heads/initrd/bin/tpm-reset
2017-04-12 06:45:15 -04:00

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#!/bin/sh
. /etc/functions
echo '*****'
echo '***** WARNING: This will erase all keys and secrets from the TPM'
echo '*****'
read -s -p "New TPM owner password: " key_password
echo
if [ -z "$key_password" ]; then
die "Empty owner password is not allowed"
fi
read -s -p "Repeat owner password: " key_password2
echo
if [ "$key_password" != "$key_password2" ]; then
die "Key passwords do not match"
fi
# Make sure the TPM is ready to be reset
tpm physicalpresence -s
tpm physicalenable
tpm physicalsetdeactivated -c
tpm forceclear
tpm physicalenable
tpm takeown -pwdo "$key_password"
# And now turn it all back on
tpm physicalpresence -s
tpm physicalenable
tpm physicalsetdeactivated -c