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YutaWakasugi's avatar
YutaWakasugi
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4 years ago
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How can I prevent AES key being overwritten by hacker in MAX10

Hi, I'm referring Intel® MAX® 10 FPGA Configuration User Guide. In my understanding, once we program AES key and turn on "Allow encrypted POF only" option, configuring CRAM through JTAG will be p...
YuanLi_S_Intel's avatar
YuanLi_S_Intel
Icon for Regular Contributor rankRegular Contributor
4 years ago

Hi,


Yes, you need to turn on jtag secure mode to prevent the access of JTAG by third party to do full erase on the device.


Regards,

Bruce


YutaWakasugi's avatar
YutaWakasugi
Icon for New Contributor rankNew Contributor
4 years ago

Hi,

Thank you for the quick response. Let me confirm.

Once JTAG secure mode is enabled, even the internal developer who knows AES key can't update CFM.
And if we want to update CFM, we need to implement internal logic to issue UNLOCK instruction to JTAG core like below
MAX10 JTAG Secure Unlock | Design Store for Intel® FPGAs
Is my understanding correct?

Thank you,
Wakasugi