Paper 2015/673 Original: eprint.iacr.org/2015/673 ↗

Decaf: Eliminating cofactors through point compression

Mike Hamburg
Abstract

We propose a new unified point compression format for Edwards, Twisted Edwards and Montgomery curves over large-characteristic fields, which effectively divides the curve's cofactor by 4 at very little cost to performance. This allows cofactor-4 curves to efficiently implement prime-order groups.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint.
History
2015-07-05: last updated
2015-07-05: published
Short URL
https://ia.cr/2015/673
License
https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2015/673,
      author = {Mike Hamburg},
      title = {Decaf: Eliminating cofactors through point compression},
      howpublished = {Cryptology {ePrint} Archive, Paper 2015/673},
      year = {2015},
      url = {https://eprint.iacr.org/2015/673}
}
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