tak napr. hned v tom linkovanom clanku sa pise: "For starters, Hurley suggests doubling or tripling the length of cryptographic keys. “Doubling the length of the encryption key is even more effective in a symmetric encryption scheme,” he said. “Quantum computers could use Grover’s Algorithm to break symmetric keys in quadratic time, but that’s not nearly fast enough to overcome a longer key."
ale imho to nie je nejaka obskurna informacia, je okolo toho uz cela veda. all in all plati, ze ked budu mat hackerkovia pouzitelne kvantove pocitace, budu ich mat pravdepodobne aj firmy, staty, institucie aby efektivne ochranili svoje data.
viac: https://en.wikipedia.org/wiki/Post-quantum_cryptography