Unlock secure PDF Documents?!..

Discussion in 'Design and Graphics' started by LERsince1991, May 28, 2009.

  1. macrumors 65816

    LERsince1991

    Joined:
    Jul 24, 2008
    Location:
    England
    #1
    Would anyone like to help me find a way to unlock some secure password protected pdf documents.. they are some maths past papers I need to do, all I want to do is add sticky notes to the questions.

    Possible to do in cs4/adobe acrobat pro?

    Luke.

    it says the encryption is 128-bit RC4
     
  2. macrumors 65816

    design-is

    Joined:
    Oct 17, 2007
    Location:
    London / U.K.
    #2
    I'm guessing you don't have the passwords?
     
  3. thread starter macrumors 65816

    LERsince1991

    Joined:
    Jul 24, 2008
    Location:
    England
    #3
    lol, nope... AQA have the passwords ^^

    It would just make it easier to revise some stuff if I had sticky notes in places
     
  4. macrumors P6

    MacDawg

    Joined:
    Mar 20, 2004
    Location:
    "Between the Hedges"
    #4
    You can try this

    People are hesitant to help because they are passworded for a reason
    Circumventing that password... well... you know

    But software like this is just a Google away

    Woof, Woof - Dawg [​IMG]
     
  5. thread starter macrumors 65816

    LERsince1991

    Joined:
    Jul 24, 2008
    Location:
    England
    #5
    that app worked but only does one page...

    I think I'll just spend this time writing on paper instead of the sticky notes idea ;)

    It's a bit of a shady area anyway

    Thanks anyway :)
     
  6. macrumors 65816

    design-is

    Joined:
    Oct 17, 2007
    Location:
    London / U.K.
    #6
    If you can place them into InDesign (depending on the security settings), you could make notes in there... But it kinda takes away the convenience factor.
     
  7. macrumors member

    Joined:
    Apr 14, 2008
    #7
    I don't have a protected PDF in hand, but here is what I found last time I had one...

    Open it in Preview... and try a « save as ».

    When a PDF is protected, you can't « copy » text form it.. However, from Preview, you CAN... so maybe « save as » from Preview would work.
     
  8. macrumors regular

    Joined:
    Dec 7, 2008
    #8
    You could try this

    A program called AEBPR (Advanced eBook Processor) may help. If you google AEBPR you will find it.

    I don't know whether it will handle that kind of encryption (I suspect not) but many PDFs it does handle - I use it for similar purposes myself if I want to annotate or edit PDFs.

    It's a Windows program, but it works perfectly under WINE and/or Crossover on OS X 10.5 in my experience. Once WINE or Crossover is installed, you simply run the installer, then run the application, which will launch in a demo mode. Then close it, and run Regedit (which WINE includes a version of) and follow the instructions in the archive on how to add the registration key to the registry. Running the program will have added the appropriate key, you just need to put the registration code in a STRING value. It's all in the instructions and takes a minute or so - much easier than it sounds.

    Hopefully I'm OK posting this (if not, please remove it - nothing inappropriate intended). It is essentially abandonware - it was released into the wild to get round an Adobe lawsuit against the programmer and also in the hope of getting donations for his defence, Dmitry Skylarov that was big news a few years back. Adobe lost, but the software is no longer for sale and is all over the place on the net quite openly - it's just 'fair use' stuff.

    Other than that, something like GuaPDF which is more modern and actually does password cracking rather than simply going round the pathetic security that PDF used to use, so should work on some newer encryption, but takes time. There are probably endless other options out there - google PDF Decryption Mac or something.


    The other thing you could do, is if the encryption settings allow for printing, you could just print them to a PDF creation program on a computer. I'm not sure what combination of viewer and creation you would need though - acrobat and acrobat reader won't do what you need, on Mac anyway, as far as I know. Preview.app might.

    There's another PDF annotation program called PDFXChange Viewer - again it's a windows program, but it has a portable version which is free and works with WINE and Crossover nicely. It may be more flexible in terms of what it will allow you to print, but I have no way to test it right now. Failing that, some linux viewers may ignore restrictions. Like someone said, Preview used to, but I don't *think* it does any more. I don't have a mac any more to test on, having given up on my macbook air after some hideous service from an Apple Store.

    Final possibility (only does one page at a time, but you can specify the page) - Inkscape is a free graphics program capable of editing PDFs. I have NO idea what happens with encrypted ones though, and it will depend not only on the encryption used but also the actual permissions they've set.
     
  9. macrumors 68000

    Joined:
    Aug 20, 2003
    Location:
    Long Beach, California
    #9
    As mentioned by hodgeheg, GuaPDF should help. They should have a free trial that may be exactly what you need.
     
