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#!/usr/bin/env bash
# SPDX-License-Identifier: BSD-3-Clause
set -eufx
# create EK
tpm2_createek -G ecc -c ek_rsa.ctx
# create AK with defined scheme/hash
tpm2_createak -C ek_rsa.ctx -G ecc -g sha256 -s ecdsa -p abc -c ak_rsa.ctx
# load the AK to persistent handle
HANDLE=$(tpm2_evictcontrol -c ak_rsa.ctx | cut -d ' ' -f 2 | head -n 1)
cat > testcert.conf << EOF
[ req ]
default_bits = 2048
encrypt_key = no
prompt = no
distinguished_name = req_dn
[ req_dn ]
countryName = GB
commonName = Common Name
EOF
# create a private key and then generate a certificate request from it
openssl req -provider tpm2 -provider default -propquery '?provider=tpm2' \
-new -config testcert.conf -key handle:${HANDLE}?pass \
-passin pass:abc -out testcsr.pem
# display private key info
openssl pkey -provider tpm2 -in handle:${HANDLE} -text -noout
# display content of the created request
openssl req -text -noout -verify -in testcsr.pem
# release persistent handle
tpm2_evictcontrol -c ${HANDLE}
rm ek_rsa.ctx ak_rsa.ctx testcert.conf testcsr.pem
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