A Study on Evaluation Board Requirements for Assessing Vulnerability of Cryptographic Modules to Side-Channel Attacks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We studied for specifying requirements for side-channel attack (SCA) vulnerability evaluation boards. SCAs are a potential threat to cryptographic modules mounted in electronics products. Cryptographic modules are required to be evaluated in terms of vulnerability by using a test board. However, no reasonable requirements for such test boards have been specified. In this paper, we investigated the signal-to-noise ratio (SNR) of side-channel leakage and the transfer impedance from the side-channel leakage source to an observation port where side-channel leakage is probed in an evaluation board. We examined two models of existing SCA vulnerability evaluation boards that implemented the Advanced Encryption Standard (AES). Results suggest that cryptographic modules need to provide SNRs of side-channel leakage greater than 2 dB for implementations of the cryptographic algorithm involving no SCA countermeasures. It is also inferred that the transfer impedance needs to satisfy two conflicting requirements. The transfer impedance should be as large as possible, considering the ease of evaluation. At the same time, the transfer impedance needs to be low enough to suppress fluctuations in the power supply voltage and guarantee evaluation in a state equivalent to the actual operating state of the IC. Coaxial connectors would be recommended to be implemented for increasing the SNR and for reproducibility of measurements.

Original languageEnglish
Title of host publication2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages528-531
Number of pages4
ISBN (Electronic)9781728174303
DOIs
Publication statusPublished - Jul 2020
Event2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020 - Reno, United States
Duration: Jul 28 2020Aug 28 2020

Publication series

Name2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020

Conference

Conference2020 IEEE International Symposium on Electromagnetic Compatibility and Signal/Power Integrity, EMCSI 2020
CountryUnited States
CityReno
Period7/28/208/28/20

Keywords

  • cryptographic module
  • evaluation board
  • side-channel attack
  • signal-to-noise ratio

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Radiation
  • Signal Processing
  • Information Systems and Management

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