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Use luksHeaderBackup rather than luksDump to measure luks headers.

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HardenedVault 2022-01-19 07:07:03 +02:00 committed by tlaurion
parent fba79ab448
commit b4b0bc4a7a
1 changed files with 7 additions and 3 deletions
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10
initrd/bin/qubes-measure-luks
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@ -6,9 +6,13 @@ die() { echo >&2 "$@"; exit 1; }
# Measure the luks headers into PCR 6
for dev in "$@"; do
cryptsetup luksDump $dev \
|| die "$dev: Unable to measure"
done > /tmp/luksDump.txt
cryptsetup luksHeaderBackup $dev \
--header-backup-file /tmp/lukshdr-$(echo "$dev" | sed 's/\//_/g') \
|| die "$dev: Unable to read luks header"
done
sha256sum /tmp/lukshdr-* > /tmp/luksDump.txt || die "Unable to hash luks headers"
rm /tmp/lukshdr-*
tpm extend -ix 6 -if /tmp/luksDump.txt \
|| die "Unable to extend PCR"