Comment DONT PANIC! (Quantum computer size & crypto) (Score 1) 228
DONT PANIC!
Today, quantum computers are *very* limited in size. The number 15 has been succesfully factored into the primes 3 and 5.
There is no really promising ways to produce large amounts (~1000) qbits. I strongly suspect that the difficulty in generating qbits is (at least) exponential in the amount of qbits to produce.
qbits cannot be composed after they creation (at least with known physics), so I am definatly *not* holding my breath for quantum computers to break RSA-2048 or AES256.
When RSA is broken (when it takes less than a few hundred years on average to find a secret key), we already have multiple other crypto-systems ready. Elliptic versions of RSA are *already* part of standard-implementations in browsers and they shift the amount of qbits required with several orders of magnitude (with known math).