win2pdfd.exe sign "sourcepdf" "destpdf" "certfile" "certpassword"
Signs the PDF specified by "sourcepdf" and saves signed PDF to "destpdf" using the digital certificate file and password specified by "certfile" and "certpassword". The "certfile" must be a PKCS#12 certificate (.pfx or .p12 file) issued by a valid Certificate Authority (CA). Adobe Acrobat Reader only recognizes some Certificate Authorities and some Certificate Policies without displaying a warning, but it's possible to manually mark a certificate as "trusted" for other types of certificates.
This command is only available in licensed versions of Win2PDF Pro. Contact firstname.lastname@example.org for a time limited evaluation license.
If "sourcefile" and "destfile" are the same file, the file is modified in place.
Any file names that contain spaces must be enclosed with quotation marks.
Returns 0 on success, and a Windows system error code on failure.