decrypt pdf
hi.
i know this is a little out of this forum's topic, but i was wondering what program is best used to decrypt protected pdf files. i've been looking around for far too long for a free alternative but found none. can somebody gimme some pointers? |
Re: decrypt pdf
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some other encryption program? If so, try gnupg. It's available for download -> http://www.gnupg.org/(en)/download/mirrors.html for free, or course, and there is a very good README file that you can either read from that website, or from your comp once you unpack it. Website actually has many HOW-TO's. I am at this very moment just getting GnuPG setup on my Slack system to use with KMail, and also for the purpose of encrypting files that I have converted to .pdf format. So, maybe in a day or two I can be of more help, if someone more knowledgable doesn't come along in the meantime. |
sorry that my first post about decrypting pdfs wasn't that
clear and complete. I was actually in a hurry. anyhow, here's my situation: I have a pdf document that contains a master password. Since the master password was set by the original author, i can't copy or edit portions of the doc. Plus, it's impossible for me to look for the author and ask for the password. I've actually tried several Windows-based apps which are not free, to try to decrypt the doc but all those commercial apps only let me decrypt halfway thru the doc (which is incredibly annoying!) So, i was wonderin if there are any Linux apps that i can use to remove/decrypt the doc's master password. I've tried searching at sf.net and freshmeat.net, but nothing came up. anyone with an app in mind to do just that, do let me know. thanks. |
You could try some of the console tools such as pdf2ps, pdftops, pdftopbm, etc. I'm affraid I haven't got any protected pdf files so I can't test it out for you.
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i've tried using those utils that you suggested.
the problem is, the fonts of the resulting doc looks horrible. Speaking of font de-uglification, how do i do that? p/s -- does anybody know where i can read up on the internal structure of pdf docs? i am curious as to how the encryption system works. pp/s -- i am seriously irritated by this master password thingy. Commercial packages such as GuaPDF, Advanced PDF Password Recovery and the likes are really putting me off. that's why i am eager to know how the whole thing operates and hopefully to circumvent it. thanks a lot. |
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these forums, contact Adobe. They might not tell you how, but they should know. If you can provide some more details about it, maybe one of the guys here in my city might know how. They don't pay for software - here, they say copyright means "the right to copy," so they use copy CD's. Someone had to break a lot of stuff to get them usable. Don't know anything else to tell you. |
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£0.02 |
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http://en.wikipedia.org/wiki/Portable_Document_Format |
you guys have been helpful.
i guess calculus is FAR EASIER than looking into PDF's innards. i'm already fed up wrestling with this master password matter and i am thinking of stopping a while and sleep it off. great idea. going right now. |
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