I'm trying to create a PDF using a certificate signed COMODO Globaltrust the signature is placed correctly, the only problem is that when I open the file with a pdf reader on another pc I get written that the pdf does not have a trusted signature.
can someone kindly explain to me why it is not accepted as reliable?
yet the certificate comes from a trusted CA.
thanks in advance,bye
Does anyone have idea where to obtain free S/MIME certificate for personal use and TRUSTED by Adobe Reader to digitally sign documents with own digital signature ? (Comodo GlobalTrust certificates aren't trusted automatically !!!)