1/ It’s Saturday night. I’m a cryptographer. Let’s have a chat about quantum computers and crypto.
Google didn’t just achieve quantum computing and even if they advanced the state of the art, I very much doubt that Google has achieved “quantum supremacy” in a meaningful way.
Google didn’t just achieve quantum computing and even if they advanced the state of the art, I very much doubt that Google has achieved “quantum supremacy” in a meaningful way.
2/ With that said, even if you do get quantum computers, to say that “no code is uncrackable” is simply not true.
Yes, of the crypto algorithms we use can be attacked once general purpose quantum computers with a sufficient number of qubits are available.
Yes, of the crypto algorithms we use can be attacked once general purpose quantum computers with a sufficient number of qubits are available.
3/ But we aren’t anywhere near that and I don’t see getting there soon. There are very hard problems we need to tackle first, involving quantum decoherence and interference.
This is important because we have quantum resistant algorithms and there is active research continues.
This is important because we have quantum resistant algorithms and there is active research continues.
4/ Sunday morning follow-up: it turns out @isislovecruft tweeted about this issue last night, going a lot deeper than I did; for more information, you should take a minute to read this thread:
