PROCESSOR-SDK-J721S2: SMPK key provisioning

KISHORI JADHAV

Part Number: PROCESSOR-SDK-J721S2

0 Keerthy J over 2 years ago

KISHORI JADHAV said:
SMPK, BMPK - Unique for each Hardware device?

No. It is common for all the samples that need to be booted with the same boot binaries.

KISHORI JADHAV said:
Is AES key unique?

No.

- Keerthy

0 KISHORI JADHAV over 2 years ago

Hi Keerthy,

The AES key(KWKEK) is the temporary key used in SMPK provisioning. I hope you have answered "No" to my query considering that. Please confirm.

+1 Keerthy J over 2 years ago in reply to KISHORI JADHAV

OEM generates a random 256-bit number to be used as an AES encryption key for protecting the OTP data.

The same binary with the AES encryption key is used. So It is NOT a unique key.

- Keerthy

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