diff --git a/diffie-culter/grader.py b/diffie-culter/grader.py
new file mode 100644
index 0000000..abec8e0
--- /dev/null
+++ b/diffie-culter/grader.py
@@ -0,0 +1,4 @@
+def grade(autogen, answer):
+	if answer == ("906730649345"):
+		return True, "Correct!"
+	return False, "Nope, try again."