@orva @mttaggart
(I realise this is an aside to the issue described by the researchers)

Could a decryption key be hardwired into an anti-fuse #FPGA ?
Am I right to say that would be resistant to bit flips? Or would three be required so they can vote on the true decryption key?
I can come up with other ways to solve this, and I'm sure if it's the only thing holding back encrypted control of satellites, other more erudite minds could come up with elegant solutions.

Obviously this is a one-time thing unless you're willing to send unprogrammed anti-fuse FPGAs up there to store new keys. I have read in the lay-press that flash FPGAs are also SEU resistant, but this stuff is really outside my wheelhouse.

Not to say it won't take a few decades to fix the problem; I only mean to suggest it can probably be fixed.

#space #SEU #bitFlip #FPGA #encryption #satellites #cryptography #postquantum