I am looking at implementing some security features on a NRF52832. I am especially interesting in a Secure Boot process. Looking at the product specifications, I noticed the NRF52832 does not seem to have a lot of the features available that the NRF52840 does related to security. The NRF52840 mentions the "ARM TrustZone Cryptocell 310 security subsystem" and that it is “Secure boot ready”.
The NRF52832 product specification does not mention these features. Are they simply just not at all available and never will be? I thought the main difference was just Flash and RAM memory size between the 2 controllers but they have the same Cortex M4 processor, is that not the case?
Is something like “secure boot” simply not possible on the NRF52832? I also have a crypto chip connected to the NRF52832, that has things like lockable EEPROM memory and standard hardware accelerated cryptography features, AES, SHA-256, etc. Could this be utilized with the NRF52832 to implement a secure boot? Any help would be appreciated.
