具有安全功能的数据加卸载卡

Data loading and unloading card with the security function

在数据加卸载系统上,为了防止对数据的非法操作,需要数据加卸载卡具备一定的安全验证功能。本文在分析USB批量传输协议的基础上,设计了数据卡的固件程序状态机,在固件程序中增加具有验证功能的自定义CBWCB命令来实现数据卡安全验证功能。最后通过数据加卸载系统完成对数据加卸载卡的安全验证实验,证明该方法简单、可靠。

In the data loading and unloading system, in order to prevent illegal operations on the data, the data loading and unloading cards need certain security measures. Based on the analysis of the USB bulk transfer protocol, a data card firmware state machine is designed, and the firmware adds custom CBWCB commands to verify the data card＇s security features. At last, through the security validation experiment by using data loading and unloading system, it shows that this method is simple and reliable.