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Altera_Forum's avatar
Altera_Forum
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16 years ago

Stratix IV security anti tamper bit

Another simple one that wasn't wortyh raising and SR for.

I'm tasked with investigating design security for our Startix IV device.

Q. When using the non-volitile key aproach, if you set the tamper protection bit the Stratix FPGA will only accept an encrypted configuration file. I'm assuming here that this tamper protection bit, as is the case with the non-volitile key, cannot be unset. Would it defeat the object if it could?

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    According to the document

    10. configuration, design security, and

    remote system upgrades in stratix iv

    devices

    which I cannot link to here because I don't have 5 posts (this is very stupid) setting the tamper protection bit is irreversible. Search the Altera site for this document to read it.