“Public-key cryptography is not a panacea. It's a tool, and like any tool, it can be misused.”— Daniel J. Bernstein
“Before public key cryptography, if you wanted to send a secret message to someone, you had to first agree on a secret key. This was a major bottleneck.”— Ralph Merkle
“The goal is not to make something that's unbreakable. The goal is to make something that's too expensive to break.”— Daniel J. Bernstein
“The magic of public-key cryptography is that you can have a system where you can send a message that only one person can read, but you don't have to have any prior arrangement with that person.”— Whitfield Diffie
“A digital signature is a way of proving that a message came from a particular person, and that it hasn't been tampered with.”— Ralph Merkle
“I used codes that were actually used historically, and I developed some of my own.”— James Sanborn