Solving the problem of Blockwise Isomorphism of Polynomials with Circulant matrices

Yasufumi Hashimoto

Paper 2021/385

Solving the problem of Blockwise Isomorphism of Polynomials with Circulant matrices

Yasufumi Hashimoto

Abstract

The problem of Blockwise Isomorphism of Polynomials was introduced by Santoso at PQCrypto 2020 as a generalization of the problem of Isomorphism of Polynomials. In the present paper, we describe how to solve this problem with circulant matrices, used in Santoso's Diffie-Hellman type encryption scheme.

Note: 13 pages

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint. MINOR revision.
Keywords: Isomorphism of Polynomials Blockwise Isomorphism of Polynomials circulant matrix
Contact author(s): hashimoto @ math u-ryukyu ac jp
History: 2021-03-27: received
Short URL: https://ia.cr/2021/385
License: CC BY

BibTeX

@misc{cryptoeprint:2021/385,
      author = {Yasufumi Hashimoto},
      title = {Solving the problem of Blockwise Isomorphism of Polynomials with Circulant matrices},
      howpublished = {Cryptology ePrint Archive, Paper 2021/385},
      year = {2021},
      note = {\url{https://eprint.iacr.org/2021/385}},
      url = {https://eprint.iacr.org/2021/385}
}