.. This file is part of GNU TALER. Copyright (C) 2014, 2015, 2016 INRIA TALER is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2.1, or (at your option) any later version. TALER is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with TALER; see the file COPYING. If not, see @author Marcello Stanisci ======== Merchant ======== ------------ Introduction ------------ TBD .. _merchant-arch: ------ Design ------ TO REVIEW:: The `frontend` is the existing shopping portal of the merchant. The architecture tries to minimize the amount of modifications necessary to the `frontend` as well as the trust that needs to be placed into the `frontend` logic. Taler requires the frontend to facilitate two JSON-based interactions between the wallet and the `backend`, and one of those is trivial. The `backend` is a standalone C application intended to implement all the cryptographic routines required to interact with the Taler wallet and a Taler exchange.