S32K中的主题 Re: Update SHE-key debugger protected

Update SHE-key debugger protected

ale_di_vi — Wed, 18 Oct 2023 07:49:08 GMT

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.

Re: Update SHE-key debugger protected

VaneB — Thu, 19 Oct 2023 18:41:44 GMT

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