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#!/bin/bash
# Copyright 2018 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Script to increment UEFI Key Exchange Key (KEK).
# Load common constants and variables.
. "$(dirname "$0")/uefi_common.sh"
# Abort on errors.
set -e
if [ $# -lt 1 ]; then
cat <<EOF
Usage: $0 <keyset directory> [board name]
Increments the UEFI Key Exchange Key (KEK) in the specified keyset.
EOF
exit 1
fi
KEY_DIR="$1"
BOARD_NAME="$2" # Optional.
main() {
check_uefi_key_dir_name "${KEY_DIR}"
load_current_uefi_key_versions "${KEY_DIR}"
new_kek_key_ver=$(increment_uefi_version "${KEY_DIR}" "kek_key_version")
cd "${KEY_DIR}"
backup_existing_kek_keypair "${CURR_KEK_KEY_VER}"
cat <<EOF
Generating new UEFI Key Exchange Key (KEK) version.
New Key Exchange Key version: ${new_kek_key_ver}.
EOF
make_kek_keypair "${new_kek_key_ver}" "${BOARD_NAME}"
write_updated_uefi_version_file "${CURR_PK_KEY_VER}" "${new_kek_key_ver}" \
"${CURR_DB_KEY_VER}" "${CURR_DB_CHILD_KEY_VER}"
}
main "$@"
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