There are post-quantum cryptographic algorithms already, eg. https://en.wikipedia.org/wiki/Supersingular_isogeny_key_exchange https://en.wikipedia.org/wiki/Supe

There are post-quantum cryptographic algorithms already, eg. https://en.wikipedia.org/wiki/Supersingular_isogeny_key_exchange https://en.wikipedia.org/wiki/Supersingular_isogeny_key_exch...