looking for example of EAT with PCR quote about eat

[henkbirkholz]

Hi Dimi,
with respect to running code, at the moment we decompose TPM structures in https://github.com/Fraunhofer-SIT/charra

The corresponding CBOR items are currently composed according to the following CDDL spec:

https://ietf-rats.github.io/draft-birkholz-rats-reference-interaction-model/draft-birkholz-rats-reference-interaction-model.html#section-appendix.a

The arrays used include label notation for the human reader. These can be used 1:1 as Claim definitions for EAT today (via a nested Claims Set) called tpm2-quote-request and tpm2-quote response, for example.

If there is demand for that, it would be relatively straight forward for us to add corresponding CDDL in the EAT style that to the I-D. Everything needed is already defined in that section.

[tomoveu]

Indeed @mcr . Thank you for rising this issue. Would be great to have an example how a TPM2 Quote fits with EAT or RATS in general. Open-source code that we can see and test.

[tomoveu]

Thank you, Henk!

Here is the recording of your explanation on the TPMdev call - https://developers.tpm.dev/posts/7112151 Made things very clear.

The link to the document(Appendix A) also helped a lot. What exactly do you think can go in Appendix B as a format regarding TPM2 Quote & EAT?

ps: I tried tagging you on the post in the forum, but it seems you do not have an account there or maybe you use a nickname and I could not recognize you

[laurencelundblade]

https://mailarchive.ietf.org/arch/msg/rats/q4yiqt7I6qkk49bwwrkul2u6mFg/