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#!/bin/bash
# Copyright 2022 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.
# Load common constants and functions.
. "$(dirname "$0")/../common.sh"
usage() {
cat <<EOF
Usage: ${PROG} [options] <key_file_base_name>
Options:
-o, --output_dir <dir>: Where to write the keys (default is cwd)
EOF
if [[ $# -ne 0 ]]; then
die "$*"
else
exit 0
fi
}
generate_rsa3070_key() {
local base_name="$1"
local len="3070"
echo "creating ${base_name} key pair..."
# Make the RSA key pair.
openssl genrsa -F4 -out "${base_name}.pem" "${len}"
openssl rsa -in "${base_name}.pem" -outform PEM \
-pubout -out "${base_name}.pem.pub"
}
main() {
set -euo pipefail
local base_name
local output_dir="${PWD}"
base_name=""
while [[ $# -gt 0 ]]; do
case "$1" in
-h|--help)
usage
;;
-o|--output_dir)
output_dir="$2"
if [[ ! -d "${output_dir}" ]]; then
die "output dir (${output_dir}) doesn't exist."
fi
shift
;;
-*)
usage "Unknown option: $1"
;;
*)
if [[ -z ${base_name} ]]; then
base_name="$1"
else
usage "Unknown argument $1"
fi
;;
esac
shift
done
if [[ -z ${base_name} ]]; then
usage "Key file base name missing"
fi
generate_rsa3070_key "${output_dir}/${base_name}"
}
main "$@"
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