#1121: Identity explain

Cueball: Hey, I lost the server password. What is it, again?

Megan: It’s— …Wait. How do I know it’s really you?

Cueball: Ooh, good question! I bet we can construct a cool proof-of-identity protocol. I’ll start by picking two random—

Megan: Oh good; it’s you. Here’s the password…

Cueball: NO!