Planet PDF Forum Archive

Planet PDF ForumWowsers! This is page is old, head to the LIVE Planet PDF Forum. It features more than 10 conferences, covering everything from beginner to in-depth developer and pre-press discussions. If you wish to continue... one & two archive covers 1999-2011 (160,000 pages).

New Forum | Previous | Next | (P-PDF) Developers

Topic: Passwords
Conf: (P-PDF) Developers, Msg: 94258
From: Petomane
Date: 8/13/2003 07:22 PM

I develop and market a PDF generator tool which runs on an IBM iSeries. This presents some special challenges because the iSeries is an EBCDIC machine.

I am currently developing a version of my product which supports non-Latin alphabets (Greek, Cyrillic, also Chinese, Japanese, Korean). I have a question regarding PDF passwords.

I would like to make it possible for users to supply a password in their local language (Greek, Chinese etc.) when creating the PDF file using my tool. The password string they supply to my tool will be in EBCDIC. Normally I convert this to ASCII before including it in the PDF, but there are some extra complications when dealing with non-Latin alphabets.

Ideally therefore I would like to handle the password as a Unicode string. Is this possible? Can a PDF password be stored in the encryption dictionary as a Unicode string? When Acrobat checks the password that has been input by the user who is trying to open the file, will it convert the string to Unicode?

The PDF reference manual indicates that passwords should be a maximum of 32-bytes long. *If* the password can be in Unicode, does this mean that the password will be limited to 15 characters (i.e. 15 two-byte characters plus the 2-byte Unicode x'FEFF' marker at the front)?

Any help gratefully received by a currently rather confused developer?

PDF In-Depth Free Product Trials Ubiquitous PDF

Debenu Aerialist

The ultimate plug-in for Adobe Acrobat. Advanced splitting, merging, stamping, bookmarking, and link...

Download free demo

Debenu PDF Tools Pro

It's simple to use and will let you preview and edit PDF files, it's a Windows application that makes...

Download free demo

Five visions of a PDF Day

In the world of PDFs or as we like to say Planet (of) PDF, a year isn't a real PDF year without an intense few days of industry knowledge sharing.

May 15, 2018
Platinum Sponsor

Search Planet PDF
more searching options...
Planet PDF Newsletter
Most Popular Articles
Featured Product

Debenu PDF Aerialist

The ultimate plug-in for Adobe Acrobat. Advanced splitting, merging, stamping, bookmarking, and link control. Take Acrobat to the next level.


Adding a PDF Stamp Comment

OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.