Other NXP ProductsのトピックMemory update Protocol / update SHE KEY

Memory update Protocol / update SHE KEY

Mahendran — Wed, 02 Feb 2022 18:06:36 GMT

Hello Team,

We have requirement to use Key id 1 for Master ECU key and key id 4 for Kmac. I have configured diagnostic job to update the Key Slot in SHE Module.

I am struggling to generate M1.. M5 value for AES128 algo to update key for the development purpose.

Could you please let me know is there any standard tool or script available to generate M1, M2, M3, M4, M5 values for the Key for AES 128 algorithm.

Best regards,

Mahendran

Re: Memory update Protocol / update SHE KEY

nxf45548 — Wed, 02 Feb 2022 19:36:46 GMT

@Mahendran,

To provide you with better support, can you please let us know the NXP part number that you are using?
Are you using a Kinetis, S32K, iMx?

Regards,

Susi

Re: Memory update Protocol / update SHE KEY

KaleRushikesh — Sun, 08 Mar 2026 02:48:16 GMT

I am also struggling with calculation of M1,M2,M3,M4 and M5 computation. I am working with S32k3xx development board.
I have one question, as we need ECU Master key to update any SHE-Key, but what is the default ECU master Key? And If i want to update ECU master key itself what will be the values for CID', AuthID, Authentication key value(K_AuthID).

Re: Memory update Protocol / update SHE KEY

KaleRushikesh — Tue, 10 Mar 2026 09:24:24 GMT

Any updates