Nash van Gool (bekend als tamagotchi in php-nl) houd zijn talk over cryptography
Cryptography is one of those weird subjects, in that it is simultaneously really easy and really hard. We all use cryptography every day with next to no effort - whether we're hashing passwords or using HTTPS, cryptography is an integral part of what we do. When applying cryptography to our own code, we know not to roll our own, and to use readily made solutions. We also know to keep the private keys private and the secrets secret so the whole thing works as we intend it to. But do we really understand what we're doing and why we're doing it?
This talk aims to explain what cryptography is and does, where we apply it, where we should apply it, and some of the concerns that arise in doing so. It will do this in a little less detail and a little more practicality. Expect to hear about data at rest vs data in transit, symmetric vs asymmetric cryptography and why to use one over the other, why it's so important that we never ever ever roll our own crypto, and what kinds of mistakes we can make even when we don't.