mtls.dev

The problem.

Generating TLS certs for testing is difficult. Most guides have incomprehensible commands that require security knowledge to operate.

The solution.

Cloudflare open-sourced their well-trusted Golang TLS library, cloudflare/cfssl. It has sane defaults and is constantly updated with best practices. We've compiled it to WebAssembly to generate certs in your browser.

Try it out.

Server hosts:

Advanced

CA common name:

Server common name:

Server cert validity duration:

Client common name:

Client cert validity duration:

Code samples.

Here are some examples of doing mTLS in various languages.

Server:

Client:

Contributing.

Want to add something? Find a bug? This project is open-source, please send PRs to github.com/jchorl/tlscerts. Feel free to also get in touch at [email protected].