A Brief Retrospective Look at the Cayley-Purser Public-key  Cryptosystem, 19 Years Later

Douglas R.  Stinson

Paper 2018/270

A Brief Retrospective Look at the Cayley-Purser Public-key Cryptosystem, 19 Years Later

Douglas R. Stinson

Abstract

The purpose of this paper is to describe and analyze the Cayley-Purser algorithm, which is a public-key cryptosystem proposed by Flannery in 1999. I will present two attacks on it, one of which is apparently new. I will also examine a variant of the Cayley-Purser algorithm that was patented by Slavin in 2008, and show that it is also insecure.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Preprint. MINOR revision.
Keywords: cryptanalysis
Contact author(s): dstinson @ uwaterloo ca
History: 2018-03-14: received
Short URL: https://ia.cr/2018/270
License: CC BY

BibTeX

@misc{cryptoeprint:2018/270,
      author = {Douglas R.  Stinson},
      title = {A Brief Retrospective Look at the Cayley-Purser Public-key  Cryptosystem, 19 Years Later},
      howpublished = {Cryptology {ePrint} Archive, Paper 2018/270},
      year = {2018},
      url = {https://eprint.iacr.org/2018/270}
}