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]

ARM Cryptocell or Trustzone has pretty much nothing to do with BT SIG mesh network specification if this is your question. CC310 can help you to achieve two things: having certain crypo schemes with better performance (= computing crypto operations faster) and potentially design your FW securely (thanks to "privileged" mode when you can restrict which code will run on MCU at what moment - exclusively). However you can see implementations of BT SIG mesh on common ARM Cortex-M chips without any specific security features (or even on C51 8-bit clones) so it doesn't harm the functionality of "mash" itself. Btw. you haven't mentioned what mesh architecture/specification you are talking about so I assume you talk about BT SIG standardized mesh network but there are many others... again it indicates to me that you are more going for buzzwords and stickers then knowing exactly what you need.