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by genmud
1589 days ago
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There are a bunch of options out there for doing this. Many ICs have built in key storage, but there are a few that are separate. There are some pros to using on micro key management, but one of the big cons is that many times the auth can be bypassed if you can overwrite or glitch the firmware. If I were concerned about counterfeit things, in an application like this, you would pre program each one with a unique key and everything would be tied to it. Firmware upgrades need to be validated, to download, you would need the key, run the software, key needs to sign something back… etc. https://www.microchip.com/en-us/product/ATSHA204A |
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