Re: [tboot-devel] Additional Questions

[Cihula, J. <jos...@in...>]

On Tuesday, December 04, 2007 7:45 PM, Atsushi SAKAI wrote:
> Hi, Joe
>=20
>   Thank you for various answers.
> I still have several questions.
> I would be appreciate if you answer the question.
>=20
> 1)Is SHA256 planned to use?
>   (since definition exists in code)

It is possible that we will support SHA-256 in the future, and since the
hash size is larger, we wanted to make sure that we would not have to
change the data layout if we did.

> Following questions are from Intel TXT Spec(Aug 2007)
>=20
> 2)What is GV3 MSRs?(p.69)

These are the Intel(R) SpeedStep MSRs that govern frequency/voltage
settings.

> 3)In Intel TXT Specification(August 2007)
>   Appendix D.1.3 - D.1.5
>   seems old(since same Data Struct is written in
>    Appendix C)

The contents of the data structures are different.  Appendix D is for
the TEP only and so these are legacy data structure versions.

> 4)In Intel TXT Specification(August 2007)
>   p.59 (see Appendix "0")
>   should be Appendix "C"

Good catch--we'll fix it in the next rev.

>> From Intel 64 and IA-32 Software Developers Manual.
> 5) Where is the following manual?
> Trusted Execution Technology Measured Launched Environment Programming

That is the title for the next revision of the TXT Preliminary
Architecture Specification.  We should have it available early next
year.

>=20
> Thanks
> Atsushi SAKAI
>=20
>=20
>=20
>=20
>
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