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X509 Test Certificates

These crates exist to help your crate test TLS or HTTPS.

A lot of software doesn't test the tricky code paths like client certificate authentication. One reason is that it's just too hard to generate realistic certificates.

And why should you have to learn how to build realistic certificates? You're not running a CA. There should just be a crate that offers pre-built certificates with the properties you need.

use x509_test_certs::good_certs1 as certs;

let server_key = certs::SERVER_KEY_PEM;
let server_cert = certs::SERVER_CERT_PEM;

Pre-built test certificates can be found in the x509-test-certs crate. This crate has zero dependencies, and doesn't even contain any code! It only holds const byte arrays containing certificates and private keys.

Generating certificates

Code for generating certificates can be found in the x509-test-gen crate. There is limited flexibility right now, but this will improve in the future.

Future goals:

  • More custom options for certificates.
  • Elliptic curve keys and signatures.
  • rustls support.
  • Various flavors of "broken" certificates: expired, bad signatures, incorrect or missing extensions (non-CA signatures, bad path length, etc.)

Non-goals:

  • Building or supporting a custom certificate authority. Running a CA requires a great deal more care than this crate takes. Please don't use any of the keys or certificates from these crates in real public services.

License

The crates that contain code are released under the MIT license.

The x509-test-certs crate is released into the public domain. I don't think cryptographic keys or X509 certificates are copyrightable, but even if they are, you are allowed to do anything you want with them, including copying the certificate files into your own project.