One thing that bothers me about most of these algorithms is how conceptually difficult they are for me to understand. I don't have that strong of a background in cryptography but there is something special about how with RSA you can do it at a small scale by hand. With very limited notes I can explain to a group of high schoolers almost exactly how this vital part of encryption functions and even vulnerabilities in it (small exponent values, etc). While rolling your own crypto is bad, with a bit of work I'd expect almost any programmer to be able to implement RSA without too much difficulty.
I'm not sure how important being able to explain encryption algorithms in detail to high school students is, but I'll definitely be sad when RSA and other non-quantum resistant algorithms join the likes of the enigma machine and exist for demonstration process only. I'm hopeful in time less crypto minded people (like me) will better understand module learning with errors or lattice based cryptography and maybe we'll get better at explaining it. It would be a shame if even more of cryptography into an unintelligible black box to eke out performance gains.
I'm not sure how important being able to explain encryption algorithms in detail to high school students is, but I'll definitely be sad when RSA and other non-quantum resistant algorithms join the likes of the enigma machine and exist for demonstration process only. I'm hopeful in time less crypto minded people (like me) will better understand module learning with errors or lattice based cryptography and maybe we'll get better at explaining it. It would be a shame if even more of cryptography into an unintelligible black box to eke out performance gains.