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All TPM Extend additional context passed from console echo output to DEBUG. Put back console output as of master. TODO: decide what we do with tpmr extend output for the future. Hint: forward sealing of next flashed firmware measurements.

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Signed-off-by: Thierry Laurion <insurgo@riseup.net>
This commit is contained in:
Thierry Laurion 2023-11-06 15:53:17 -05:00
parent fd6a947cb3
commit 388ee5198b
No known key found for this signature in database
GPG Key ID: E7B4A71658E36A93
6 changed files with 8 additions and 10 deletions
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2
initrd/bin/cbfs-init
View File

@ -24,7 +24,7 @@ for cbfsname in `echo $cbfsfiles`; do
TMPFILE=/tmp/cbfs.$$
echo "$filename" > $TMPFILE
cat $filename >> $TMPFILE
echo " !!!!! Extending TPM PCR $CONFIG_PCR with $filename !!!!!"
DEBUG "Extending TPM PCR $CONFIG_PCR with $filename"
tpmr extend -ix "$CONFIG_PCR" -if $TMPFILE \
|| die "$filename: tpm extend failed"
fi

2
initrd/bin/kexec-insert-key
View File

@ -49,7 +49,7 @@ if ! kexec-unseal-key "$INITRD_DIR/secret.key"; then
fi
# Override PCR 4 so that user can't read the key
echo " !!!!! Extending TPM PCR 4 to prevent further secret unsealing !!!!!"
DEBUG "Extending TPM PCR 4 to prevent further secret unsealing"
tpmr extend -ix 4 -ic generic ||
die 'Unable to scramble PCR'

2
initrd/bin/kexec-select-boot
View File

@ -381,7 +381,7 @@ while true; do
if [ "$CONFIG_TPM" = "y" ]; then
if [ ! -r "$TMP_KEY_DEVICES" ]; then
# Extend PCR4 as soon as possible
echo " !!!!! Extending TPM PCR 4 to prevent further secret unsealing !!!!!"
DEBUG "Extending TPM PCR 4 to prevent further secret unsealing"
tpmr extend -ix 4 -ic generic ||
die "Failed to extend PCR 4"
fi

2
initrd/bin/qubes-measure-luks
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@ -19,6 +19,6 @@ sha256sum /tmp/lukshdr-* >/tmp/luksDump.txt || die "Unable to hash LUKS headers"
DEBUG "Removing /tmp/lukshdr-*"
rm /tmp/lukshdr-*
echo " !!!! Extending PCR 6 with hash of LUKS headers from /tmp/luksDump.txt !!!!"
DEBUG "Extending TPM PCR 6 with hash of LUKS headers from /tmp/luksDump.txt"
tpmr extend -ix 6 -if /tmp/luksDump.txt ||
die "Unable to extend PCR"

2
initrd/etc/ash_functions
View File

@ -227,7 +227,7 @@ recovery() {
. /tmp/config
if [ "$CONFIG_TPM" = "y" ]; then
echo " !!!!! Extending TPM PCR 4 for recovery shell access !!!!!"
DEBUG "Extending TPM PCR 4 for recovery shell access"
tpmr extend -ix 4 -ic recovery
fi

8
initrd/sbin/insmod
View File

@ -30,18 +30,16 @@ if [ ! -r /sys/class/tpm/tpm0/pcrs -o ! -x /bin/tpm ]; then
fi
if [ -z "$tpm_missing" ]; then
echo
echo " !!!!! Extending TPM PCR $MODULE_PCR with $MODULE prior of usage !!!!!"
DEBUG "Extending TPM PCR $MODULE_PCR with $MODULE prior of usage"
tpmr extend -ix "$MODULE_PCR" -if "$MODULE" \
|| die "$MODULE: tpm extend failed"
fi
if [ ! -z "$*" -a -z "$tpm_missing" ]; then
DEBUG "Extending PCR $MODULE_PCR with $*"
DEBUG "Extending TPM PCR $MODULE_PCR with $*"
TMPFILE=/tmp/insmod.$$
echo "$@" > $TMPFILE
echo
echo " !!!!! Extending TPM PCR $MODULE_PCR with $MODULE prior of usage !!!!!"
DEBUG "Extending TPM PCR $MODULE_PCR with $MODULE prior of usage"
tpmr extend -ix "$MODULE_PCR" -if $TMPFILE \
|| die "$MODULE: tpm extend on arguments failed"
fi