Protocols for Authenticated Oblivious Transfer

Mehrad Jaberi; Hamid Mala

Paper 2016/607

Protocols for Authenticated Oblivious Transfer

Mehrad Jaberi and Hamid Mala

Abstract

Oblivious transfer (OT) is a basic building block in many cryptographic protocols. In this paper, we exploit some well-known authenticated Diffie-Hellman-based key exchange protocols to build three authenticated 1-out-of-2 oblivious transfers. We show that our proposed protocols are secure in the semi-honest model. We also compare our schemes with three similar 1-out-of-2 OT protocols and show that authentication in our schemes costs only up to either two more exponentiations or one message signing, compared to those with no authentication.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Published elsewhere. Minor revision. 13th International ISC Conference on Information Security and Cryptology, 2016
Keywords: oblivious transfer OT secure computation authentication key exchange
Contact author(s): mehr j @ hotmail com
History: 2016-06-14: received
Short URL: https://ia.cr/2016/607
License: CC BY

BibTeX

@misc{cryptoeprint:2016/607,
      author = {Mehrad Jaberi and Hamid Mala},
      title = {Protocols for Authenticated Oblivious Transfer},
      howpublished = {Cryptology {ePrint} Archive, Paper 2016/607},
      year = {2016},
      url = {https://eprint.iacr.org/2016/607}
}