Segments code into three protected segments. It looks like they did this specifically to meet Automotive requirements, but I see it getting a good reception over a broad range of applications.
Of course, I added a pretty picture because, well, that's the kind of guy I am...
Regards,
Bill Giovino Executive Editor
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Interesting, but hardly new. Updated to account for current needs, though.
Here's an interesting thought: Microchip says all the sections can be updated using their encryption libs; when that's cracked (we know it's only a matter of time), will Microchip then tout their new, 'more secure' version?
;) Cheers
PeteS
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Sounds good on first scan, but with this scheme, how do they handle version control and debug ?.
Or, do those problems just quietly vanish in the Microchip world :)
Starts to sounds like 'windows on a chip', with lots of scope for "not our problem, that's in the Boot Segment" - and a uC version of DLL hell, all on one die!
-jg
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Typically, to crack things like this, there needs to be some info leaked from the inside the company, like the 68HC05 reset pin hack years ago. Other times, you've got to de-cap the part and start playing with lasers and microscopes, like Samsung used to do with National Semiconductor's GALs oh-so long ago.
Nowadays, it's easy for semiconductor manufacturers to make things difficult enough so that it's financially, and legally, unfeasible to break the encryption - just look at SmartCards.
Bill Giovino Executive Editor
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