有没有一种方法来保护the firmware in the SPI flash from being read ?

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Mon, 2016-05-09 10:53
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ankitdaf
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有没有一种方法来保护the firmware in the SPI flash from being read ?

Hi

I am curious to know if there is some way in software that we can protect the firmware from being dumped / read out by sniffing / snooping tools

Best
Ankit

Keywords:
firmware
protection
Device:
DA14580
Mon, 2016-05-09 14:42
Joacimwe
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加入:2014-01-14 06:45
If you have a secondary boot

If you have a secondary boot loader, you can store an encryption key on OTP and store the image encrypted on your Flash.
When the device boots, the encrypted code is loaded from Flash and is decrypted.
That way the decrypted code stays in RAM which is much harder to access than Flash.

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