diff --git a/server/middleware/authenticate.js b/server/middleware/authenticate.js
new file mode 100644
index 0000000..4a96c9a
--- /dev/null
+++ b/server/middleware/authenticate.js
@@ -0,0 +1,19 @@
+const { User } = require("./../models/user");
+
+var authenticate = (res, res, next) => {
+  var token = req.header('x-auth');
+
+  User.findByToken(token).then((user) => {
+    if(!user) {
+      return Promise.reject();
+    }
+
+    req.user = user;
+    req.token = token;
+    next();
+  }).catch(e => {
+    res.status(400).send();
+  });
+};
+
+module.exports = { authenticate };
\ No newline at end of file