Paper 2014/352

Multi-Vendor PayWord with Payment Approval

Andrea Huszti

Abstract

One of the most well known micropayment scheme is the PayWord scheme. It is designed to be onevendor, so if we apply it for multiple vendors, it does not protect against double spending. We extended the PayWord scheme, it supports shopping at multiple vendors without an on-line broker or an on-line secure database. The proposed credit-based system uses one hash chain, hence besides the secret signature key only the seed and a random value should be securely stored. Our scheme is analyzed in applied pi calculus, we prove that it fulfills payment approval, secure payment authorization, secrecy of payment information and unreusability.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. Minor revision. Proceedings of the 2013 International Conference on Security and Management. Las Vegas: CSREA Press, Las Vegas, 2013. pp. 265-271.
Keywords
PayWordmulti-vendor micropaymentpayment approvalapplied pi calculus
Contact author(s)
huszti andrea @ inf unideb hu
History
2014-05-20: received
Short URL
https://ia.cr/2014/352
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2014/352,
      author = {Andrea Huszti},
      title = {Multi-Vendor PayWord with Payment Approval},
      howpublished = {Cryptology ePrint Archive, Paper 2014/352},
      year = {2014},
      note = {\url{https://eprint.iacr.org/2014/352}},
      url = {https://eprint.iacr.org/2014/352}
}
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