Which is best candidate out of nrf52840 & nRF52832 for BluetoothMesh n/w for security point of view ?

[vikrant8051]

> This is highlight of difference
> between #nrf52840 & #nRF52832.
> 
> #nRF52840 has additional feature of ARM CryptoCell. 
> 
> Is this make #nRF52840 more secure for
> #IoT or #BluetoothMesh application where security of network is more
> important ?

[endnode]

That said let me explain how searching on this forum and internet works: you put word "cryptocell" or "Trustzone" to "Search" window in the header of this page or/and to www.google.com search box. You will immediately get dozens of hits which will tell you what ARM Cryptocell is and what it itsn't, how it might enhance security of your product but also what it cannot do (= e.g. doean't provide any additional temper resistance to HW design of the chip). Here is one example.

In a nutshell it provides two features which might be a good foundation to improve security of ARM Cortex-M product:

• Crypto-processor which can provide HW accelerated performance to certain crypto primitives.
• Few hooks to memory controller which should allow you to prevent execution of certain ode at certain time.

(2/3)