Propose an escrowed electronic cash system by electronic wallet.

●提出了利用电子钱包的托管电子现金系统.

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With analyzing electronic cash and electronic wallet, this paper describes an electronic commerce model and protocol.

该文在分析电子现金和电子钱包的基础上,提出了一种新的基于电子现金的电子商务安全模型与协议.

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