Takeshi Nagayoshi

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A currency exchange system is introduced for a multi-currency electronic money trial, in which smartcard-based electronic moneys (two currencies) are circulated over the Internet. Considering the need to support our existing single currency electronic money protocol, the exchange method proposed herein offers fairness between untrusted parties based on the(More)
Electronic commerce has attracted much attention with the development of security technology on the Internet. We established an electronic commerce system that is based on NTT electronic money technology and is connected with the Japanese banking system. It has been operated in the InternetCash trial step2 since April 1999. The aim of this trial is to(More)
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