Brutal force PDF | Bitcointalksearch.org

Passcovery

newbie

Activity: 2

Merit: 0

Quote from: YesOrNo on February 07, 2015, 06:00:44 AM

Thanks
It takes a long days years too. Maybe there is some service or asic sha256 which can force it faster. Sad

How can it be otherwise? Protection must be reliable.

Tried schemes are used for protection now. A longer key, more hashing iterations and you will carry out searching till the next Big Bang. Yes, it is. It is impossible to find a synthetic password by direct searching if you don't know the structure of this certain password (to set the mask or change dictionaries). Unfortunately or luckily. It's just a matter of discretion.

arvindr

full member

Activity: 182

Merit: 100

I have tried a lot of times, but never found any way to actually do it.
Brute forcers take days, and do not guarantee results.

YesOrNo

full member

Activity: 143

Merit: 100

Quote from: Passcovery on February 07, 2015, 02:34:59 AM

Quote from: YesOrNo on February 06, 2015, 09:42:15 PM

Do somebody know some program where I can use my gpu's to force password to encrypted document ?

Try AccentPPR. The searching speed is high and there are various features to vary the range of searching (dictionary mutation according to the preset rules, position mask - YouTube channel).

As for GPU. Nobody can offer good support - it is difficult to implement the protection algorithm in Adobe PDF on GPU. GPU exists for Adobe 9 that is never used, as a matter of fact (Adobe faced an epicfail with hashing iteration in it but it was fixed quickly). We wrote about it all - the running speed and peculiarities of protection of various versions of PDF.

Thanks
It takes a long days years too. Maybe there is some service or asic sha256 which can force it faster. Sad

Passcovery

newbie

Activity: 2

Merit: 0

Quote from: YesOrNo on February 06, 2015, 09:42:15 PM

Do somebody know some program where I can use my gpu's to force password to encrypted document ?

Try AccentPPR. The searching speed is high and there are various features to vary the range of searching (dictionary mutation according to the preset rules, position mask - YouTube channel).

As for GPU. Nobody can offer good support - it is difficult to implement the protection algorithm in Adobe PDF on GPU. GPU exists for Adobe 9 that is never used, as a matter of fact (Adobe faced an epicfail with hashing iteration in it but it was fixed quickly). We wrote about it all - the running speed and peculiarities of protection of various versions of PDF.

jbrnt

hero member

Activity: 672

Merit: 500

Quote from: YesOrNo on February 06, 2015, 10:01:57 PM

Yes that program can use gpu but only nvidia and I'm own AMD Undecided

Find a gamer friend who has a top nvidia gpu and test run for an afternoon. May be you will get lucky.

YesOrNo

full member

Activity: 143

Merit: 100

Thank you
I can't see it. Now I'm using Advanced PDF Password Recovery but it can take me one year using cpu Grin

Yes that program can use gpu but only nvidia and I'm own AMD Undecided

jbrnt

hero member

Activity: 672

Merit: 500

How was your PDF protected? Can you view the document? If you can view it, just print to a PDF printer and you will get an unprotected document. If you need a password just to view it. You need a program to bruteforce it. Find out which PDF version is it. Pre 1.3 or 1.4 is easy to crack using cpu.

There are software which uses gpu to crack 1.7 PDF. You need to google it, they are not free.

YesOrNo

full member

Activity: 143

Merit: 100

Do somebody know some program where I can use my gpu's to force password to encrypted document ?

Topic: Brutal force PDF (Read 469 times)