The KeeLoq keyless entry system used by many car makers including Toyota, and apparently the one used for the Prius, has been hacked. Given an hour of access to any key from any car of a given model, and a day of computing, hackers can derive the base code. After that, any specific car of that model can be opened after a few seconds of wireless sniffing when the owner unlocks the car, a few seconds of computing and a few seconds to store the code to clone the keyfob. http://blog.wired.com/27bstroke6/2007/08/r...rchers-cra.html
<div class='quotetop'>QUOTE(takodon @ Aug 30 2007, 11:19 AM) [snapback]504299[/snapback]</div> I've heard that the encryption system is only 48-bit. Given that, this is not hard to imagine.
<div class='quotetop'>QUOTE(takodon @ Aug 30 2007, 10:19 AM) [snapback]504299[/snapback]</div> Here's your club. The dead horse is in the corner over there.
That's a lot of "givens"--enough to make the risk infinitesimally low of it actually happening to you. Besides, someone's only going to bother doing this for high value cars, and I don't think the Prius is in that category.
This is old news, and was covered in another thread. It's of interest from an academic standpoint (I work with Microchip products), but has no practical implications due to the complexity of the process. It's still easier to steal a Prius by loading it onto a truck. Tom
<div class='quotetop'>QUOTE(DougSlug @ Sep 1 2007, 01:24 PM) [snapback]505464[/snapback]</div> Anyway to convert this into a fix for lost key fobs...at $250.00 ea. I would love to be able to hack the key.
<div class='quotetop'>QUOTE(takodon @ Aug 30 2007, 10:19 AM) [snapback]504299[/snapback]</div> That will open the doors (if you have a hacker waiting patiently but inconspicuously beside your car, then locates your car after you park it again), but is it the same code that allows the car to start? Or does that depend if you have the Smart Key System or not?
