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MVanM
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6 years ago

Can I use design security feature to decrypt different bitfiles encrypted with the same key

The manual for the design security feature states that it is possible to program an AES key into the FPGA in order to be able to decrypt encrypted bitfiles. When looking at the manual I see the follo...
MVanM's avatar
MVanM
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6 years ago

Hi MShafiq

Thanks for the initial explanation. An556 was the manual I was referring to and from which I took the command line example.

What makes a design 'specific' or 'new'? if I add an inverter somewhere in the design and regenerate configuration data (.sof) . Is that already different? So if I write the key to the fuses I can only ever decrypt that precise configuration down to the delays/routing etc?

Your answer already seems to indicate so. But hopefully I am mistaken. Because I would like to encrypt my bitfiles and be able to decrypt them. But hardware in the field should be able to decrypt possible future updates to the design if new functionality is added or possible bugfixes are made.

Regards,

Maarten