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#!/bin/sh
# SPDX-License-Identifier: BSD-3-Clause
usage() {
cat <<EOF
Converts an Intel certificate from DER encoding to PEM encoding, writing the
result to stdout.
Usage: $0 [options] FILE
Options:
-h print this help text.
EOF
exit 0
}
while getopts ":h" opt; do
case $opt in
h)
usage
;;
\?)
echo "Invalid option: -$OPTARG" >&2
exit 1
;;
esac
done
if [ "$#" -ne 1 ]; then
(>&2 echo "Error: expected 1 certificate file parameter, got: $#")
exit 1
fi
sed 's/-/+/g;s/_/\//g;s/%3D/=/g;s/^{.*certificate":"//g;s/"}$//g;' $1 |
base64 --decode |
openssl x509 -inform DER -outform PEM
exit 0
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