genkey.sh

#!/bin/bash

COMMON_NAME=$1

if [ "${COMMON_NAME}x" = "x" ]; then
  echo "Usage: ./genkey.sh <dns>"
  exit 1
fi

SUB="
C=DE
ST=Berlin
O=Freifunk Berlin
localityName=Berlin
commonName=${COMMON_NAME}
organizationalUnitName=Freifunk Berlin
[email protected]
"

openssl req -new \
  -newkey rsa:4096 -keyout "private/${COMMON_NAME}.key" \
  -sha256 \
  -nodes \
  -out "csrs/${COMMON_NAME}.csr"  \
  -batch -subj "$(echo -n "$SUB" | tr "\n" "/")"

openssl asn1parse -in "csrs/${COMMON_NAME}.csr"