def test_fake_mac_fail_wrong_primitive(self):
mac = helper.FakeMac('Name')
mac_value = mac.compute_mac(b'data')
wrong_mac = helper.FakeMac('Wrong Name')
with self.assertRaisesRegex(tink_error.TinkError,
'invalid mac'):
wrong_mac.verify_mac(mac_value, b'data')
def test_wrap_success(self):
self.reg.register_primitive_wrapper(mac.MacWrapper())
mac1 = helper.FakeMac('FakeMac1')
mac2 = helper.FakeMac('FakeMac2')
wrapped_mac = self.reg.wrap(_mac_set([mac1, mac2]))
wrapped_mac.verify_mac(mac1.compute_mac(b'data1'), b'data1')
wrapped_mac.verify_mac(mac2.compute_mac(b'data2'), b'data2')
wrapped_mac.verify_mac(wrapped_mac.compute_mac(b'data'), b'data')
def test_list_of_entries_can_be_modified(self):
primitive_set = core.new_primitive_set(mac.Mac)
key = helper.fake_key(key_id=1)
primitive_set.add_primitive(helper.FakeMac('FakeMac'), key)
entries = primitive_set.primitive(key)
entries.append('Something')
self.assertLen(primitive_set.primitive(key), 1)
def test_add_invalid_key_fails(self):
primitive_set = core.new_primitive_set(mac.Mac)
key = helper.fake_key()
key.ClearField('output_prefix_type')
with self.assertRaisesRegex(core.TinkError,
'invalid OutputPrefixType'):
primitive_set.add_primitive(helper.FakeMac(), key)
def test_primitive_wrapper_reset(self):
self.reg.register_primitive_wrapper(mac.MacWrapper())
self.reg.reset()
with self.assertRaisesRegex(
core.TinkError,
'No PrimitiveWrapper registered for primitive Mac.'):
self.reg.wrap(_mac_set([helper.FakeMac()]))
def test_same_key_id_and_prefix_type(self):
primitive_set = core.new_primitive_set(mac.Mac)
key1 = helper.fake_key(key_id=1, status=tink_pb2.ENABLED)
fake_mac1 = helper.FakeMac('FakeMac1')
primitive_set.add_primitive(fake_mac1, key1)
key2 = helper.fake_key(key_id=1, status=tink_pb2.DISABLED)
fake_mac2 = helper.FakeMac('FakeMac2')
primitive_set.add_primitive(fake_mac2, key2)
expected_ident = crypto_format.output_prefix(key1)
entries = primitive_set.primitive(key1)
self.assertLen(entries, 2)
self.assertEqual(fake_mac1, entries[0].primitive)
self.assertEqual(fake_mac2, entries[1].primitive)
self.assertEqual(tink_pb2.ENABLED, entries[0].status)
self.assertEqual(tink_pb2.DISABLED, entries[1].status)
self.assertEqual(expected_ident, entries[0].identifier)
self.assertEqual(expected_ident, entries[1].identifier)
self.assertLen(primitive_set.primitive(key2), 2)
def test_primary_returns_primary(self):
primitive_set = core.new_primitive_set(mac.Mac)
key = helper.fake_key(key_id=1)
fake_mac = helper.FakeMac('FakeMac')
entry = primitive_set.add_primitive(fake_mac, key)
primitive_set.set_primary(entry)
entry = primitive_set.primary()
self.assertEqual(fake_mac, entry.primitive)
self.assertEqual(tink_pb2.ENABLED, entry.status)
self.assertEqual(crypto_format.output_prefix(key), entry.identifier)
def test_raw_primitives(self):
primitive_set = core.new_primitive_set(mac.Mac)
primitive_set.add_primitive(helper.FakeMac('FakeMac1'),
helper.fake_key(key_id=1))
key2 = helper.fake_key(key_id=1, output_prefix_type=tink_pb2.RAW)
fake_mac2 = helper.FakeMac('FakeMac2')
primitive_set.add_primitive(fake_mac2, key2)
key3 = helper.fake_key(key_id=3,
status=tink_pb2.DISABLED,
output_prefix_type=tink_pb2.RAW)
fake_mac3 = helper.FakeMac('FakeMac3')
primitive_set.add_primitive(fake_mac3, key3)
entries = primitive_set.raw_primitives()
self.assertLen(entries, 2)
