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Cracking PDF-file passwords using the BeagleBone

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Basic dictionary attack using a BeagleBone to crack pdf passwords by Nuno Alves.


For all intents and purposes, the BeagleBone is just a very portable linux computer. This means I could write all the brute-force and all I/O routines directly in C and BASH. It worked great.
In terms of performance, the BeagleBone is able to test about 7,000 words per second, whereas my macbook pro can to about 25,000. Since, I am just using a brute approach… It takes about 16 minutes to test every single 4 letter word (uppercase+lowercase+symbols), and 900 minutes to test every single 5 letter word.



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