Преобразовать PEM в CRT
openssl x509 -outform der -in your-cert.pem -out your-cert.crt
Torcho
openssl x509 -outform der -in your-cert.pem -out your-cert.crt
openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt -certfile CACert.crt