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Toronto, ON
June 25, 2007 to June 27, 2007
ISBN: 0-7695-2837-3
pp: 41
Ivan Osipkov , University of Minnesota, Minneapolis
Eugene Y. Vasserman , University of Minnesota, Minneapolis
Nicholas Hopper , University of Minnesota, Minneapolis
Yongdae Kim , University of Minnesota, Minneapolis
ABSTRACT
An electronic cash system allows users to withdraw coins, represented as bit strings, from a bank or broker, and spend those coins anonymously at participating mer- chants, so that the broker cannot link spent coins to the user who withdraws them. A variety of schemes with var- ious security properties have been proposed for this pur- pose, but because strings of bits are inherently copyable, they must all deal with the problem of double-spending. In this paper, we present an electronic cash scheme that in- troduces a new peer-to-peer system architecture to prevent double-spending without requiring an on-line trusted party or tamper-resistant software or hardware. The scheme is easy to implement, computationally efficient, and prov- ably secure. To demonstrate this, we report on a proof-of- concept implementation for Internet vendors along with a detailed complexity analysis and selected security proofs.
INDEX TERMS
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CITATION
Ivan Osipkov, Eugene Y. Vasserman, Nicholas Hopper, Yongdae Kim, "Combating Double-Spending Using Cooperative P2P Systems", ICDCS, 2007, 27th International Conference on Distributed Computing Systems (ICDCS '07), 27th International Conference on Distributed Computing Systems (ICDCS '07) 2007, pp. 41, doi:10.1109/ICDCS.2007.91
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