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tpm_sealdata
2009 Sep 07
0
[TPM, vTPM] Persistence of data on VM?
...t;Secret test" | tpm_sealdata -o 0209091104.blob -z
So here I''ve got a blob that contains
-----BEGIN TSS-----
-----TSS KEY-----
[...]
-----ENC KEY-----
[...]
-----ENC DAT-----
[...]
-----END TSS-----
Then I can unseal it, just to test that it has been done correctly:
lenny-guest# tpm_unsealdata -i 200909071534.blob
-----
Secret test
-----
So it seems that everything went ok.
So I reboot my VM, do the modprobe and tcsd start again, and then, I expect
my TPM to have kept the state I gave to it last time. But that doesn''t seem
to work. or else I am doing something wrong.
Is not...