Key attestation, in this context, is the technical ability to prove to a remote party that a private key was generated inside, and is managed inside, and not exportable from, a hardware cryptographic module.
This is the source code repository that can be use to contribute changes, the current version is published at https://pkic.org/remote-key-attestation, but you can also view the list here on GitHub.
We encourage everyone (including non-members) to make contributions, all contributions are subject to our Intellectual Property Rights Agreement.