2339011_en-US

[#1]

[SAF85xx] GMAC generation results by HSE_FW and Python

This question is following topic from linked below.

[SAF85xx] GMAC Generation Tool/Example

Customer checked GMAC generation, add IVT_AUTH = 1 and expected boot-up SAF85xx after POR. But still GMAC generated value is deviated from attached Python code.

Would it be possible to double check for attached script and the result as screehshot?

BSSM: ExpiredHSE_FWRe: [SAF85xx] GMAC generation results by HSE_FW and Python

Hi @HiroshiHirashima ,

I am working on it. I will provide response soon.

Meanwhile, could you please confirm whether the GMAC generated by the HSE using the service HSE_SRV_ID_BOOT_DATA_IMAGE_SIGN is also being verified by the HSE using the service  HSE_SRV_ID_BOOT_DATA_IMAGE_VERIFY ?

Regards,
Himanshu Kumar

Re: [SAF85xx] GMAC generation results by HSE_FW and Python

Yes.

Customer uses "HSE_SRV_ID_BOOT_DATA_IMAGE_SIGN" for signature and "HSE_SRV_ID_BOOT_DATA_IMAGE_VERIFY" for verify.

Re: [SAF85xx] GMAC generation results by HSE_FW and Python

Hi @HiroshiHirashima ,

Could you please confirm whether, when the customer verifies the GMAC generated by the service HSE_SRV_ID_BOOT_DATA_IMAGE_SIGN using the service HSE_SRV_ID_BOOT_DATA_IMAGE_VERIFY, the response indicates a successful verification or if the HSE reports it as not verified?

We also have not received any confirmation from the Sales team regarding the BSSM for Denso Corp, so we are currently waiting for their update .

Regards,
Himanshu Kumar

Re: [SAF85xx] GMAC generation results by HSE_FW and Python

Hello @HiroshiHirashima ,

Since there have been no follow-up questions and 7 business days have passed since the last update, we are/I am closing this case. In case of any further queries, please re-open the case or create a new one for support.

Thanks,

Himanshu Kumar