witam, w PDF Password recovery PRO 2.12 w zakladce zaawansowane jest taka opcja jak
"szukaj i dowolne haslo; uzytkownika i haslo wlasciciela. Sprobuj zaznaczyc opcje Haslo wlasciciela moze pomoze.
Pozdro
P.S Nie dalem screena bo jakiego formatu nie uzylbym to gdy chce zrobic upload jakiegs pliku np. png, jpeg to wyskakuje mi ze mam niedozwolony format
i lipa
-----EDIT-----
Po zajzeniu do pomocy tego programu zobaczylem cus ciekawego:
"Adobe Acrobat features two levels of password protection.
Protecting document with access restriction (***8220;owner***8221;, also called ***8220;securyty***8221; or ***8220;master***8221;) password does not affect a user's ability to open and view the PDF file, but prevents user from editing (changing) the file, printing it, selecting text and graphics (and copying them into the Clipboard), adding/changing annotations and form fields etc (in any combination). If the file is protected this way, you open it in Adobe Acrobat Reader (again, the password is not required for that) and select File | Document Security menu item, the following information is shown (for example):
In Adobe Acrobat Reader 4.x or older:
In Adobe Acrobat Reader 5.x:
Fortunately, there is no need to recover that password at all: instead, we can remove it (decrypt the file), so the resulting document will not have any restrictions. That***8217;s exactly what APDFPRP does. However, such decryption possible only if ***8220;user***8221; password (see below) is not set or known.
Also, there are ***8220;open***8221; (so-called ***8220;user***8221;) passwords. If one is set, the file is encrypted with strong RC4 algorithm, and cannot be opened at all, if the password or encryption key is not known. APDFPRP can recover (try to recover) this password, too, but time-consuming dictionary and brute-force attacks are required. In addition, APDFPRP allows to run this attacks to recover ***8220;owner***8221; password, because to decrypt the file, either ***8220;user***8221; or ***8220;owner***8221; password is needed. Even if both passwords are very long and complex, it is still possible to decrypt the file using Key search attack, which tries all possible 40-bit RC4 keys. It takes up to 30 days to complete (on a single PIII machine), but the success is guaranteed.
Note that when the file is being saved in Acrobat and the ***8220;user***8221; password is set, the ***8220;owner***8221; password is being set automatically to the same value (but can be changed manually, of course). That***8217;s because PDF file cannot have only ***8220;user***8221; password: in any case, it has either ***8220;owner***8221; password, or both ***8220;owner***8221; and ***8220;user***8221; passwords (which could be the same or different). Please take that in mind when selecting Advanced options.
Finally, PDF files can be protected using PDF Merchant and EBX digital rights management schemes or 3rd party plugins such as FileOpen, SoftLock etc. APDFPRP does not support such ones, i.e. cannot decrypt them at all.
Please note that Acrobat 5.0 can created PDF files with improved security level: 56..128-bit RC4 encryption (look at Complete new feature highlights document on Adobe server). For such files, ***8220;owner***8221; protection can be recovered instantly as for Adobe Acrobat 4.0 (and older versions), but brute-force and dictionary attacks are much slower; and ***8220;key search***8221; attack is not available at all.
When brute-force or dictionary atack starts, APDFPR provides additional information what kind of security handler is being used; log window will contain a record like:
05.04.2002 13:05:51 - File "C:My Documents\test.pdf" opened.
05.04.2002 13:06:14 - Handler: Acrobat Standard (Standard) 40-bit security v.1.
or
05.04.2002 13:05:51 - Handler: Acrobat Standard (Standard) 128-bit security v.2."