Privacy-Preserving Multi-Party Bartering Secure Against Active Adversaries

Stefan Wüller; Ulrike Meyer; Susanne Wetzel

Paper 2017/377

Privacy-Preserving Multi-Party Bartering Secure Against Active Adversaries

Stefan Wüller, Ulrike Meyer, and Susanne Wetzel

Abstract

A majority of electronic bartering transactions is carried out via online platforms. Typically, these platforms require users to disclose sensitive information about their trade capabilities which might restrict their room for negotiation. It is in this context that we propose a novel decentralized and privacy-preserving bartering protocol for multiple parties that offers the same privacy guarantees as provided by traditional bartering and by cash payments. The proposed protocol is even secure against an active attacker who controls a majority of colluding parties.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Preprint. MINOR revision.
Contact author(s): stefan wueller @ rwth-aachen de
History: 2017-05-01: received
Short URL: https://ia.cr/2017/377
License: CC BY

BibTeX

@misc{cryptoeprint:2017/377,
      author = {Stefan Wüller and Ulrike Meyer and Susanne Wetzel},
      title = {Privacy-Preserving Multi-Party Bartering Secure Against Active Adversaries},
      howpublished = {Cryptology {ePrint} Archive, Paper 2017/377},
      year = {2017},
      url = {https://eprint.iacr.org/2017/377}
}