Dynamic multi-application card (DMAC) leads the trend of the development in smart card. It can contain multiple applications with the capability of using different applications in different fields.
动态多应用智能卡是智能卡的发展趋势，它使一张卡片上可以同时容纳多个应用，在不同的场合使用不同的应用。
With the solution, the dynamic download, refreshment and deletion in Multi-application card system can be accomplished safely.
通过此方案的实施，安全地实现了“一卡多用”系统中应用的动态下载、更新和删除。
Finally the security of this system wais discussed. With the solution, the dynamic download, refreshment and deletion in Multi-application card system can be accomplished safely.
通过此方案的实施，安全地实现了“一卡多用”系统中应用的动态下载、更新和删除。
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