Cryptanalysis of a public-key encryption scheme based on the polynomial reconstruction problem

Jean-Sebastien Coron

Paper 2003/036

Cryptanalysis of a public-key encryption scheme based on the polynomial reconstruction problem

Jean-Sebastien Coron

Abstract

We describe a cryptanalysis of a public-key encryption scheme based on the polynomial reconstruction problem. Given the public-key and a ciphertext, we recover the corresponding plaintext in polynomial time. Therefore, the scheme is not one-way. Our technique is a variant of the Berlekamp-Welsh algorithm.

Note: The attack is now proven (in the previous version, the attack was heuristic).

Metadata

Available format(s): PDF PS
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: Error-correcting codes.
Contact author(s): coron @ clipper ens fr
History: 2003-03-06: revised; 2003-02-23: received; See all versions
Short URL: https://ia.cr/2003/036
License: CC BY

BibTeX

@misc{cryptoeprint:2003/036,
      author = {Jean-Sebastien Coron},
      title = {Cryptanalysis of a public-key encryption scheme based on the polynomial reconstruction problem},
      howpublished = {Cryptology {ePrint} Archive, Paper 2003/036},
      year = {2003},
      url = {https://eprint.iacr.org/2003/036}
}