Trusted Platform Module 2.0 (TPM)

Trusted Platform Module (TPM, also known as ISO/IEC 11889) is an international standard for a secure cryptoprocessor, a dedicated microcontroller designed to secure hardware through integrated cryptographic keys. The term can also refer to a chip conforming to the standard.

Add TPM module to virtual machine

Easy way to add TPM to virtual machine is to use Libvirt with Virt-manager

Create Virtual Machine

After starting virt-manager create new virtual machine

Verify and edit hardware module list

On the hardware configuration screen, verify list of modules and click Add Hardware button

Add TPM module to VM

From the list of emulated devices choose TPM module and add it to VM

Finish VM configuration

On the last screen verify once again if TPM module was added properly

Add TPM emulation to bare metal machine

During applying #!yaml MachineRegistration add following key to the yaml config:elemental:registration:emulate-tpm: true

If you plan to deploy more than 1 machine with TPM emulation, make sure to set config:elemental:registration:emulated-tpm-seed: -1 so the seed used for the TPM emulation is randomized per machine. Otherwise, you will get the same TPM Hash for all deployed machines and only the last one to be registered will be valid.

registration-tpm.yaml

apiVersion: elemental.cattle.io/v1beta1
kind: MachineRegistration
metadata:
  name: fire-nodes-emulate-tpm
  namespace: fleet-default
spec:
  config:
    cloud-config:
      users:
        - name: root
          passwd: root
    elemental:
      install:
        reboot: true
        device: /dev/sda
        debug: true
      registration:
        emulate-tpm: true
  machineInventoryLabels:
    element: fire
    manufacturer: "${System Information/Manufacturer}"
    productName: "${System Information/Product Name}"
    serialNumber: "${System Information/Serial Number}"
    machineUUID: "${System Information/UUID}"