Test Apparatus for Side-Channel Resistance Compliance Testing - - PowerPoint PPT Presentation

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Test Apparatus for Side-Channel Resistance Compliance Testing - - PowerPoint PPT Presentation

Mar 07, 2023 187 likes •364 views

Institute for Applied Information Processing and Communications (IAIK) Test Apparatus for Side-Channel Resistance Compliance Testing Michael Hutter, Mario Kirschbaum, Thomas Plos, Jrn-Marc Schmidt NIAT Workshop 2011 Institute for Applied

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Institute for Applied Information Processing and Communications (IAIK) 1

TU Graz/Computer Science/IAIK/VLSI/Name Project

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TU Graz/Computer Science/IAIK/SEnSE NIAT 2011 Nara, 27.09.2011

Test Apparatus for Side-Channel Resistance Compliance Testing

Michael Hutter, Mario Kirschbaum, Thomas Plos, Jörn-Marc Schmidt

NIAT Workshop 2011

Institute for Applied Information Processing and Communications (IAIK), Graz University of Technology

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Institute for Applied Information Processing and Communications (IAIK) 2

TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

What is this talk about?

Challenge

How to quantify side-channel resistance? How to estimate the security level? How to perform SCA compliance testing?

Proposal

Non-invasive attack testing apparatus

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Institute for Applied Information Processing and Communications (IAIK) 3

TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

ISO/IEC 10373-6

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

The Classical SCA Setup

meas

1 GND1 GND

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

The Proposed Apparatus

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

What are the Advantages?

  • 1. Reduction of noise
  • 2. Higher measurement

sensitivity

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

The AT89S8253 Apparatus

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

The ATmega128 Apparatus

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

The GRANDESCA Apparatus

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

Attack Scenarios

  • 1. White-box evaluation
  • Target: MOV operation
  • 2. Black-box evaluation
  • Target: 1st S-box output of an AES-128 encryption (round 1)
  • IC1: random input
  • IC2: zero input
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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

Results of Attacks

Reference Attack Difference Attack

σ = 0.67 σ = 0.96

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

AES Results

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

Summary

Using two devices improves attack Less noise Better acquisition resolution Can be used for

Device characterization, profiling, countermeasure evaluation, SCA-resistance tests, compliance testing, attacks, …

Michael Hutter

IAIK – Graz University of Technology michael.hutter@iaik.tugraz.at www.iaik.tugraz.at

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

The Wheatstone Bridge

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TU Graz/Computer Science/IAIK/SEnSE Nara, 27.09.2011 NIAT 2011

Signal-to-Noise Ratio

Reference Attack Difference Attack