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by raron 537 days ago
Some of these features makes it harder to (physically) probe the internal parts of the chip and read out secret values:

https://en.wikipedia.org/wiki/Secure_cryptoprocessor#Feature...

These things make it harder to break into the internals of the chip regardless of they being kept secret, so I wouldn't call it security by obscurity. I'm not even sure you can apply that principle to physical security.