PDF signature certificate authentication document service (CDS) solution can protect the authenticity, integrity and validity of PDF documents. PDF documents published through the Internet can be signed or confirmed by using the PDF document signing certificate, and the signed documents can confirm the real identity of the signer of the PDF document to users. The true identity of the signer is verified and confirmed by an authoritative third party. At the same time, it also protects the PDF document from illegal tampering during transmission, so that the signed PDF document can be safely and reliably used for electronic document exchange and electronic contract signing between enterprises.
There are many kinds of PDF encryption, such as password encryption, certificate encryption, server authorization encryption and third-party software encryption.
PDF Certificate Company introduces you to one: GlobalSign China.