Programming of non-volatile root key (.qky) on Stratix 10 1SX280LN3 fails (code 0x3FF)

Question

Hello,I am trying to enable authentication on a Stratix 10 SoC (1SX280LN3), and religiously following the security guide from Intel. The first steps involve the generation of private and public .pem files, and the generation of a root key file (.qky).The .qky file must then be programmed on the device and this is when things go sideways.Programming the .qky in a volatile fashion works without an issue, but when programming it in a non-volatile fashion, I get an error from Quartus Programmer: code 0x3FF. I cannot find any reference anywhere about what that means.I have attached the screenshot in attachment.Is there any setting to enable the non-volatile programming of the .qky, other than enabling the option in Quartus Programmer?Many thanks for any insight!Bertrand

farabi · Answer

Hello, The non-volatile key is permanent. Have you somehow ever programmed the non-volatile key into the device? You can't reprogrammed the non-volatile key if already programmed. regards,Farabi

beb · Answer

Hello,No I have never programmed a non-volatile key. It's the first time that I am trying.My current firmware is not signed and works normally, therefore there is no key programmed on the device.Thank you!Bertrand