Request a letsencrypt cert for multiple domain and related subdomain and encrypt the relative key

make_le_cert.sh

#!/bin/bash

# Request a letsencrypt cert for multiple domain and related subdomain, for example
# foo.domain.com, foo.domain.com
# bar.domain.net, bar.domain.net
# and encrypt the generated private key for security purposes.

# The MIT License (MIT)
# Copyright (c) 2016, 2017 Juma7C9
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software
# and associated documentation files (the "Software"), to deal in the Software without restriction,
# including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copiesor substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
# FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#!/bin/bash

dry_run="no"
if [ "${dry_run}" == "yes" ]
then
        e="echo Executing ==>"
fi

le_path="/root/src/letsencrypt"
le="${e} ${le_path}/letsencrypt-auto"

openssl="${e} openssl"
apache="apachectl"

certpath="/etc/letsencrypt/live/mysite.example"

opts="certonly --rsa-key-size 4096 -a apache --force-renewal"

domains=$(echo {,www.,subdomain1.,subdomain2.,subN.}{mysite,mysite2}.example | sed 's/ /,/g')

# Request certs
echo "Requesting certs"

${le} ${opts} -d "${domains}"


# Encrypt last key
echo "Encrypting key"

lastkey="$(realpath "${certpath}/privkey.pem")"
${openssl} rsa -des3 -in "${lastkey}" -out "${lastkey}.tmp"

# If encryption successfull, copy the new key back
if [ $? -eq 0 ]
then
        mv "${lastkey}.tmp" "${lastkey}"
else
        echo "[ERROR] Failed to encrypt private key!"
fi

# Restart Apache server
echo "Restarting Apache"

${apache} restart