There are many directive principles in the electronic transaction protocol designing such as security, anonymity, non-repudiation, atomicity, fairness and efficiency.

电子交易协议的设计有安全性、匿名性、非否认性、原子性、公平性与效率等原则，这些原则在协议设计时具有指导作用。

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Secure Electronic Transaction protocol(SET) has guaranteed security problem in the electronic payment process through formulating standard and using cryptogram technology.

安全电子交易协议SET通过制定标准和采用各种密码技术手段，确保了电子支付过程中的安全问题。

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The popular protocol of the Secure Electronic Transaction(SET)discussed by this paper has the flaws of the goods atomic transactions and certified delivery atomic in transacting digital goods.

文章对现在流行的安全电子交易SET标准进行分析，指出SET协议存在不满足数字商品交易的原子性以及确认发送原子性等缺陷。

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Credit card companies are working with CyberCash and Netscape Communications to develop and implement the new Secure Electronic Transaction protocol for online credit card commerce.

CNN: Cash -- or E-Money?