I prepared this presentation to introduce others to the magical math that secures our digital lives. It is presented graphically so complex topics can be appreciated by the expert and layperson alike.

Presentation topics include:

How to achieve privacy when someone is always listening. (encryption)

How to decide on a secret when everyone is watching. (key agreement)

How to turn one random number into unlimited random numbers. (PRNGs)

How to speak in a way that's impossible to imitate. (digital signatures)

How to help protect data without possessing it. (secret sharing)

How to check proofs that you can't see. (zero knowledge proofs)

How to process data you don't have access to. (homomorphic encryption)