Sniffing And Cracking Rfid Crypto

rfid cracking
i always get a kick out of companies using proprietary crypto in their products.  hackaday reader b-rad writes,

Researchers at Johns Hopkins University and RSA Laboratories have demonstrated how too crack the encryption of a Texas Instrument RFID transponder used in many “immobilizer-equipped” car keys and ExxonMobile SpeedPass e-payment fobs.

the team was able to reverse engineer the protocol and come up with a system for brute forcing the key recovery process in a matter of hours.  they also created a proof-of-concept radio device that could be used to mimic a speedpass fob to purchase gasoline.

their cracking device utilizes 16 fpgas and is able to do in a couple hours what 10 general purpose pcs would do in 2 weeks, all for the price of about $3500.  this reminds me of the bombes used by british cryptanalysts to crack enigma cyphers in world war 2.  pretty cool stuff.

6 thoughts on “Sniffing And Cracking Rfid Crypto

Leave a Reply to hah Cancel reply

Please be kind and respectful to help make the comments section excellent. (Comment Policy)

This site uses Akismet to reduce spam. Learn how your comment data is processed.