An Open Approach for Designing Secure Electronic Immobilizers

Kerstin Lemke-Rust, Ahmad-Reza Sadeghi, Christian Stüble

Information Security Practice and Experience, First International Conference, ISPEC 2005, Singapore, April 11-14, 2005.


The automotive industry has developed electronic immobi- lizers to reduce the number of car thefts since the mid nineties. However, there is not much information on the current solutions in the public do- main, and the annual number of stolen cars still causes a signi cant loss. This generates other costs particularly regarding the increased insurance fees each individual has to pay. In this paper we present a system model that captures a variety of se- curity aspects concerning electronic immobilizers. We consider generic security and functional requirements for constructing secure electronic immobilizers. The main practical problems and limitations are addressed and we give some design guidance as well as possible solutions.


tags: electronic immobilizer, Ma, motor control unit, RFID, transponder