APDFL: Security and Permissions

For this API: PDDocSetNewCryptHandler(document, ASAtomFromString("Standard")); The API Reference says: newCryptHandler - The ASAtom for the name of the new security handler to use for the document. This name must be the same as the pdfName used when... Read More

The standard security provided in a PDF document consists of two different methods, each with its own type of password.  The User password controls the ability to open the document. This password encrypts the file and prevents someone without the... Read More

In order to change permission on a document, you must have a password that permits you to change permissions, and you must open the document with that password. Call PDDocGetPermissions() to see if you have the authority to change permissions for a... Read More

Datalogics offers sample programs to demonstrate how to block out, or redact, text found in a PDF document. These samples can be found in the /Security folder. C++ Samples: AddRedaction AddRegexRedaction .NET, .NET Framework and Java Samples: ... Read More

You might want to add content to the metadata of a PDF document that remains hidden from most viewers, and is only available to a client who knows to look for that content. This would not necessarily need to be encrypted; you simply want to add... Read More