SoK: SCA-secure ECC in software – mission impossible?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14330%2F23%3A00134761" target="_blank" >RIV/00216224:14330/23:00134761 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.46586/tches.v2023.i1.557-589" target="_blank" >http://dx.doi.org/10.46586/tches.v2023.i1.557-589</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.46586/tches.v2023.i1.557-589" target="_blank" >10.46586/tches.v2023.i1.557-589</a>

Result language

angličtina

Original language name

SoK: SCA-secure ECC in software – mission impossible?

Original language description

This paper describes an ECC implementation computing the X25519 keyexchange protocol on the Arm Cortex-M4 microcontroller. For providing protections against various side-channel and fault attacks we first review known attacks and countermeasures, then we provide software implementations that come with extensive mitigations, and finally we present a preliminary side-channel evaluation. To our best knowledge, this is the first public software claiming affordable protection against multiple classes of attacks that are motivated by distinct real-world application scenarios. We distinguish between X25519 with ephemeral keys and X25519 with static keys and show that the overhead to our baseline unprotected implementation is about 37% and 243%, respectively. While this might seem to be a high price to pay for security, we also show that even our (most protected) static implementation is at least as efficient as widely-deployed ECC cryptographic libraries, which offer much less protection.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

IACR Transactions on Cryptographic Hardware and Embedded Systems, Volume 2023, Issue 1

ISBN

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ISSN

2569-2925

e-ISSN

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Number of pages

33

Pages from-to

557-589

Publisher name

Ruhr-University of Bochum

Place of publication

Germany

Event location

Conference on Cryptographic Hardware and Embedde

Event date

Jan 1, 2023

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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