Matching Oblivious Transfer: How to Exchange Valuable Data

Shin'ichiro MATSUO  Wakaha OGATA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E86-A   No.1   pp.189-193
Publication Date: 2003/01/01
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Cryptography and Information Security)
oblivious transfer,  multiparty protocol,  electronic market and matching,  

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When people want to exchange digital money and digital data over the Internet like a market, privacy for the participant's behavior, security against malicious users and fairness for matching must be assured. We propose a new concept "Matching Oblivious Transfer," which can match valuable digital data with hiding the price suggested by participant and securely deliver the digital data to the matched participant. Then we propose a protocol for some general matching rules in which once a participant sends an order to the market, no interaction between each participant and the market is needed.