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22 lines
597 B
Bash
Executable File
22 lines
597 B
Bash
Executable File
#!/bin/bash
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# Measure all of the luks disk encryption headers into
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# a PCR so that we can detect disk swap attacks.
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. /etc/functions
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TRACE "Under /bin/qubes-measure-luks"
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die() { echo >&2 "$@"; exit 1; }
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# Measure the luks headers into PCR 6
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for dev in "$@"; do
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cryptsetup luksHeaderBackup $dev \
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--header-backup-file /tmp/lukshdr-$(echo "$dev" | sed 's/\//_/g') \
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|| die "$dev: Unable to read luks header"
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done
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sha256sum /tmp/lukshdr-* > /tmp/luksDump.txt || die "Unable to hash luks headers"
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rm /tmp/lukshdr-*
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tpmr extend -ix 6 -if /tmp/luksDump.txt \
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|| die "Unable to extend PCR"
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