  10. macrumors newbie

    Joined:
    Oct 13, 2007
    #10
    ColorSync utility is all you need (at least it worked for me with some locked pdfs), and you already have it on your mac. Open ColorSync, go to File Open, and open your pdf. Then go to File Export, choose PDF, and re-save it as a PDF with no password protection. It worked like a champ for me. Now I only tried this with single page pdfs, so I don't know how it will handle multiple pages.
     
  11. macrumors regular

    Joined:
    Mar 30, 2007
    Location:
    UK
    #11
    cheers this worked for me, i can now highlight a re-saved version in Preview
     
  12. macrumors newbie

    Joined:
    Apr 27, 2010
    #12
    There are good pdf tools that can do that on Windows computers but unfortunately, I can't think of the name of one at the moment. I wouldn't know what to use to do that on my Mac, but I think the "save as" method should work if you have Adobe Professional installed.
     
  13. macrumors newbie

    zhuismile88

    Joined:
    May 16, 2010
    #13
    unlock some secure password protected pdf documents

    PDF Password Recovery 5.0 ,it works well and easy to use.It helps to decrypt protected Adobe Acrobat PDF files.

    Hope it help you,you can google it for more imformation.:)
     
  14. macrumors newbie

    Joined:
    Jul 28, 2010
    #14
    Colorsync

    Colorsync won't allow me to export. It shows a lock in the upper corner. They must have figured that one out : P

    Any other tricks out there?
     
  15. macrumors newbie

    Joined:
    Jan 27, 2011
    #15
    PDF unlock

    Just go to this to this site http://www.pdfunlock.com/ then to the browse and put the file in and click on unlock and it works great good luck
     
  16. macrumors newbie

    Joined:
    Oct 10, 2007
    #16
    @Rogert
    Man thank you so much, that website works great.
     
  17. macrumors newbie

    Joined:
    Apr 1, 2011
    #17
    PDF unlock

    @Rogert
    awesome, easy to use site -- worked great. Thank You!
     
  18. macrumors newbie

    Joined:
    Jul 25, 2007
    Location:
    Hockeytown USA
    #18
    For a fee!

    pdfunlock.com wanted $3.99 per file to unlock.
    anything out there for free?
     
  19. macrumors G3

    QuarterSwede

    Joined:
    Oct 1, 2005
    Location:
    Colorado Springs, CO
    #19
    I'm looking for the same thing. I will mention that there is a difference between PDFs that are locked with a password and ones that are encrypted (you have to put a password in before it can be viewed).

    If the PDF is just locked then there are a ton of free tools to unlock them (it's just a lock flag in the file) some of which have been mentioned.

    If the PDF is encrypted AND you have the password then PDFKey Pro is the only solution I know of that actually works. It is shareware but it only does 1 page if you haven't purchased it.

    If anyone knows of a free solution for encrypted PDFs when the user has the password I'd love to know it.

    (For me, I have a church directory that is encrypted and I want to strip the password protection so I can view it on my iPhone without having to put a password in every time).
     
  20. macrumors 6502a

    Joined:
    Jul 23, 2007
    #20

    pdfkeypro works great but as mentioned will only do one page for the free version. If your needing to use password protected PDFs all the time spend the $24.99 for the full version. A small price to pay if you need this all the time.

    I had security password credit card statements which for some reason I could not print. None of the suggestions offered helped. The credit card company, of course, would not give me the password. WHen I purchased pdfkey pro, the credit card company credited my account....so a win win for me!
     
  21. macrumors 6502a

    Apple Key

    Joined:
    Jan 4, 2012
  22. macrumors G3

    QuarterSwede

    Joined:
    Oct 1, 2005
    Location:
    Colorado Springs, CO
    #22
    If I have the password (which I do) would I be able to unlock it and save it with the app it was created with (in this case Adobe Acrobat Pro)? Would Acrobat or Reader work?

    So far, I've only needed to unlock this particular PDF so spending $24.99 on it isn't worth it for me. As a workaround I've just appended the password to the end of the filename.
     
  23. macrumors newbie

    Joined:
    Jan 17, 2008
    #23
  24. macrumors newbie

    Joined:
    Feb 7, 2012
    #24
    Why not command line?

    use ghostscript, it's free and really easy to use:

    gs -sOutputFile=nopassworded.pdf -sDEVICE=pdfwrite -dNOPAUSE -dbatch -q passworded.pdf

    Where passworded.pdf is the file with the password and nopassworded.pdf is the new one with no password.
     
  25. macrumors regular

    blastair

    Joined:
    Mar 11, 2009
    #25
    Thanks to whoever suggested ColorSync. I simply opened the protected PDF in that app, then selected Print-->Save as PDF. Quick and easy, without having to download any additional software. Sweet!
     

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