Re: TPMs, measured boot and remote attestation in Fedora

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Kevin Kofler wrote:
> Matthew Garrett wrote:
> > Measured boot is a process whereby each component in the boot chain
> > "measures" the next component. In the TPM 1.x world (which is where
> > most of us still are), that measurement is in the form of a SHA1
> > hash of the next component. So, on a BIOS system, the firmware
> > measures itself, the firmware measures its configuration, the
> > firmware measures any option ROMs on plugin cards, the firmware
> > measures the MBR of the disk, the MBR measures the grub stage 1,
> > the grub stage 1 measures the grub stage 2, the grub stage 2
> > measures the kernel and so on.  
> 
> Yet another Treacherous Computing "feature" that nobody needs!

That depends entirely on who controls the keys. It's treacherous only
if the sysadmin doesn't have the secret key.

Björn Persson

Attachment: pgp23yDSMkrjx.pgp
Description: OpenPGP digital signatur

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