Update SHE-key debugger protected

[ale_di_vi]

Hello,

In our company we are working on a project having an S32K1xx microcontroller, using the CSEc module.

We would like to update one of the SHE-keys. All of them have the DEBUG_PROT flag set. The question is: is it possible to update the key via CMD_LOAD_KEY while a debugger is connected to the device?

Thank you in advance.

[VaneB]

Hi @ale_di_vi 

According to the information we have, one of the functions affected by the security bits is CMD_LOAD_KEY, specifly is affected by the Write Protection Flag (WRITE_PROT), Boot Protection Flag (BOOT_PROT), Debugger Usage Protection Flag (DEBUG_PROT) and Wildcard Protection Flag (WILDCARD).

As far as we understand, you will not be able to update the Key when DEBUG_PROT is set.

Please refer to the following image.

B.R.

VaneB

[ale_di_vi]

Hi @VaneB,

Thank you for your response. In which document can I find this table?

[VaneB]

Hi @ale_di_vi 

Please check the content at the following link. There should be information related to this topic which you might find useful.

Specification of Secure Hardware Extensions

[MohamedKallouchi]

When is the debugger protection flag set?

Is it possible to remove the debugger protection flag? because i want to remove all the keys using the debugger.