Python wrapper for labeled and unlabeled asynchronous private set intersection (APSI).
Example usage of the labeled APSI server and client. The unlabeled variant can be used analogous to this.
from apsi import LabeledServer, LabeledClient
apsi_params = """
{
"table_params": {
"hash_func_count": 3,
"table_size": 512,
"max_items_per_bin": 92
},
"item_params": {"felts_per_item": 8},
"query_params": {
"ps_low_degree": 0,
"query_powers": [1, 3, 4, 5, 8, 14, 20, 26, 32, 38, 41, 42, 43, 45, 46]
},
"seal_params": {
"plain_modulus": 40961,
"poly_modulus_degree": 4096,
"coeff_modulus_bits": [40, 32, 32]
}
}
"""
server = LabeledServer()
server.init_db(apsi_params, max_label_length=10)
server.add_items([("item", "1234567890"), ("abc", "123"), ("other", "my label")])
client = LabeledClient(apsi_params)
oprf_request = client.oprf_request(["item", "abc"])
oprf_response = server.handle_oprf_request(oprf_request)
query = client.build_query(oprf_response)
response = server.handle_query(query)
result = client.extract_result(response)
assert result == {"item": "1234567890", "abc": "123"}Given that Docker and docker-compose are available, the following will build PyAPSI and run tests.
docker-compose build
docker-compose run test
You can extract the wheel file as follows (adjust the version as needed):
docker run --rm --entrypoint cat pyapsi:dev \
/tmp/pyapsi/dist/apsi-0.1.0-cp39-cp39-linux_x86_64.whl > apsi-0.1.0-cp39-cp39-linux_x86_64.whl
Currently, only building under Linux is supported.
Make sure to install vcpkg and APSI as specified in the
APSI README.
Then set the environment variable VCPKG_INSTALLED_DIR to
/your/path/to/vcpkg/installed install poetry and run
poetry install
rm -rf build/
poetry run pip install --verbose .
You can then run the tests with
poetry run pytest tests/