Is it possible to pass the AUTH value generated from owner password to TPM
tools? If so how? When I say AUTH value, I mean the encrypted password Windows
stores in the registry that can be retrieved from
HKLM\System\CurrentControlSet\Services\TPM\WMI\Admin.
Separately but related, on domain-joined machines, in the same registry hive
some sort of AUTH value is stored (which look different from non-domain joined
machines) and it appears to me the value that gets stored is decided by certain
domain group policies. Anyone know how to interpret the values so I can use the
values instead of bothering the user for password? For those that are spooked
by this approach - as many of you know once you activate and reboot Windows
(for physical presence), upon reboot Windows 8.1 takes ownership of TPM and
sets a random password and claims "TPM is ready to use". However the "first"
user attempt to set TPM owner password does not require you to enter the
auto-generated password set by Windows when it took ownership. So I am thinking
there is a way to do it.
Sorry if the second question off-topic, there is hardly anyone who know
anything about TPM outside the trousers (and jTSS) user group.
Thanks
Raja
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