Certy provides a simple API for creating X509 certificates and certificate revocation lists on demand when running unit tests. No more storing test certificates and private keys in the repository!

Python-certy is a version of similar tool for command line and Golang called certyaml and java-certy for Java.

from certy import Credential

ca = Credential().subject("CN=ca")
ca.write_certificates_as_pem("ca.pem")

cred = Credential().subject("CN=server").issuer(ca)
cred.write_certificates_as_pem("cert.pem")
cred.write_private_key_as_pem("key.pem")

The latest documentation is available here. See also tests for more examples.

Install certy from PyPI:

pip install certy

Create virtual environment by running python3 -m venv .venv, then activate it source .venv/bin/activate. Install dependencies by running pip install -r dev-requirements.txt. Run tests with pytest. To build wheel, run flit build and check the generated wheel in dist directory. To find out coverage of tests, execute coverage run -m pytest and then coverage html. The coverage report is generated to htmlcov/index.html.

Run make html on docs directory to generate documentation. Open docs/_build/html/index.html to view the generated documentation.