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PRIPAY: A Privacy Preserving Architecture for Secure Micropayments

Authors:
Christoforos Ntantogian
Dimitris Gkikakis
Christos Xenakis

Keywords: micropayments; privacy; mobile operators; trusted third party.

Abstract:
This paper proposes a privacy preserving architecture, called PRIPAY, which enables micropayments and financial transactions through mobile/wireless operators (2G, 3G, WLANs, 4G, etc.) in a secure and efficient manner. It enables the operator to generate and assign a different pseudonym to each requesting mobile user, equipped with a mobile station (MS), every time it wishes to access a remote Merchant or Service Provider, achieving anonymity and unlinkability. PRIPAY hides the real identity of MS from remote Merchants or Service Providers; but, at the same time it allows the operator to track the MS’s activities achieving traceability. It utilizes the established trust relationships between mobile users and networks operators, and employs public key cryptography to ensure authenticity, integrity and confidentiality of the assigned pseudonyms. Apart from privacy, PRIPAY constitutes an efficient micropayment solution that enables the operator to aggregate and charge all the user’s micropayments during a charging time period (i.e., monthly) within its mobile telephone bill. It is compatible with the employed technologies and minimizes the required typing and configuration effort by mobile users on the reduced-sized smartphones’ screens, facilitating m-commerce.

Pages: 207 to 212

Copyright: Copyright (c) IARIA, 2012

Publication date: November 18, 2012

Published in: conference

ISSN: 2163-9027

ISBN: 978-1-61208-231-8

Location: Lisbon, Portugal

Dates: from November 18, 2012 to November 23, 2012