The General Pay-Word: A Micro-payment Scheme Based on n-dimension One-way Hash Chain

Authors:
Iuon-Chang Lin;Min-Shiang Hwang;Chin-Chen Chang
Affiliations:
Department of Management Information System, National Chung Hsing University, Taichung, Taiwan, R.O.C 402;Department of Management Information System, National Chung Hsing University, Taichung, Taiwan, R.O.C 402;Department of Computer Science and Information Engineering, National Chung Cheng University, Chaiyi, Taiwan, R.O.C 621
Venue:
Designs, Codes and Cryptography
Year:
2005

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Abstract

In this paper, we extend the Pay-Word micro-payment scheme using the 1-dimension one-way hash chain to generate an n-dimension one-way hash chain. According to the system requirements, a user can flexibly choose the number of dimensions to gain the best time/space trade off. The proposed scheme is based on an n-dimension one-way hash chain, which can improve the efficiency of deriving the pay-words but also increase the temporary storage space. In addition, this scheme is fit for real-time payment.