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Rework TPM measurements

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Rework TPM measurements to use fewer PCRs. After discussion with upstream,
it's preferable to avoid using so many PCRs. Instead, measure into PCRs 8
and 9 but use a prefix in the event log to indicate which subsystem carried
out the measurements.
This commit is contained in:
Matthew Garrett 2016-03-23 17:03:43 -07:00
parent c2eee36ec0
commit bb3473d7c8
12 changed files with 24 additions and 21 deletions
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2
grub-core/loader/multiboot_mbi2.c
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@ -127,7 +127,7 @@ grub_multiboot_load (grub_file_t file, const char *filename)
COMPILE_TIME_ASSERT (MULTIBOOT_HEADER_ALIGN % 4 == 0);
grub_tpm_measure ((unsigned char *)buffer, len, GRUB_KERNEL_PCR, filename);
grub_tpm_measure ((unsigned char *)buffer, len, GRUB_BINARY_PCR, "grub_multiboot", filename);
header = find_header (buffer, len);