Marius,
I was looking through the TrouSerS-users mails and see that yours were
not answered. Were you able to fix the issue?
If not, I added some comments inline below that maybe will help you.
Em 28-08-2013 08:17, Marius Hansen escreveu:
Hi fellow TPM developers,
I currently work on a project implementing some functionality of the
TPM on a windows 7 plattform. Unfortunatly I did not come that far,
and was stoped by a fatal considering further progress.
What I have:
Windows 7
Trousers for Windows (provided by TORSEC)
TPM 1.2 with taken ownership
What I try to do:
Loading the basic handles as discribed in a variety of documentations
and papers.
[...]
TSS_UUID SRK_UUID = TSS_UUID_SRK;
[...]
// Get the SRK handle
result = Tspi_Context_LoadKeyByUUID(hContext,
TSS_PS_TYPE_SYSTEM,
SRK_UUID,
&hSRK);
DBG("Got the SRK handle", result);
[...]
The problem:
As discribed in the title I encounter the following error:
Error 0x2020 "Key not found in persistent storage"
Well, since a new SRK is created each time a user take ownership of a
TPM, did you follow the take ownership procedure?
Because this is the SRK handle, I unfortunatly fail to build anything
related to it ... which is pretty much everything :D
Can somebody help me plz :)
A subquestion of mine would be the following:
What exactly does SRK_UUID = TSS_UUID_SRK do? As I did not claim the
ownership with the
It's just to set the variable local SRK_UUID with the uuid data of the SRK.
provided TSS, but instead with the Windows 7 API I assume the problem
could be related to that.
Additionally I did not found what is the diference between
TSS_PS_TYPE_SYSTEM and TSS_PS_TYPE_USER.
This provides information on where the key to be loaded is:
TSS_PS_TYPE_SYSTEM points to the TCS persistent storage area, while the
TSS_PS_TYPE_USER points to the TSP one. The former, in TrouSerS case
means that the key is probably stored in the /var/lib/tpm/system.data
(the default file).
I thank you for all help provided,
Sincerely
Marius
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