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# -*- coding: utf-8 -*-
# Copyright 2014 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
from unpaddedbase64 import encode_base64
from signedjson.sign import (
sign_json, verify_signed_json, signature_ids, SignatureVerifyException
)
class JsonSignTestCase(unittest.TestCase):
def setUp(self):
self.message = {'foo': 'bar', 'unsigned': {}}
self.sigkey = MockSigningKey()
self.assertEqual(self.sigkey.alg, 'mock')
self.signed = sign_json(self.message, 'Alice', self.sigkey)
self.verkey = MockVerifyKey()
def test_sign_and_verify(self):
self.assertIn('signatures', self.signed)
self.assertIn('Alice', self.signed['signatures'])
self.assertIn('mock:test', self.signed['signatures']['Alice'])
self.assertEqual(
self.signed['signatures']['Alice']['mock:test'],
encode_base64(b'x_______')
)
self.assertEqual(self.sigkey.signed_bytes, b'{"foo":"bar"}')
verify_signed_json(self.signed, 'Alice', self.verkey)
def test_signature_ids(self):
key_ids = signature_ids(
self.signed, 'Alice', supported_algorithms=['mock']
)
self.assertListEqual(key_ids, ['mock:test'])
def test_verify_fail(self):
self.signed['signatures']['Alice']['mock:test'] = encode_base64(
b'not a signature'
)
with self.assertRaises(SignatureVerifyException):
verify_signed_json(self.signed, 'Alice', self.verkey)
def test_verify_fail_no_signatures(self):
with self.assertRaises(SignatureVerifyException):
verify_signed_json({}, 'Alice', self.verkey)
def test_verify_fail_no_signature_for_alice(self):
with self.assertRaises(SignatureVerifyException):
verify_signed_json({'signatures': {}}, 'Alice', self.verkey)
def test_verify_fail_not_base64(self):
invalid = {'signatures': {'Alice': {'mock:test': 'not base64'}}}
with self.assertRaises(SignatureVerifyException):
verify_signed_json(invalid, 'Alice', self.verkey)
class MockSigningKey(object):
alg = "mock"
version = "test"
def sign(self, signed_bytes):
self.signed_bytes = signed_bytes
return MockSignature()
class MockVerifyKey(object):
alg = "mock"
version = "test"
def verify(self, message, sig):
if not sig == b"x_______":
raise Exception()
class MockSignature(object):
def __init__(self):
self.signature = b"x_______"
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