Convert crt certificate to pfx format.

openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt -certfile more.crt

* openssl – the command for executing OpenSSL
* pkcs12 – the file utility for PKCS#12 files in OpenSSL
* -export -out certificate.pfx – export and save the PFX file as certificate.pfx
* -inkey privateKey.key – use the private key file privateKey.key as the private key to combine with the certificate.
* -in certificate.crt – use certificate.crt as the certificate the private key will be combined with.
* -certfile more.crt – This is optional, this is if you have any additional certificates you would like to include in the PFX file.