diff --git a/asset-transfer-basic/chaincode-external/.gitignore b/asset-transfer-basic/chaincode-external/.gitignore
index 9db4ee63..438df6cb 100644
--- a/asset-transfer-basic/chaincode-external/.gitignore
+++ b/asset-transfer-basic/chaincode-external/.gitignore
@@ -1,2 +1,3 @@
 *.tar.gz
 *.tgz
+crypto/*.pem
diff --git a/asset-transfer-basic/chaincode-external/crypto/.gitkeep b/asset-transfer-basic/chaincode-external/crypto/.gitkeep
new file mode 100644
index 00000000..e69de29b