Re: [TrouSerS-users] 'software extend' and 'tpm_extend' result mismatch]

[Kent Y. <shp...@gm...>]

Hi Felix,

> this was indeed my mistake. I thought those length parameters were just
> for future flexibility and i need to pass a 20 Byte fielt to
> Tspi_TPM_PcrExtend. I get identical values now  :-)
>
> Where exactly ist the data hashed? In the TSS? Or inside the TPM?

  I'm talking to the TSS working group now to get a solid answer on
who should be hashing the data passed to Tspi_TPM_PcrExtend.  Right
now it looks like hashing the data as trousers does (in the TSP
library) is not correct.  I'm still not clear yet on whether the event
structure should be touched by the TSS though.  I will post to the
list as soon as I find out though.

Kent

--
Kent Yoder
IBM LTC Security Dev.