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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"
usage() {
cat <<EOF
Usage: ${PROG} DIR
DIR: To generate a keypair from an RSA 3072 key (.pem file) for Hammer at DIR
EOF
if [[ $# -ne 0 ]]; then
die "$*"
else
exit 0
fi
}
# Generate a keypair at the given directory.
generate_key() {
local dir=$1
# Generate RSA key.
openssl genrsa -3 -out "${dir}/temp.pem" 3072
# Create a keypair from an RSA .pem file generated above.
futility create "${dir}/temp.pem" "${dir}/key_hammer"
# Best attempt to securely delete the temp.pem file.
shred --remove "${dir}/temp.pem"
}
main() {
set -e
local dir
while [[ $# -gt 0 ]]; do
case $1 in
-h|--help)
usage
;;
-*)
usage "Unknown option: $1"
;;
*)
break
;;
esac
done
if [[ $# -ne 1 ]]; then
usage "Missing output directory"
fi
dir="$1"
generate_key "${dir}"
}
main "$@"
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