Computer Engineering Seminar: Fault Injection Attacks on Cryptographic Devices and Countermeasures

Monday, January 12, 2009 - 2:10pm

Title: Fault Injection Attacks on Cryptographic Devices and
Speaker: Israel Koren – Professor, University of Massachusetts at
Date: 1/15/2009
Time: 3:00pm
Location: CS Conference Rm – HFH 1132

Abstract: Numerous schemes for extracting the secret key out of
cryptographic devices using side channel attacks have been developed.
One of the most effective side channel attacks is through maliciously
injecting faults into the device and observing the erroneous results
produced by the device. In some extreme cases, a single fault
injection experiment has been shown to be sufficient for retrieving
the secret key.
In this talk we describe several fault injection attacks on symmetric
key and public key ciphers and outline countermeasures that have been
developed to protect cryptographic devices against such attacks. We
then show that some of these countermeasures do not provide the
desired protection, and even worse, they may make other side channel
attacks easier to mount.

Biography: Israel Koren is a Professor of Electrical and Computer
Engineering at the University of Massachusetts, Amherst and a fellow
of the IEEE. He has been a consultant to companies like IBM, Analog
Devices, Intel, AMD and National Semiconductors. His research
interests include Fault-Tolerant systems, secure cryptographic
devices, VLSI yield and reliability and Computer Arithmetic. He
publishes extensively and has over 200 publications in refereed
journals and conferences. He is the author of the textbook “Computer
Arithmetic Algorithms”; 2nd Edition, A.K. Peters, Ltd., 2002, a co-
author of the textbook “Fault Tolerant Systems” Morgan-Kaufman, 2007.
He co-founded in 2004 and co-organized the annual workshop on Fault
Diagnosis and Tolerance in Cryptography – FDTC, which has become the
main conference for presenting new fault injection attacks and

Departmental Host: Fred Chong, Director, CE Program and Cetin Koc, CS