For example, the logon password for Windows Vista might be an eight-character string composed of uppercase and lowercase alphabetic characters. Using the "brute force" technique of recovering passwords, it was possible, though time-consuming, to recover passwords from popular applications. There's a bit more detail on the elecom approach in their one-page PDF. I'm encouraged that we're finally able to harness all that video silicon to do useful things beyond rendering Doom at 60 frames per second with anti-aliasing and anisotropic filtering. GPUs, with their massive built-in paralellism, were built to do things like this. Less complex passwords can be retrieved in minutes, rather than hours or days. By harnessing a $150 GPU - less powerful than the nVidia 8800 card - Elcomsoft says they can be cracked in just three to five days. The toughest passwords, including those used to log in to a Windows Vista computer, would normally take months of continuous computer processing time to crack using a computer's central processing unit (CPU). Using an $800 graphics card from nVidia called the GeForce 8800 Ultra, Elcomsoft increased the speed of its password cracking by a factor of 25, according to the company's CEO, Vladimir Katalov. It takes advantage of the "massively parallel processing" capabilities of a graphics processing unit (GPU) - the processor normally used to produce realistic graphics for video games. Hardware Assisted Brute Force Attacks: Still For DummiesĮvidently hardware assisted brute force password cracking has arrived:Ī technique for cracking computer passwords using inexpensive off-the-shelf computer graphics hardware is causing a stir in the computer security community.Įlcomsoft, a software company based in Moscow, Russia, has filed a US patent for the technique.
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