pdfcrack is a simple tool for recovering passwords from pdf-documents.
It should be able to handle all pdfs that uses the standard security handler
but the pdf-parsing routines are a bit of a quick hack so you might stumble
across some pdfs where the parser needs to be fixed to handle.

Type 'make' to build the program. You will need to have make and a recent
version of GCC installed but there are no external dependencies on libraries.
You will have to add the -march-switch in the CFLAGS-option in Makefile
for best optimization on your platform. Look into the GCC-manual 
(http://gcc.gnu.org/onlinedocs/) if you are unsure.

The program is distributed under GPL version 2 (or later).

Features available in this release (check TODO for features that might come):
* Both owner- and user-passwords with the Standard Security Handler, rev 2 & 3.
* Search by wordlist
* Search by bruteforcing with specific charset
* Optimized search for owner-password when user-password is known (or empty)
* Extremely simple permutations of passwords (makes first letter uppercase)

- currently only useful for bruteforcing with charsets:
* Auto-save when interrupted
* Loading saved state

- currently only for bruteforcing with charsets:
* Minimum length of password to start at
* Maximum length of password to try


Sort your wordlist by length for best performance.