I would like to encrypt a PDF document

Hello,
     A problem came across my mind and I would to know if there is any solution. First of all I would like to know if there is any posibility for making a document mainly a pdf file unshareable, I don't point at copying the text from the document, I mean by the file itself, like no one could ever take the file without any permision or a password, an example it would be: if I would send a file to someone, I want that person to be unable to send it to someone else or to even mail it, I want to let him just execute and read the stuff.
     If there is any posibility in making a file encrypted so it won't share anymore, I would like to hear a solution.
Thanks,
     Sany.

There's a fundamental difference between opening a file and copying it. You can prevent unathorized people from opening a PDF by applying DRM, but absolutely nothing can stop them from emailing/copying/moving it.

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I am sending the Sample Files
blank.pdf file is a original file
http://www.2shared.com/file/4677649/3f341d92/blank.html
step 1: I am adding Signing object(without data in Contents<> key) in
blank.pdf file.
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http://www.2shared.com/file/4677648/48332d04/Prepared-blank.html
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http://www.2shared.com/file/4677647/d88c3095/SignednEncrypted-blank.html
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From: Adobe Forums <[email protected]<mailto:[email protected]>>
Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>>
Date: Sat, 28 Jan 2012 11:00:47 -0800
To: Leonard Rosenthol <[email protected]<mailto:[email protected]>>
Subject: Can I add Action button on each page of my pdf document
Can I add Action button on each page of my pdf document
created by gw70115<http://forums.adobe.com/people/gw70115> in Acrobat SDK - View the full discussion<http://forums.adobe.com/message/4171109#4171109

I would like to encrypt a PDF document

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