Does PDFIUM support encrypting.decrypting of a PDF document?

[darkdes...@gmail.com]

I'm not talking about simple password level locking, but the ability to create an encrypted document using a key and then opent/decrypt that ducument assuming that the appropriate keys are provided? I don't see anything in the API that is  obvious and the FoxIt documentation is totally lacking in this regard (even around password locking AFAICT).

[Andrey Khalyavin]

I have seen crypto code (key generation in particular) in the source: core/src/fpdfapi/fpdf_parser/fpdf_parse_encrypt.cpp.

-- Andrey Khalyavin

[darkdes...@gmail.com]

Yeah, it took a while but I think I figured out what needs to be done. I need to provide an instance of my own subclass of CPDF_SecurityHandler and possibly an instance of CPDF_CryptoHandler. Not so sure about that last since we use AES as well and the CPDF_StandardCryptoHandler already looks like a good generic AES encryption.

I think I just need to set my CPDF_SecurityHandler instance on the document parser before loading the document and everything should “just work”. The only issue I see is that there is no way to set the security handler to the document after the fact so I am not sure how to encrypt an unencrypted document just yet.

I've seen people on the list with a FoxIt email alias and if I could get any independent confirmation from one of them that this is the correct path that would be awesome.

Thanks,

Joe