#!bin/bash
set -e

CRYPTFS=/dev/nvme0n1p3

echo "creating secret key"
dd if=/dev/random of=/root/secret.bin bs=32 count=1
cryptsetup luksAddKey $CRYPTFS /root/secret.bin

echo "Creating TPM Policy with current available PCRs"
tpm2_clear
tpm2_createpolicy --policy-pcr -l sha256:0,1,4,5,7 -L /root/policy.digest
tpm2_createprimary -C e -g sha256 -G ecc256 -c /root/primary.context
tpm2_create -g sha256 -u /root/obj.pub -r /root/obj.priv -C /root/primary.context -L /root/policy.digest -a "noda|adminwithpolicy|fixedparent|fixedtpm" -i /root/secret.bin
tpm2_load -C /root/primary.context -u /root/obj.pub -r /root/obj.priv -c /root/load.context
tpm2_evictcontrol -C o -c /root/load.context 0x81000000
# tpm2_unseal -c 0x81000000 -p pcr:sha1:0,1,4,5,7 -o /root/test.bin 
rm -f /root/load.context /root/obj.priv /root/obj.pub /root/policy.digest /root/primary.context