使用 WS-Security，信用卡信息可以以加密的格式传递，并且仅能由发出付款确认的银行系统解密。

Using WS-Security, the credit card information can instead be sent in encrypted form that can be decrypted only by the banking system that issues the payment confirmation.

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提出一种新的电子现金方案，利用基于身份的加密技术，实现能保障收款方如期收款的延时付款功能。

This paper proposes a new e-cash scheme, which supports delayed payment. The new function is implemented by ID-based encryption technology.

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