Setup command to generate X509 keys for Xero.

ca.conf

[ req ]
prompt = no
default_bits = 2048
default_keyfile = flatbook.co.key
encrypt_key = no
distinguished_name = req_distinguished_name

#string_mask = utf8only

#req_extensions = v3_req

[ req_distinguished_name ]
O=Flatbook Corp
L=Montreal
ST=Quebec
C=CA
CN=flatboook.co

[ v3_req ]

#basicConstraints = CA:FALSE
#keyUsage = nonRepudiation, digitalSignature, keyEncipherment
#Issuer: O=Internet Widgits Pty Ltd, L=Grand Rapids, ST=Michigan, C=US, CN=www.example.com

command

openssl genrsa -out privatekey.pem 1024
openssl req -newkey rsa:1024 -x509 -key privatekey.pem -out publickey.cer -days 365 -config ca.conf
openssl pkcs12 -export -out public_privatekey.pfx -inkey privatekey.pem -in publickey.cer

openssl x509 -in publickey.cer -text