryptParams
         {
-            services.TryAddScoped<IRSAFactory>(sp => RSAFactory.Static);
-            services.TryAddScoped<IAsymCryptService, AsymCryptService>();
-
+            services.TryAddScoped<IAsymCryptService<TAsymCryptParams>, AsymCryptService<TAsymCryptParams>>();
             return services;
         }
     }