diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..8187f1b
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,6 @@
+[submodule "src/common/crypto"]
+	path = src/common/crypto
+	url = ../../bslathi19/crypto.git
+[submodule "src/common/taxi"]
+	path = src/common/taxi
+	url = ../../bslathi19/taxi.git
diff --git a/src/common/crypto b/src/common/crypto
new file mode 160000
index 0000000..2fd1136
--- /dev/null
+++ b/src/common/crypto
@@ -0,0 +1 @@
+Subproject commit 2fd1136154abcb9882f494296a05bf3d89b38acc
diff --git a/src/common/taxi b/src/common/taxi
new file mode 160000
index 0000000..8328f50
--- /dev/null
+++ b/src/common/taxi
@@ -0,0 +1 @@
+Subproject commit 8328f50673776b7937714f01bcd17dd64a7b8b99