Multivariate public key cryptography with polynomial composition

Emile Hautefeuille

Paper 2021/1476

Multivariate public key cryptography with polynomial composition

Emile Hautefeuille

Abstract

This paper presents a new public key cryptography scheme using multivariate polynomials over a finite field. Each multivariate polynomial from the public key is obtained by secretly and repeatedly composing affine transformations with series of quadratic polynomials (in a single variable). The main drawback of this scheme is the length of the public key.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint.
Keywords: public-key cryptography multivariate cryptography
Contact author(s): emile hautefeuille @ polytechnique edu
History: 2022-06-09: last of 5 revisions; 2021-11-06: received; See all versions
Short URL: https://ia.cr/2021/1476
License: CC BY

BibTeX

@misc{cryptoeprint:2021/1476,
      author = {Emile Hautefeuille},
      title = {Multivariate public key cryptography with polynomial composition},
      howpublished = {Cryptology ePrint Archive, Paper 2021/1476},
      year = {2021},
      note = {\url{https://eprint.iacr.org/2021/1476}},
      url = {https://eprint.iacr.org/2021/1476}
}