Re: [Trustedjava-support] how to control log

[Martin P. <Mar...@ia...>]

pat...@in... wrote:
> when i do
> TcTssPcrEvent event=tpm.getEvent(pcrIndex, 0);
> TcBlobData pcrValue=event.getPcrValue();
> 
> what is extactly the pcrValue?

If in doubt, ask the spec (TSS spec, chapter 2.6.2, TSS_PCR_EVENT):

"...containing the value extended into the TPM by Tspi_TPM_PcrExtend.
 This SHALL be the result of the calculation of
 SHA-1(ulPcrIndex || pbPcrData || eventType || rgbEvent), where[...]"


If still in doubt, ask the code:
See method pcrExtend in jtss_tsp/src/iaik/tc/tss/impl/java/tsp/TcTpm.java


HTH

-- 
Martin Pirker
IAIK, TU Graz