Does nRF51822 have ARM TrustZone?

[r1cky]

If not, what Nordic chips have this feature?

[Jørgen Holmefjord]

Hi,

The nRF51822 does not have ARM TrustZone, neither does any of the other Nordic chips currently available.

The nRF52840 does have a ARM TrustZone Cryptocell, but no ARM TrustZone.

Best regards,

Jørgen

[alireza sadeghpour]

I think it does not provide a built-in protected space for storing credential keys - it just relies on ACL to protect a region of flash where we can store keys. My question is: does that really provide any meaningful level of security? Or we still need to have a specific secure element chip to bring maximum protection?