Cryptography is all the rage, and not without reason. It’s an important part of the security of all our communication. You hope your passwords are handled securely, and you assume anything you send to your bank in your online banking session is protected by encryption.

Getting your head around cryptography can be daunting. There’s a lot to learn. It’s a fast-evolving field within science and software engineering, and encryption protocols sometimes don’t even last a decade …