LXD supports creating virtual TPM (Trusted Platform Module) devices which can be used by both containers and virtual machines. The most common use for those these days is to enable the installation of Windows 11 but they can also be used to help with boot security, full disk encryption or to hold certificates.
RESOURCES:
TPM devices: https://documentation.ubuntu.com/lxd/...
Github: https://github.com/canonical/lxd
Website: https://ubuntu.com/lxd
Community forum: https://discourse.ubuntu.com/c/lxd/