From the course: Complete Guide to Application Security

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Cryptography fundamentals

Cryptography fundamentals

From the course: Complete Guide to Application Security

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Cryptography fundamentals

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- [Instructor] Application developers use cryptography to ensure that our secrets remain secret. They use it to protect data at rest, data in transit, and even data in use, which means in memory, but there are nuances to cryptography that every application security professionals should strive to understand. At its core, cryptography is all about protecting data, whether it's sitting on a hard drive, zooming across the internet, or even hanging out in your computer's memory. Essentially, we're talking about transforming readable information, what we call plain text, into something completely unusable by anyone who should not have access to that data. Think of it like scrambling a secret message so only the person with the decoder ring can read it. There are a few different ways to use cryptography, and I want to cover a few that you'll definitely bump into in your day-to-day work. First, let's talk about asymmetric or public key cryptography. Imagine you have two keys, a public key…

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