self.assertEqual(fake_mac2, entries[0].primitive)
self.assertEqual(tink_pb2.ENABLED, entries[0].status)
self.assertEqual(crypto_format.RAW_PREFIX, entries[0].identifier)
self.assertEqual(fake_mac3, entries[1].primitive)
self.assertEqual(tink_pb2.DISABLED, entries[1].status)
self.assertEqual(crypto_format.RAW_PREFIX, entries[1].identifier)
def test_verify_unknown_mac_fails(self):
unknown_tag = helper.FakeMac('UnknownfakeMac').compute_mac(b'data')
pset = core.new_primitive_set(mac.Mac)
primitive, raw_key = self.new_primitive_key_pair(1234, tink_pb2.RAW)
new_primitive, new_key = self.new_primitive_key_pair(5678, tink_pb2.TINK)
pset.add_primitive(primitive, raw_key)
new_entry = pset.add_primitive(new_primitive, new_key)
pset.set_primary(new_entry)
wrapped_mac = mac_wrapper.MacWrapper().wrap(pset)
with self.assertRaisesRegex(core.TinkError, 'invalid MAC'):
wrapped_mac.verify_mac(unknown_tag, b'data')
def test_same_key_id_but_different_prefix_type(self):
primitive_set = core.new_primitive_set(mac.Mac)
key1 = helper.fake_key(key_id=1, output_prefix_type=tink_pb2.TINK)
fake_mac1 = helper.FakeMac('FakeMac1')
primitive_set.add_primitive(fake_mac1, key1)
key2 = helper.fake_key(key_id=1, output_prefix_type=tink_pb2.LEGACY)
fake_mac2 = helper.FakeMac('FakeMac2')
primitive_set.add_primitive(fake_mac2, key2)
entries1 = primitive_set.primitive(key1)
self.assertLen(entries1, 1)
self.assertEqual(fake_mac1, entries1[0].primitive)
self.assertEqual(tink_pb2.ENABLED, entries1[0].status)
self.assertEqual(crypto_format.output_prefix(key1),
entries1[0].identifier)
entries2 = primitive_set.primitive(key2)
self.assertLen(entries2, 1)
self.assertEqual(fake_mac2, entries2[0].primitive)
self.assertEqual(tink_pb2.ENABLED, entries2[0].status)
self.assertEqual(crypto_format.output_prefix(key2),
entries2[0].identifier)
def test_primitive_from_identifier_returns_entry(self):
primitive_set = core.new_primitive_set(mac.Mac)
key = helper.fake_key(key_id=1)
fake_mac = helper.FakeMac('FakeMac')
primitive_set.add_primitive(fake_mac, key)
ident = crypto_format.output_prefix(key)
entries = primitive_set.primitive_from_identifier(ident)
self.assertLen(entries, 1)
entry = entries[0]
self.assertEqual(fake_mac, entry.primitive)
self.assertEqual(tink_pb2.ENABLED, entry.status)
self.assertEqual(ident, entry.identifier)
def test_wrap_unknown_primitive(self):
with self.assertRaisesRegex(
core.TinkError,
'No PrimitiveWrapper registered for primitive Mac.'):
self.reg.wrap(_mac_set([helper.FakeMac()]))
def test_primary_returns_none(self):
primitive_set = core.new_primitive_set(mac.Mac)
primitive_set.add_primitive(helper.FakeMac('FakeMac'),
helper.fake_key(key_id=1))
self.assertEqual(primitive_set.primary(), None)
def test_add_wrong_primitive_fails(self):
primitive_set = core.new_primitive_set(aead.Aead)
with self.assertRaisesRegex(core.TinkError,
'The primitive is not an instance of '):
primitive_set.add_primitive(helper.FakeMac(), helper.fake_key())
def test_fake_mac_success(self):
mac = helper.FakeMac('Name')
mac_value = mac.compute_mac(b'data')
mac.verify_mac(mac_value, b'data')
def wrap(self, _): return helper.FakeMac()
def new_primitive_key_pair(self, key_id, output_prefix_type):
fake_key = helper.fake_key(
key_id=key_id, output_prefix_type=output_prefix_type)
fake_mac = helper.FakeMac('fakeMac {}'.format(key_id))
return fake_mac, fake_key
