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Root of Trust implementation – Connected devices with authentication requirements need a root of trust in the system architecture. This is particularly important for devices that can be updated over the air. In a system with TrustZone technology, code…

Hi,

I am new to the ARM TrustZone Architecture.

I am confused that who sets the NS bit in the SCR register, is it the processor itself set bit to 1 when it enters the EL3 mode, or it is the Monitor mode code is setting the NS bit ?

Maybe I am asking…

From "ARM v8-M Architecture Reference Manual", about IDAU I see:

The IDAU can provide the following Security attribution information for an address:
• Security attribution exempt. This specifies that the address is exempt from security attribution…

Hi guys,

I found in armv8-arch ref manual that when PRIS bit in the AIRCR is set, the priority of non-secure handler is mapped to the bottom of the priority range. So I did an experiment.

I configured two exceptions, systick and svc. The priority are 2…

Hello All,

Requirements:

1. Write a secure program where some part of the program resides in a secure zone.
2. Code instrumentation: I would like to instrument the compiled binary that runs on the device 

I could find some options, however, I cannot differentiate…