随着电子商务热，实体店铺随之面临倒闭关门风险，大学生利用校园淘宝创业也出现了一些新的问题。
With the heat of electronic commerce, the entity shop closed risks, then students using campus taobao business also appeared some new problems.
研究如何在校园卡的基础上建立电子商务在线支付体系成为一项很有意义的工作，但国内这方面的研究与应用略显不足。
It is meaningful for us to do research on payment system based on campus card. But the research of this aspect in our country is few.
随着国内高校校园卡系统的逐步建立，使得电子商务的应用环境在校园中逐渐成熟。
Along with the construction of campus card in universities of China, the environment of E-commerce is also established in campus.
并在此基础之上，把运用于诸如电子商务等其他领域中的数字签名技术引入“校园一卡通”系统，设计出了校园CPU卡的密钥管理系统。
After do this, the paper introduce the digital signature which used in other domain such ase-commerce into "campus Cards System" then design the campus CPU card key management.
并在此基础之上，把运用于诸如电子商务等其他领域中的数字签名技术引入“校园一卡通”系统，设计出了校园CPU卡的密钥管理系统。
After do this, the paper introduce the digital signature which used in other domain such ase-commerce into "campus Cards System" then design the campus CPU card key management.
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