This group contains samples that show how to protect your PDF documents with passwords or certificates. There are also samples for how to disallow specific operations with produced documents.
Don't miss all other samples.
Open PDF document encrypted with a certificate
This sample shows how to open PDF documents protected with certificates.
This sample shows how to set up user access permissions for a PDF document.
This sample shows how to protect your PDF document with a password using the AES 256-bit encryption algorithm.
Protect PDF document with a certificate
This sample shows how to protect your PDF document with one or more certificates using the AES 256-bit encryption algorithm.
This sample shows how to protect your PDF document with a password.