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Unlock secure PDF Documents?!..

L

LERsince1991

macrumors 65816
Original poster
Jul 24, 2008
1,245
37
UK
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
 
lol, nope... AQA have the passwords ^^

It would just make it easier to revise some stuff if I had sticky notes in places
 
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
pawprint.gif
 
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 :)
 
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.
 
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.
 
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.
 
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.
 
Infinitygraphix said:
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.
Click to expand...

cheers this worked for me, i can now highlight a re-saved version in Preview
 
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.
 
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.:)
 
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?
 
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).
 
QuarterSwede said:
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).
Click to expand...


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!
 
DesignerOnMac said:
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!
Click to expand...
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.
 
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.
 
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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