Extracted serialiser for encryption into a flask module

- allows mocking easier
- shared across methods
- not built everytime

app/__init__.py

@@ -13,13 +13,14 @@ from utils import logging
 from notify_client import NotifyAPIClient
 from app.celery.celery import NotifyCelery
 from app.clients.sms.twilio import TwilioClient
+from app.encryption import Encryption
 
 db = SQLAlchemy()
 ma = Marshmallow()
 notify_alpha_client = NotifyAPIClient()
 notify_celery = NotifyCelery()
 twilio_client = TwilioClient()
-
+encryption = Encryption()
 
 api_user = LocalProxy(lambda: _request_ctx_stack.top.api_user)
 
@@ -36,6 +37,7 @@ def create_app(config_name, config_overrides=None):
     logging.init_app(application)
     twilio_client.init_app(application)
     notify_celery.init_app(application)
+    encryption.init_app(application)
 
     from app.service.rest import service as service_blueprint
     from app.user.rest import user as user_blueprint