https://github.com/01org/tpm2.0-tools http://trousers.sourceforge.net
You can also emulate a TPM in recent versions of QEMU...
https://tpm2-software.github.io/2020/10/19/TPM2-Device-Emula...
I wrote a couple of scripts meant to help me lock down a machine for colocation in this "BitLocker" type manner. And, as luck would have it, lol... I'll (again) shamelessly self-promote the Show HN I wrote just a short while ago:
A huge number of people and organizations run Unix based systems and TPM devices have been around for a pretty long time (at least by tech standards).
Might the world be a bigger place than you think?
The point was projects like OpenBSD often don't have support for more recent hardware, and given OpenBSD is used much more as a router than a server, it's a very reasonable presupposition.
>there any support in OpenBSD, or indeed any Unix-based desktop/server operating system
That's a wide swath and TPM 1.2 was finalized in 2011, saying "of course" was perfectly fair. It's one thing to say that such a device, perhaps a specific revision from a specific manufacturer, might not be supported on a specific release of an even more specific distribution... but that wasn't the case.
Trolling and quibbling over a common colloquialism such as using the phrase "of course" is not constructive.
I'll just say this. Saying 'of course' that an obscure OSS OS (and yes, OBSD IS obscure, and anyone not being emotional should be able to admit that) having full hardware support is silly, when so many similar OS projects still don't have support for much hardware.
Besides, TPM is at version 2 now which was announced in 2014, so where is the OBSD support for TPM 2.0? Why does it not support it?
Saying 'of course' it supports it was indeed silly when it doesn't support the more recent spec which is still 9 years old and isn't backwards compatible...
And here I thought I was merely stating that there is some Unix variant somewhere on this planet that supports a TPM, any TPM. I'm a boob; sincere apologies. You've made the world a much better place!