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

  • Begül Bilgin
  • Andrey Bogdanov
  • Miroslav Knežević
  • Florian Mendel
  • Qingju Wang
Conference paper

DOI: 10.1007/978-3-642-40349-1_9

Part of the Lecture Notes in Computer Science book series (LNCS, volume 8086)
Cite this paper as:
Bilgin B., Bogdanov A., Knežević M., Mendel F., Wang Q. (2013) Fides: Lightweight Authenticated Cipher with Side-Channel Resistance for Constrained Hardware. In: Bertoni G., Coron JS. (eds) Cryptographic Hardware and Embedded Systems - CHES 2013. CHES 2013. Lecture Notes in Computer Science, vol 8086. Springer, Berlin, Heidelberg

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.

Keywords

Lightweight cryptography authenticated encryption keyed sponge glitch-free masking APN permutation almost bent permutation 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Begül Bilgin
    • 1
    • 2
  • Andrey Bogdanov
    • 3
  • Miroslav Knežević
    • 4
  • Florian Mendel
    • 5
  • Qingju Wang
    • 1
    • 6
  1. 1.ESAT/COSIC and iMindsKU LeuvenBelgium
  2. 2.EEMCS-DIESUniversity of TwenteThe Netherlands
  3. 3.Department of MathematicsTechnical University of DenmarkDenmark
  4. 4.NXP SemiconductorsBelgium
  5. 5.IAIKGraz University of TechnologyAustria
  6. 6.Department of Computer Science and EngineeringShanghai Jiao Tong UniversityChina

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