Here’s a really fun design contest for Crypto Wedding Rings of Cory at BoingBoing.net.
Now it’s time that we turn to the Internet with a challenge: given these two matching rings, what crypto applications can you come up with? Could you use them to scramble passwords (possibly hashed with a key)? How about encoding messages for secret transmission? What additional common apparatus (say, different-sized coins) could you use to generate initialization vectors and increase the system’s security?
This is an open competition to be judged by Bruce “Applied Cryptography” Schneier and me — the winner gets a copy of Little Brother signed by both of us. Post your submissions to the comments or send them to email@example.com before Oct 1, 2008. Crytpo Wedding Ring