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关于DM6437程序加密的问题



当把工程下载到flash后,产品化后,防止别人窃取程序,在DM6437上有什么方案可以实现呢,比如在F28系列会有一块特定的密码存储区,DM6437没有,那6437有没有唯一的ID,我看了开发板的(原厂)flash,二者都没有唯一ID,那是不是意味着若想加密必须通过外接单片机实现?望回答,谢谢