A module which adds support for the TLS signed_certificate_timestamp extension to nginx, which is one of the mechanisms supported by Google’s Certificate Transparency project to deliver Signed Certificate Timestamps to TLS clients.

The associated ct-submit tool can be used to submit X.509 certificates to log servers and obtain Signed Certificate Timestamps in a format suitable for use with the module.

Source code

nginx-ct is open-source software available under the terms of the ISC license, which is similar to the 2-clause BSD license. The source code is hosted on GitHub. The README file contains instructions for building and configuring it.