Quick CSR to Certificate with fake CA

csr2crt.sh

#!/usr/bin/env bash

set -e

if [[ "$#" != "1" ]]; then
  echo usage: $0 /path/to/file.csr
  exit 1
fi

invoke_dir=$(pwd)
path_to_csr=$1

ca_tempdir=$(mktemp -d -t csr2crt)
cd $ca_tempdir

openssl genrsa 2048 > ca.key
openssl req \
  -x509 \
  -new \
  -nodes \
  -key ca.key \
  -days 3650 \
  -subj '/C=US/ST=Pennsylvania/L=Philadelphia/O=WebLinc/CN=www.weblinc.com' \
  -out ca.crt 

openssl x509 \
  -req \
  -in ${invoke_dir}/${path_to_csr} \
  -CA ca.crt \
  -CAkey ca.key \
  -CAcreateserial \
  -out ${invoke_dir}/site.crt \
  -days 365

echo 'Wrote certificate to site.crt!'

rm -r $ca_tempdir