模型采用密码支撑层、安全防护与可靠性支持层保证系统不同层面的安全性与可靠性。
This model USES Encryption Support Layer, security Protection and Reliability Support Layer to guarantee the system security and stability in different aspects.
提出了通过在售电系统与计量系统上增加安全防护的方法增强IC卡电能表的安全性，从而避免了单纯提高IC卡本身的安全性带来的系统成本的问题。
The strategy is based on the meter and the manage system but not the IC card itself, so it can avoid the cost rise of the system.
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