[' Copy your PKCS7.p7b file as PKCS7.crt.', ' Open this file with your editor and add these lines. —–BEGIN CERTIFICATE—– ... ', ' openssl pkcs7 -print_certs -in PKCS7.crt -out certificate.cer.', ' openssl pkcs12 -export -in certificate.cer -inkey private.key -out PKCS7.pfx -certfile bundle.cer.']