diff --git a/README.md b/README.md
index e69de29..72bc6b3 100644
--- a/README.md
+++ b/README.md
@@ -0,0 +1,4 @@
+# TEA-3
+
+Implementation of TEA-3 in rust.  
+Based on "Observations on TETRA Encryption Algorithm TEA-3" and "ETSI TS 104 053-1, TETRA Air Interface Security, Algorithms Specifications"