PDF 1.4 Password hash cracking
#5
Your command doesn't really matter. The GTX 970 benchmarks at about 7800 kH/s for this hash type so even just 8 character passwords including all characters is 95^8 combinations. It will take almost 30 years to try all 8 char combinations on the 970.

9 chars will take two and a half millennia...

Maybe a nice dictionary attack might be better (unless passwords are randomly generated).


Messages In This Thread
PDF 1.4 Password hash cracking - by Sheldor - 11-14-2015, 05:55 PM
RE: PDF 1.4 Password hash cracking - by Mem5 - 11-14-2015, 06:18 PM
RE: PDF 1.4 Password hash cracking - by Sheldor - 11-14-2015, 06:53 PM
RE: PDF 1.4 Password hash cracking - by Mem5 - 11-14-2015, 08:34 PM
RE: PDF 1.4 Password hash cracking - by rico - 11-14-2015, 11:38 PM
RE: PDF 1.4 Password hash cracking - by epixoip - 11-15-2015, 04:34 AM
RE: PDF 1.4 Password hash cracking - by Sheldor - 11-16-2015, 07:52 PM
RE: PDF 1.4 Password hash cracking - by rico - 11-16-2015, 11:59 PM