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#!/bin/bash
# Copyright 2017 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 "$0")/../common.sh"
: "${HAS_ARG_KEYNAME:=}"
usage() {
if [[ -n "${HAS_ARG_KEYNAME}" ]]; then
cat <<EOF
Usage: ${PROG} <keyname> [options]
Arguments:
keyname: Name of the hammer device (e.g. Staff, Wand).
Options:
-o, --output_dir <dir>: Where to write the keys (default is cwd)
EOF
else
cat <<EOF
Usage: ${PROG} [options]
Options:
-o, --output_dir <dir>: Where to write the keys (default is cwd)
EOF
fi
if [[ $# -ne 0 ]]; then
die "$*"
else
exit 0
fi
}
generate_rsa3072_exp3_key() {
local output_dir="$1"
local key_name="$2"
# Generate RSA key.
openssl genrsa -3 -out "${output_dir}/temp.pem" 3072
# Create a keypair from an RSA .pem file generated above.
futility create "${output_dir}/temp.pem" "${output_dir}/key_${key_name}"
# Best attempt to securely delete the temp.pem file.
shred --remove "${output_dir}/temp.pem"
}
# To generate a keypair with the same algorithm of Hammer and rename the kepair
# to specific accessory's name.
leverage_hammer_to_create_key() {
local output_dir="${PWD}"
local key_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: \"$1\""
;;
*)
if [[ -n "${key_name}" ]]; then
usage "Unknown argument \"$1\""
fi
key_name="$1"
;;
esac
shift
done
if [[ -z "${key_name}" ]]; then
usage "Missing key name"
fi
generate_rsa3072_exp3_key "${output_dir}" "${key_name}"
}
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