Is it correct that letterlocking is a technique that requires quantum technology to replicate in the digital realm? Strong crypto only works if you know with certainty your private key is still private.
video of how it's done: <a href="https://www.youtube.com/watch?v=dzPE1MCgXxo" rel="nofollow">https://www.youtube.com/watch?v=dzPE1MCgXxo</a>
It's just a paywalled article on letter locking.<p><a href="https://en.m.wikipedia.org/wiki/Letterlocking" rel="nofollow">https://en.m.wikipedia.org/wiki/Letterlocking</a>