Quasi-Dyadic Girault Identification Scheme

  • Brice Odilon BoidjeEmail author
  • Cheikh Thiecoumba Gueye
  • Gilbert Ndollane Dione
  • Jean Belo Klamti
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11445)


Zero-knowledge identification schemes allow a prover to convince a verifier that a certain fact is true, while not revealing any additional information.

In this paper, we propose a scheme whose security relies on the hardness of the Quasi-Dyadic Subcode Equivalence and the Quasi-dyadic syndrome decoding problems. Our code-based scheme is an improvement of the code-based identification scheme devised by Girault. Our construction uses quasi-dyadic subcode with a cheating probability of 1/2. Using quasi-dyadic subcode allows to reduce matrix size and also the communication cost by sending lower data.


Code-based cryptography Identification scheme Syndrome decoding problem Zero-knowledge Quasi-dyadic subcode 



This work is supported by CEA-MITIC/Project CBC and the government of Senegal’s Ministry of Higher Education and Research for ISPQ project.


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Brice Odilon Boidje
    • 1
    Email author
  • Cheikh Thiecoumba Gueye
    • 1
  • Gilbert Ndollane Dione
    • 1
  • Jean Belo Klamti
    • 1
  1. 1.Faculté des Sciences et Techniques, DMI, LACGAAUniversité Cheikh Anta DiopDakarSenegal

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