diff --git a/README.md b/README.md
index a3250ac..ae049e2 100644
--- a/README.md
+++ b/README.md
@@ -61,4 +61,5 @@ console.log(recovery64(
 
 ## Links
 - [crapto1](https://github.com/li0ard/crapto1) - Original version in C
-- [Crapto1Sharp](https://github.com/kgamecarter/Crapto1Sharp) - Version in C#
\ No newline at end of file
+- [Crapto1Sharp](https://github.com/kgamecarter/Crapto1Sharp) - Version in C#
+- [mfkey32nested](https://github.com/RfidResearchGroup/proxmark3/blob/master/tools/mfc/card_reader/mfkey32nested.c) - Original version in C
\ No newline at end of file