when they really get there, all current public crypto is just broken. Symmetric is just weakened; basically you need to double the keysize. And there's prob a b

when they really get there, all current public crypto is just broken. Symmetric is just weakened; basically you need to double the keysize. And there's prob a backlog of messages those actors can then decrypt. Besides that, everyone needs to move to post-quantum public key cryptographic algorithms. Seems there's usable methods already now, except the signatures will be enormous untill some other, better post-quantum methods are proven safe. ~~Here's an overview of the SOTA there from 32c3 ; I was surprised how usable it already seems: https://www.youtube.com/watch?v=424LHQQB2DE https://www.youtube.com/watch?v=424LHQQB2DE ~~ EDIT: shit, sry that's not the correct video; I'll find it in a sec, I hope.. Or, if you're a bank or a state or otherwise can have a direct 1hop link to your communication partner, you can just use quantum cryptography for extra, physical assurances.