On unconditionally binding code-based commitment schemes

Kirill Morozov, Partha Sarathi Roy, Kouichi Sakurai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this work, we construct a dual version of statistically binding commitment scheme by Jain et al. (Asiacrypt 2012) with shorter commitment size under hardness of syndrome decoding. Then, we point out that perfectly binding variants of the above schemes follow directly from the Randomized McEliece and Niederreiter public key encryption schemes, assuming indistinguishability of permuted Goppa codes, as well as hardness of the exact learning parity with noise (xLPN) problem (for the McEliece scheme) and hardness of syndrome decoding (for the Niederreiter scheme). Our key observation here is that perfect binding (as opposed to statistical binding) requires exact knowledge of minimal distance of the underlying code. Finally, we provide security evaluation of our proposals, and compare their performance with that of existing schemes.

Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Ubiquitous Information Management and Communication, IMCOM 2017
PublisherAssociation for Computing Machinery, Inc
ISBN (Electronic)9781450348881
DOIs
Publication statusPublished - Jan 5 2017
Event11th International Conference on Ubiquitous Information Management and Communication, IMCOM 2017 - Beppu, Japan
Duration: Jan 5 2017Jan 7 2017

Publication series

NameProceedings of the 11th International Conference on Ubiquitous Information Management and Communication, IMCOM 2017

Other

Other11th International Conference on Ubiquitous Information Management and Communication, IMCOM 2017
CountryJapan
CityBeppu
Period1/5/171/7/17

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Information Systems

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  • Cite this

    Morozov, K., Roy, P. S., & Sakurai, K. (2017). On unconditionally binding code-based commitment schemes. In Proceedings of the 11th International Conference on Ubiquitous Information Management and Communication, IMCOM 2017 [101] (Proceedings of the 11th International Conference on Ubiquitous Information Management and Communication, IMCOM 2017). Association for Computing Machinery, Inc. https://doi.org/10.1145/3022227.3022327