Paper 2020/873

Post-Quantum Group Key Agreement Scheme

Julia Bobrysheva and Sergey Zapechnikov

Abstract

Progress in quantum technologies forces the development of new cryptographic primitives that are resistant to attacks of an adversary with a quantum computer. A large number of key establishment schemes have been proposed for two participants, but the area of group post-quantum key establishment schemes has not been studied a lot. Not so long ago, an isogeny-based key agreement scheme was proposed for three participants, based on a gradual increase in the degree of the key. We propose another principle for establishing a key for a group of participants using a tree-structure. The proposed key establishment scheme for four participants uses isogeny of elliptic curves as a mathematical tool.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint. MINOR revision.
Keywords
group key agreementisogeniespost-quantum scheme
Contact author(s)
julia @ epage ru
svzapechnikov @ mephi ru
History
2020-07-12: received
Short URL
https://ia.cr/2020/873
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2020/873,
      author = {Julia Bobrysheva and Sergey Zapechnikov},
      title = {Post-Quantum Group Key Agreement Scheme},
      howpublished = {Cryptology ePrint Archive, Paper 2020/873},
      year = {2020},
      note = {\url{https://eprint.iacr.org/2020/873}},
      url = {https://eprint.iacr.org/2020/873}
}
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