fcrackzip is a zip-file encryption cracker , which can handle (recover / crack / hack) any password encrypted zipfile. Inside it uses a number of methods to accomplish the crack, but this happens nicely behind the scenes. Install and fcrackzip on Ubuntu by typing: cc@zeus:$ sudo aptitude install fcrackzip Use the fcrackzip for password cracking on Ubuntu by typing: cc@zeus:/Desktop$ fcrackzip -v -b -p aaaa -u cuda_dxtc.pdf.zip found file ‘cuda_dxtc.pdf’, (size cp/uc 244965/294438, flags 9, chk a5d3) checking pw rUt~ PASSWORD FOUND!

PDFCrack is a GNU/Linux application (or any other POSIX -compatible system) tool for recovering passwords and content from PDF -files. It is small, command line driven without external dependencies. PDFCrack is released under GPL . Install and pdfcrack on Ubuntu by typing: cc@zeus:$ sudo aptitude install pdfcrack Run a quick cracking power benchmark: cc@zeus:/Desktop$ pdfcrack -b Benchmark: Average Speed (calls / second): MD5: 1728972.6 MD5_50 (fast): 97879.3 MD5_50 (slow): 69167.0 RC4 (40, static): 606555.