Oblivious Transfer Is Symmetric

Stefan Wolf; Jürg Wullschleger

Paper 2004/336 Original: eprint.iacr.org/2004/336 ↗

Oblivious Transfer Is Symmetric

Stefan Wolf

Jürg Wullschleger

Abstract

We show that oblivious transfer of bits from $A$ to $B$ can be obtained from a single instance of the same primitive from $B$ to $A$. Our reduction is perfect and shows that oblivious transfer is in fact a symmetric functionality. This solves an open problem posed by Crépeau and Sántha in 1991.

Metadata

Available format(s): PDF
Category: Foundations
Publication info: Preprint.
History: 2006-02-23: last updated; 2004-12-02: published
Short URL: https://ia.cr/2004/336
License: https://creativecommons.org/licenses/by/4.0/

BibTeX

@misc{cryptoeprint:2004/336,
      author = {Stefan Wolf and Jürg Wullschleger},
      title = {Oblivious Transfer Is Symmetric},
      howpublished = {Cryptology {ePrint} Archive, Paper 2004/336},
      year = {2004},
      url = {https://eprint.iacr.org/2004/336}
}