Using PKI in an embedded system

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Ever wonder how PKI works in an embedded system?  Its basically a chain of trust that is established between an anchor of trust (in this image, its the "Root") and all of the widgets in the chain that have been digitally signed or authorized to be in the chain.  The ECCC508A depicted in the image just one widget in potentially millions of connected devices in an ecosystem.  

 

Steve Jarmusz