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# Copyright (C) 2017  Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


import jwt


JWT_SIGNING_ALGORITHM = 'RS512'


def create_token(claims, signing_key):
    return jwt.encode(
        claims,
        signing_key.exportKey('PEM'),
        algorithm=JWT_SIGNING_ALGORITHM)


def decode_token(token, key, audience):
    return jwt.decode(
        token,
        key=key.exportKey('OpenSSH'),
        audience=None, options={'verify_aud': False})