NIST report says we urgently need more work in post-quantum cryptography

In a  report from NIST, there are a number of possible approaches for post-quantum encryption.  These include lattice-based cryptography and multivariate polynomial cryptography, but they are all attempts to replicate the usability of modern cryptography.  A new approach is needed so that it can work over modern computer infrastructure, and it must not require a quantum computer in order to work.  Therefore, “quantum encryption” is not a form of post-quantum cryptography.  If we use quantum entanglement to transmit information, or encrypt it with a quantum-speed algorithm, we’ve done a very impressive thing with no relevance to the average internet user.  We need to come up with better ideas, otherwise encryption will be easily broken.