NEWS

July 19, 2009: Update on Attacks, Simple Power Analysis is possible

By means of Simple Power Analysis (SPA), now we can recover the manufacturer key embedded in a KeeLoq receiver using a single power trace. The relevant paper "Breaking KeeLoq in a Flash: On Extracting Keys at Lightning Speed" got accepted at Africacrypt 2009 and has been presented in Gammarth, Tunisia in June 2009.

December 27, 2008: Presentation on the 25th Chaos Communication Congress in Berlin

"Messing Around with Garage Doors - Breaking Remote Keyless Entry Systems with Power Analysis " Full video of the talk (an extended Version of Christof Paar’s talk on CRYPTO 2008) including life demonstrations:

May 6, 2008: KeeLoq paper accepted at Crypto 2008

Our paper "On the Power of Power Analysis in the Real World: A Complete Break of the KeeLoq Code Hopping Scheme" got accepted at Crypto 2008 and will be presented in Santa Barbara in August 2008.

April 5, 2008: EMSEC demonstrates KeeLoq attacks on German television

3Sat NANO
(Attention, large file!)

Or play it online:

March 31, 2008: Press Release about the KeeLoq attack available

English Press Release
German Press Release

March 29, 2008: Website launched

This website has been launched.

February 2, 2008: Scientific paper on KeeLoq attack released

A paper describing the scientific aspects of our attacks has been published on the eprint server.
Physical Cryptanalysis of KeeLoq Code Hopping Applications

December 2007

We succeed with recovering both the manufacturer key and the device key from several real-world systems emplyoing the KeeLoq cipher. We inform one manufacturer of KeeLoq products about the attacks.