TIGER: TrIaGing KEy Refreshing Frequency via Digital Sensors

Md Toufiq Hasan Anik, Hasin Ishraq Reefat, Mohammad Ebrahimabadi, Javad Bahrami, Hossein Pourmehrani, Jean-Luc Danger, Jean-Luc Danger, Sylvain Guilley, Sylvain Guilley, Naghmeh Karimi

2025

Abstract

Key refreshing is a pragmatic countermeasure to side-channel attacks, designed to revoke and replace the key promptly when an attack is either anticipated or suspected. This system-level approach rekeys the device under attack and keeps paired devices protected if cryptography secures data in transit. The frequency of key refreshing is critical: too infrequent, and security risks increase; too frequent, and system performance degrades. This frequency is set pre-silicon via threat analysis but may be inefficient as leakage varies with operating conditions. To fill the gap, we introduce a post-silicon strategy for optimal rekeying frequency. Our proposed scheme TIGER deploys a digital sensor to monitor environmental conditions and enabling inference at runtime by pre-characterizing the leakage rate correlated to the digital sensor measurements. The accumulated leakage rate helps deduce a cutoff time for rekeying. We demonstrate the end-to-end feasibility of this approach on an FPGA board designed for side-channel threat assessment.

Paper Citation

in Harvard Style

Anik M., Reefat H., Ebrahimabadi M., Bahrami J., Pourmehrani H., Danger J., Guilley S. and Karimi N. (2025). TIGER: TrIaGing KEy Refreshing Frequency via Digital Sensors. In Proceedings of the 22nd International Conference on Security and Cryptography - Volume 1: SECRYPT; ISBN 978-989-758-760-3, SciTePress, pages 372-380. DOI: 10.5220/0013515200003979

in Bibtex Style

@conference{secrypt25,
author={Md Anik and Hasin Reefat and Mohammad Ebrahimabadi and Javad Bahrami and Hossein Pourmehrani and Jean-Luc Danger and Sylvain Guilley and Naghmeh Karimi},
title={TIGER: TrIaGing KEy Refreshing Frequency via Digital Sensors},
booktitle={Proceedings of the 22nd International Conference on Security and Cryptography - Volume 1: SECRYPT},
year={2025},
pages={372-380},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013515200003979},
isbn={978-989-758-760-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 22nd International Conference on Security and Cryptography - Volume 1: SECRYPT
TI - TIGER: TrIaGing KEy Refreshing Frequency via Digital Sensors
SN - 978-989-758-760-3
AU - Anik M.
AU - Reefat H.
AU - Ebrahimabadi M.
AU - Bahrami J.
AU - Pourmehrani H.
AU - Danger J.
AU - Guilley S.
AU - Karimi N.
PY - 2025
SP - 372
EP - 380
DO - 10.5220/0013515200003979
PB - SciTePress