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A Micro-Payment Protocol based on PayWord for Multiple Payments  

김선형 (고려대학교 컴퓨터학과)
김태윤 (고려대학교 컴퓨터학과)
Publication Information
Journal of KIISE:Information Networking / v.30, no.2, 2003 , pp. 199-206 More about this Journal
Abstract
one of the representative micropayment protocols. The original PayWord system is designed for a user who generates paywords by performing hash chain operation for payment to an only designated vendor. In other words, a user has to create new hash chain values in order to establish commercial transactions with different vendors on the Internet. Therefore, we suggest an efficient scheme that is able to deal with business to different vendors by using only one hash chain operation to supplement this drawback. In this proposed system, a broker creates a new series of hash chain values along with a certificate for the user's certificate request. This certificate is signed by a broker to give authority enabling a user to generate hash chain values. hew hash chain values generated by a broker provide means to a user to do business with multiple vendors.
Keywords
public key cryptography; multiple payments; micro-payment; hash chain; PayWord;
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