[tptacek]

(a) All security does indeed have a time/value component.

(b) The word "current" in your sentence is inaccurate in its most generous interpretation. All mainstream secret-key cryptography is believed to resist quantum computers.

(c) If you're relying on potentially-susceptible number-theoretic encryption algorithms like RSA, you could at some point switch to lattice or code-based alternatives.

You should read "An Introduction To Post-Quantum Cryptography", by Daniel Bernstein.

[microb]

Very helpful. Thanks for the information.