Exploiting spin-orbit torque devices as reconfigurable logic for circuit obfuscation


Journal Article

© 1982-2012 IEEE. Circuit obfuscation is a frequently used approach to conceal logic functionalities in order to prevent reverse engineering attacks on fabricated chips. Efficient obfuscation implementations are expected with lower design complexity and overhead but higher attack difficulties. In this paper, an emerging obfuscation approach is proposed by leveraging spin-orbit torque (SOT) devices-based look-up-tables as reconfigurable logic to replace the carefully selected gates. It is essentially impossible to identify the obfuscated gate with SOTs inside according to the physical geometry characteristics because the configured functionalities are represented by magnetization states. Such an obfuscation approach makes the circuit security further improved with high exponential attack complexities. Experiments on MCNC and ISCAS 85/89 benchmark suits show that the proposed approach could reduce the area overheads due to obfuscation by 10% averagely.

Full Text

Duke Authors

Cited Authors

  • Yang, J; Wang, X; Zhou, Q; Wang, Z; Li, H; Chen, Y; Zhao, W

Published Date

  • January 1, 2019

Published In

Volume / Issue

  • 38 / 1

Start / End Page

  • 57 - 69

International Standard Serial Number (ISSN)

  • 0278-0070

Digital Object Identifier (DOI)

  • 10.1109/TCAD.2018.2802870

Citation Source

  • Scopus