Wonderful ... the encryption in our remote keys has now been cracked. :-/
01-30-2005, 05:41 PM
#1
AudiWorld Super User
Thread Starter
Join Date: Dec 2003
Posts: 7,152
Likes: 0
Received 0 Likes
on
0 Posts
Wonderful ... the encryption in our remote keys has now been cracked. :-/
They were able to crack a key in 15 minutes. No more need to punch holes in doors to steal cars!
Stephen<ul><li><a href="http://money.cnn.com/2005/01/30/technology/chips_autos.reut/index.htm">JHU report says chips in car keys and swipe-by gas-pay keyrings are easily compromised</a></li></ul>
Stephen<ul><li><a href="http://money.cnn.com/2005/01/30/technology/chips_autos.reut/index.htm">JHU report says chips in car keys and swipe-by gas-pay keyrings are easily compromised</a></li></ul>
01-30-2005, 08:36 PM
#7
It's just generalization - it doesn't give specifics about which RFID was cracked
Each system is different and proprietary.
Copying a key typically requires having a RF rig to listen to the key exchange while someone walks past to unlock their car.
Of course if the post had said they found the key matrix for all Audi Remotes then I'd be really worried. That would reduce the time brute force attack down to something in the days or hours.
Walking up to random car X and performing brute force key search will still take just as long as always.
And a screw-driver will always be the tool of choice for neighbourhood crack-addict who doesn't have $50K for all the RF & Computer equipment.
Bottom-line : bad journalism, half-truths, and probably just fear mongering inspired by a competitor of TI.
Copying a key typically requires having a RF rig to listen to the key exchange while someone walks past to unlock their car.
Of course if the post had said they found the key matrix for all Audi Remotes then I'd be really worried. That would reduce the time brute force attack down to something in the days or hours.
Walking up to random car X and performing brute force key search will still take just as long as always.
And a screw-driver will always be the tool of choice for neighbourhood crack-addict who doesn't have $50K for all the RF & Computer equipment.
Bottom-line : bad journalism, half-truths, and probably just fear mongering inspired by a competitor of TI.
Trending Topics
01-31-2005, 03:06 AM
#8
AudiWorld Super User
Thread Starter
Join Date: Dec 2003
Posts: 7,152
Likes: 0
Received 0 Likes
on
0 Posts
As I understood it ...
Each of these keys is based upon the same central IT chip. If you can crack that chip for one then you can crack it for any.
The keys give off a sequence of codes. So yes, I would think you would need to listen for the key code. I wonder how many in the sequence you would need?
Mostly, I just find it interesting. Not worrying. :-)
Stephen
The keys give off a sequence of codes. So yes, I would think you would need to listen for the key code. I wonder how many in the sequence you would need?
Mostly, I just find it interesting. Not worrying. :-)
Stephen
01-31-2005, 03:09 AM
#9
AudiWorld Super User
Thread Starter
Join Date: Dec 2003
Posts: 7,152
Likes: 0
Received 0 Likes
on
0 Posts
I don't agree. Some encryption is quite strong.
These keys were likely only 40-bit to avoid export restrictions which were in place at the time. In other words, the USA government intentionally made them weak. Larger key lengths are not subject to brute force attacks like this.
Stephen
Stephen