The concept of off line electronic cash is briefly discussed, and a new electronic cash scheme based on RSA blind signature and quadratic residuosity is proposed.

讨论了离线电子现金的概念 ，并在 RSA盲签名和二次剩余的基础上提出了一种新的电子现金方案 。

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As electronic cash (E-cash) is one of the most attractive electronic payment forms, electronic cash system has attracted lots of researchers' attention at home and aboard.

电子现金是电子支付最有吸引力的方式之一，电子现金系统的研究受到了国内外很多学者的关注。

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In some parts of the US it is easy to set up in business as a fee-charging ATM provider, all you need is a few hundred dollars for a second-hand cash machine and an electronic link to the cash machine network.

BBC: NEWS | Business | UK 'risks' US-style bank charges

Besides stealing electronic cash, a thief could exploit stored data for mischief - or blackmail.

CNN: ASIANOW - Asiaweek

An electronic cash register could, for instance, be programmed to bounce out digital receipts using Gogobeans.

FORBES: Startup Gogobeans Sees More Opportunity In File-Sharing Than Mobile Payments