@kryptonaut,

Enjoyed your post.

And yes, quantum computers will wreak havoc on today's widely used cryptographic security (e.g. SHA256, RSA, etc.).

RE: Fighting Quantum with Quantum

In addition to the popular BB84 and E91 Quantum Cryptography protocols - already used in a few places around the world, most notably in Japan; using photons as qbits , there are several others.

Also, you might like:

https://steemit.com/science/@jaichai/ijch-comment-reply-to-earthcustodians-don-t-fear-the-quantum-computing-reaper

Upvoted and continuing to follow you.

Namaste, my friend.

JaiChai

Parting Shot -