This paper discussed the trade process on Internet, and provided a plan of tax-management based on SET protocol and CA.
探讨了网上交易的过程，给出了一个基于SET协议和CA认证的税收征管方案。
2
According to analysing the result, the encryption algorithms that SET protocol used has been already no longer safe, and has heavy influence the speed of the system and trade cost.
从分析结果来看，SET协议使用的加密算法已不再安全，而且对系统的速度和交易成本有较大的影响。
3
For primary server may become the bottle of the whole system, VCSR USES a concurrency control protocol based on voting, which also trade-off the network overhead.