Hi all,
I'm currently working on a Linux project involving the use of the TPM. The
idea is to somehow reproduce the TPM part of TrustedGrub on UEFI, except
it's only to boot a fixed kernel. For various reasons it is done using
gnu-efi rather than EDKII. However, I think my question is generic enough
for this mailing-list.
So, my current idea is to create a small EFI application that will do the
needed processing, and then load the linux kernel through EFI Stub. I got
the "processing then stub" part right, everything works, except for the PCR
extending.
What I'm currently doing is loading the kernel.efi file contents into a
buffer using the Open and Read methods of the EFI_FILE_HANDLE handle. My
aim was then to send the content of this buffer as an input to the
EFI.TCG_PROTOCOL.HashALL() function, but I always end up with an empty
output buffer, even if I simply send a fixed integer instead of the file
contents as an input buffer.
Is there anyone here that has already used this protocol and can help me,
or even redirect me to a more appropriate source of information ?
Thanks in advance !
Regards,
Eric Viseur
Etudiant Ingénieur Civil Electricien
LinkedIn Profile<http://www.linkedin.com/profile/view?id=193442069&trk=tab_pro>
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