Implemented U2F, refactored Two Factor authentication, registering U2F device and authentication should work. Works on Chrome on MacOS with a virtual device.

migrations/2018-07-11-181453_create_u2f_twofactor/down.sql

@@ -0,0 +1,8 @@
+UPDATE users
+SET totp_secret = (
+    SELECT twofactor.data FROM twofactor
+    WHERE twofactor.type = 0 
+    AND twofactor.user_uuid = users.uuid
+);
+
+DROP TABLE twofactor;