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Fpedga's avatar
Fpedga
Icon for New Contributor rankNew Contributor
3 years ago
Solved

Security level inconsistencies in AN 556 and Quartus 18

Hello, It looks like there is some inconsistencies about the security levels listed in the Application Note 556/Qcrypt tool and Quartus 18. This is what AN 556/Qcrypt says: The values [0:3] sp...
  • Ash_R_Intel's avatar
    Ash_R_Intel
    3 years ago

    Hi,

    The Quartus descriptions are the same as the app note, just they are shorter. For level 3, the configuration will not happen unless the fuse is blown up. This means that when level 3 is selected, the fuses are first checked. If already blown, then the configuration proceeds else not. Simply putting the security level as 3 does not blow up the fuses.


    Regards


Ash_R_Intel's avatar
Ash_R_Intel
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi,

The Quartus descriptions are the same as the app note, just they are shorter. For level 3, the configuration will not happen unless the fuse is blown up. This means that when level 3 is selected, the fuses are first checked. If already blown, then the configuration proceeds else not. Simply putting the security level as 3 does not blow up the fuses.


Regards