def get_hamilton_election_from_file(self) -> ElectionDescription:
with open(
os.path.join(data, "hamilton-county",
"election_manifest.json"), "r") as subject:
result = subject.read()
target = ElectionDescription.from_json(result)
return target
def test_simple_election_can_serialize(self):
# Arrange
subject = election_factory.get_simple_election_from_file()
intermediate = subject.to_json()
# Act
result = ElectionDescription.from_json(intermediate)
# Assert
self.assertIsNotNone(result.election_scope_id)
self.assertEqual(result.election_scope_id, "jefferson-county-primary")
def setupElectionBuilder(self):
# Create an election builder instance, and configure it for a single public-private keypair.
# in a real election, you would configure this for a group of guardians. See Key Ceremony for more information.
with open(os.path.join(self.manifest_path, self.manifest_file),
"r") as manifest:
string_representation = manifest.read()
election_description = ElectionDescription.from_json(
string_representation)
builder = ElectionBuilder(
number_of_guardians=self.
NUMBER_OF_GUARDIANS, # since we will generate a single public-private keypair, we set this to 1
quorum=self.
QUORUM, # since we will generate a single public-private keypair, we set this to 1
description=election_description)
builder.set_public_key(self.joint_public_key)
self.metadata, self.context = get_optional(builder.build())
self.builder = builder
def create() -> Tuple:
"""
An election with only one guardian and random keys gets generated.
More configuration options and the ability to hold a key ceremony should be added later.
"""
# Open an election manifest file
with open(os.path.join(ELECTION_MANIFEST), "r") as manifest:
string_representation = manifest.read()
election_description = ElectionDescription.from_json(
string_representation)
# Create an election builder instance, and configure it for a single public-private keypair.
# in a real election, you would configure this for a group of guardians. See Key Ceremony for more information.
# TODO: Allow real key ceremony
builder = ElectionBuilder(
number_of_guardians=
1, # since we will generate a single public-private keypair, we set this to 1
quorum=
1, # since we will generate a single public-private keypair, we set this to 1
description=election_description)
# We simply generate a random keypair. For a real election this step should
# be replaced by the key ceremony
keypair = elgamal_keypair_random()
builder.set_public_key(keypair.public_key)
# get an `InternalElectionDescription` and `CiphertextElectionContext`
# that are used for the remainder of the election.
(metadata, context) = builder.build()
# Configure an encryption device
# In the docs the encrypter device gets defined when encrypting a ballot.
# I think for our usecase it makes more sense to define one encrypter and use for the whole election
device = EncryptionDevice("polling-place-one")
encrypter = EncryptionMediator(metadata, context, device)
store = BallotStore()
ballot_box = BallotBox(metadata, context, store)
return metadata, context, encrypter, ballot_box, store, keypair
def _get_election_from_file(self, filename: str) -> ElectionDescription:
with open(os.path.join(data, filename), "r") as subject:
result = subject.read()
target = ElectionDescription.from_json(result)
return target