Journal of Cryptographic Engineering

, Volume 1, Issue 1, pp 71–77

Synchronization method for SCA and fault attacks

Authors

    • University of Cambridge Computer Laboratory
Regular Paper

DOI: 10.1007/s13389-011-0004-0

Cite this article as:
Skorobogatov, S. J Cryptogr Eng (2011) 1: 71. doi:10.1007/s13389-011-0004-0

Abstract

This paper shows how effectiveness of side-channel and fault attacks can be improved for devices running from internal clock sources. Due to frequency instability of internally clocked chips, attacking them was always a great challenge. A significant improvement was achieved by using a frequency injection locking technique via the power supply line of a chip. As a result, the analysis of a semiconductor chip can be accomplished with less effort and in shorter time. Successful synchronization was demonstrated on a secure microcontroller and a secure FPGA. This paper presents research into limits for synchronization and discusses possible countermeasures against frequency injection attacks.

Keywords

Side-channel attacks Hardware security Frequency injection locking Power analysis

Copyright information

© Springer-Verlag 2011