LetsTrust

Welcome back!

A few weeks ago Mr. M.P. write me an email with the question: May it possible to drive two TPMs on one Pi (4)?

Mr. M., want to drive one native TPM for the Pi and a second TPM as a remote vTPM for a client application.

So i've tested the Hardware Setting for Mr. M., after a few Minutes and combine this two posts:
1) https://letstrust.de/archives/23-Move-LetsTrust-TPMs-to-CS0.html
2) https://letstrust.de/archives/20-Mainline.html

Here the results:

Electrical- and mechanical-setting:


Hardware configuration of the two TPMs:

and you'll need 2 TPMs, with one 0Ohm Resistor on position CS0. [1]


Linux log



I hope this will be helpful for you, too.


Bye for now!

Paul


[1]
References:
https://letstrust.de/archives/24-Hardware-update!.html
https://letstrust.de/uploads/letstrust-v2.2.placement.cs0.pdf
https://letstrust.de/uploads/letstrust-v2.2.placement.cs1.pdf

Hello and welcome back!

Today I'll introduce you to a new TPM project.

Pierre Fontaine combines a Raspberry Pi, Yocto and a TPM.
He invested a lot of time on his project and I'll appreciate his work with a blogpost here, here is a qoute from his website:

The Raspberry, Yocto Project and The TPM!

Overview
In the cybersecurity field we need to play with crypto primitives. It allows us to authenticate for services (ssh, vpn ...), encrypt files for confidentiality, sign mail for proving your identity to the recipient, and even securing the boot of a complex device ...

So you do need to store keys and use crypto algorithms such as RSA, ECDH, AES compliant with some criteria (industry, military, medical ...).

[1]

Thank you Pierre to share you knowledge!

Here is the Link:
Raspberry Pi, Yocto and a TPM


By for now!

Paul



[1] © Copyright 2019. Jerome Blanchard, Romain Brenaget and Pierre Fontaine