Creates Self Signed Cert and PKCS12

create-self-signed-cert-and-pkcs12.bash

#!/usr/bin/env bash
set -euo pipefail

if [ $# -ne 3 ]
  then
    echo ""${0##*/}" CN OU FILE_NAME"
    exit
fi

# Certificate Attributes
# CN: CommonName
# OU: OrganizationalUnit
# O: Organization
# L: Locality
# S: StateOrProvinceName
# C: CountryName

CN=$1
OU=$2
FILE_NAME=$3

# https://stackoverflow.com/a/41366949
openssl req -x509 -newkey rsa:4096 -sha256 -days 3650 -nodes \
  -keyout $FILE_NAME.key -out $FILE_NAME.crt -subj "/CN=$CN/OU=$OU" \
  -addext "subjectAltName=DNS:$CN"

# https://stackoverflow.com/a/21144736
openssl pkcs12 -export -out $FILE_NAME.p12 -inkey $FILE_NAME.key -in $FILE_NAME.crt