Add signing to the ACI converter

endpoints/web.py

@@ -1,7 +1,7 @@
 import logging
 
 from flask import (abort, redirect, request, url_for, make_response, Response,
-                   Blueprint, send_from_directory, jsonify)
+                   Blueprint, send_from_directory, jsonify, send_file)
 
 from avatar_generator import Avatar
 from flask.ext.login import current_user
@@ -10,7 +10,7 @@ from health.healthcheck import HealthCheck
 
 from data import model
 from data.model.oauth import DatabaseAuthorizationProvider
-from app import app, billing as stripe, build_logs, avatar
+from app import app, billing as stripe, build_logs, avatar, signer
 from auth.auth import require_session_login, process_oauth
 from auth.permissions import AdministerOrganizationPermission, ReadRepositoryPermission
 from util.invoice import renderInvoiceToPdf
@@ -57,6 +57,14 @@ def snapshot(path = ''):
   abort(404)
 
 
+@web.route('/aci-signing-key')
+@no_cache
+def aci_signing_key():
+  if not signer.name:
+    abort(404)
+
+  return send_file(signer.public_key_path)
+
 @web.route('/plans/')
 @no_cache
 @route_show_if(features.BILLING)