Model checking a server - side micro payment protocol

Chaudhary, Kaylash C. and Fehnker, Ansgar (2015) Model checking a server - side micro payment protocol. In: Formal Methods for Industrial Critical Systems. Lecture Notes in Computer Science, 9128 . Springer International Publishing, Switzerland, pp. 96-110. ISBN 978-3-319-19457-8

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Abstract

Many virtual payment systems are available on the world wide web for micropayment, and as they deal with money, correctness is important. One such payment system is Netpay. This paper examines the server-side version of the Netpay protocol and provides its formalization as a CSP model. The PAT model checker is used to prove three properties essential for correctness: impossibility of double spending, validity of an ecoin during the execution and the absence of deadlock. We prove that the protocol is executing according to its description based on the assumption that the customers and vendors are cooperative. This is a very strong assumption for system built to prevent abuse, but further analysis suggests that without it the protocol does no longer guarantee all correctness properties.

Item Type:	Book Chapter
Additional Information:	DOI: 10.1007/978-3-319-19458-5_7 This paper was presented at 20th International Workshop, FMICS 2015 Oslo, Norway, June 22-23, 2015 Proceedings
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:	Faculty of Science, Technology and Environment (FSTE) > School of Computing, Information and Mathematical Sciences
Depositing User:	Kaylash Chaudhary
Date Deposited:	04 May 2016 22:47
Last Modified:	24 May 2016 00:28
URI:	http://repository.usp.ac.fj/id/eprint/8849

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