The model structure of SET protocol is optimized, the transaction process is improved, and the transaction security is strengthened.

它优化了SET协议的模型结构，完善了交易流程，增强了交易的安全性。

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Encryption technology, security system and security protocols are the major supports for present business transaction, while security protocol usually adopts SSL and SET protocol.

而商务交易安全主要是通过加密技术、安全机制、安全协议进行保证的。电子商务中的安全协议主要采用SSL协议和SET协议。

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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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