Fides: Lightweight Authenticated Cipher with Side-Channel Resistance for Constrained Hardware

Begul Bilgin, Andrey Bogdanov, Miroslav Knezevic, Florian Mendel, Qingju Wang

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

In this paper, we present a novel lightweight authenticated cipher optimized for hardware implementations called Fides. It is an online nonce-based authenticated encryption scheme with authenticated data whose area requirements are as low as 793 GE and 1001 GE for 80-bit and 96-bit security, respectively. This is at least two times smaller than its closest competitors Hummingbird-2 and Grain-128a. While being extremely compact, Fides is both throughput and latency efficient, even in its most serial implementations. This is attained by our novel sponge-like design approach. Moreover, cryptographically optimal 5-bit and 6-bit S-boxes are used as basic nonlinear components while paying a special attention on the simplicity of providing first order side-channel resistance with threshold implementation.
Original languageEnglish
Title of host publicationCryptographic Hardware and Embedded Systems - CHES 2013 : 15th International Workshop, Santa Barbara, CA, USA, August 20-23, 2013. Proceedings
PublisherSpringer
Publication date2013
Pages142-158
ISBN (Print)978-3-642-40348-4
ISBN (Electronic)978-3-642-40349-1
DOIs
Publication statusPublished - 2013
Event15th International Workshop on Cryptographic Hardware and Embedded Systems (CHES 2013) - Santa Barbara, California, United States
Duration: 20 Aug 201323 Aug 2013
http://www.chesworkshop.org/ches2013/

Workshop

Workshop15th International Workshop on Cryptographic Hardware and Embedded Systems (CHES 2013)
CountryUnited States
CitySanta Barbara, California
Period20/08/201323/08/2013
Internet address
SeriesLecture Notes in Computer Science
Volume8086
ISSN0302-9743

Keywords

  • Lightweight cryptography
  • Authenticated encryption
  • Keyed sponge
  • Glitch-free masking
  • APN permutation
  • Almost bent permutation

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