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I have several eBooks which I purchased online and would like to add them to my bookshelf created in Adobe Digital Editions. However, digital editions does not support password protected files yet. So I was thinking of removing the password protection from the said files. As far as I know, there are two passwords for PDF files, user password (for opening file) and owner password (managing permissions). Would it be possible to create a copy of the PDF (with table of contents intact) which does not prompt for a password without knowing the owner password? If my memory serves me right, I think I tried this with iText for Java before without much success. Any other suggestions? Note: I have the user password and I can open the PDF with no problems at all. I'm just hoping to improve the reading experience by removing the password prompts every time I would have to open the file. :) And one more thing, creating my own PDF reader/eBook organizer is currently not an option. ;) |
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Now this looks interesting! A PDF Password Remover online tool built with iText running on Google App Engine. It says only the user password is required. I'll give this a try and let you know how it goes. 1
It worked! Developer said he's using a modified version of an older iText release. Limitation of online tool is 10MB. Limitation of offline tool is Windows only. Time to accept your own answer! :) |
I just saw this from iText FAQ: From iText version 2.0.3 and iTextSharp 4.0.4 the password restrictions are enforced by the library instead of passing that responsibility to the developer. Using PdfStamper or importing pages in PdfStamper, PdfCopy and PdfWriter will throw an exception if the PDF was not opened with the owner password.
This is probably the reason why my iText experiments failed before.