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LP-AM263P: Key Storing

Sravya Kalluri
Prodigy 145 points
Part Number: LP-AM263P


Tool/software:

Hi Team,

I need some information on how to store a key apart from using OTP.
In fact, it’s not a key — it's a 32-byte seed value.

Regards,
K. Sravya

  • 0
    TI__Guru* 87096 points

    Hi Sravya,

    Keyring would be an option here. You could encrypt this key with the Root of Trust (RoT) Symmetric keys and sign the certificate using RoT assymetric key and send the certificate over to the HSM core, where HSM stores these keys onto the HSM RAM.

    This region is volatile, so the keys are lost and should be rewritten to the HSM upon a power cycle.

    If you want it to be non-volatile, then in the efuse, there is 1664 bit extended otp array for customer usage to which you can efuse this seed value.

    Thanks and Regards,

    Nikhil Dasan

  • 0 in reply to Nikhil Dasan
    Prodigy 145 points

    Hi Nikhil,

    I’m considering storing the seed value in a non-volatile way, but without using eFUSE/OTP.
    Is there any other method for storing the seed value?

    Regards,
    K. Sravya



  • 0 in reply to Sravya Kalluri
    TI__Guru* 87096 points

    Hi Sravya,

    Sorry, eFuse is the only Non-Volatile memory available on this device.

    Thanks and Regards,

    Nikhil Dasan