I think the color mixing analogy is probably the best. Probably since it's an actual implementation of Diffie-Hellman. The fact that it is so generic is pretty

I think the color mixing analogy is probably the best. Probably since it's an actual implementation of Diffie-Hellman. The fact that it is so generic is pretty cool. I also like the prime number factorization explanation. It's a little harder to understand, but it's actually used in RSA which is pretty cool.