Started trying to document symmetric encryption
diff --git a/docs/index.rst b/docs/index.rst
index 28975f3..1d8ffda 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -14,4 +14,5 @@
     :maxdepth: 2
 
     architecture
+    primitives/index
     community