[exabrial]

That is an interesting argument... Today we assume RSA is "Safe" because we can guess the maximum computational power of an attacker, and using a key size that makes cracking the key an unfavorable avenue for attack.

He's merely suggesting the same thing: use a really large key (terabit size), and since quantum computers are quite exotic, it will be an unfavorable avenue of attack.

[mtgx]

We can't even get people off SHA1 to SHA2 "because of lower performance." Somehow I doubt the "1 terrabit RSA key" would go over well with them.

I think there's a much better chance we move off to still slower, but not as slow, quantum-resistant crypto algorithms, than just much larger RSA keys.

[blacksmythe]

  >> We can't even get people off SHA1 to SHA2 "because of lower performance." Somehow I doubt the "1 terrabit RSA key" would go over well with them.

So apparently we are going to need quantum processors to generate encryption that is resistant to quantum processors.

[snakeanus]

GPG even disabled the generation of RSA keys over 4kib.