Paper 2017/1220

Off-line Digital Cash Schemes Providing Unlinkability, Anonymity and Change

Lynn Batten and Xun Yi

Abstract

Several ecash systems have been proposed in the last twenty years or so, each offering features similar to real cash. One feature which to date has not been provided is that of a payee giving change to a payer for an e-coin in an off-line setting. In this paper, we indicate how an off-line ecash system can solve the change-giving problem. In addition, our protocol provides the usual expected features of anonymity and unlinkability of the payer, but can reveal the identity of an individual who illegally tries to spend ecash twice.

Note: Subsequent to the initial upload on ePrint, the paper was accepted by a journal with some revisions.

Metadata
Available format(s)
PDF
Publication info
Published elsewhere. Minor revision. Journal of Electronic Commerce Research
DOI
10.1007/s10660-018-9289-8
Keywords
Digital moneygroup blind signaturedouble spending
Contact author(s)
lynn batten @ deakin edu au
History
2018-02-01: revised
2017-12-22: received
See all versions
Short URL
https://ia.cr/2017/1220
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2017/1220,
      author = {Lynn Batten and Xun Yi},
      title = {Off-line Digital Cash Schemes Providing Unlinkability, Anonymity and Change},
      howpublished = {Cryptology ePrint Archive, Paper 2017/1220},
      year = {2017},
      doi = {10.1007/s10660-018-9289-8},
      note = {\url{https://eprint.iacr.org/2017/1220}},
      url = {https://eprint.iacr.org/2017/1220}
}
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