In past projects at Qvault we had an application that typically ran with ~2GB in memory at any given time. By simply changing the order of some uint variables we managed to drop the memory usage to less than 1.4GB. The vast majority of this allocated memory is due to an enormous slice of stats … Read more Saving a Third of Our Memory by Re-ordering Go Struct Fields
HMACs and MACs are authentication codes and are often the backbone of JWT authentication systems. Let’s take a look at how they work. MAC – Message Authentication Code MACs are exactly what they sound like; small codes that allow receivers of messages to know who the sender was (authentication). A MAC code is calculated by … Read more HMAC and MACs – The Inner Workings of JWTs
The age of information is not what we all hoped it would be. We successfully digitized the majority of human knowledge, and we even made it freely accessible to most. Now the problem is different, we have too much information. Answers to most questions can be found in thousands of distinct places online, and the … Read more Your Parent’s Internet – Solving the Misinformation Problem
The goal of this tutorial will be to build a robust video (or music) streaming API using Node JS. Don’t worry, its surprisingly easy since we will be utilizing a modern protocol, HTTP Live Streaming, or HLS. Why use HLS for video streaming? HLS allows us to serve large media files as many smaller files. … Read more HLS Video Streaming with Node.JS – A Tutorial
PGP, or its open-source alternative, GPG, is a program used to encrypt data such that only an authorized party can decrypt it. In this introduction, we will cover its use-cases and a high-level overview of the algorithms involved. Both programs (and others) adhere to the OpenPGP protocol. Because it is an implementation agnostic protocol, people … Read more (Very) Basic Intro to PGP (GPG)
Scrypt is a slow-by-design hash function or more accurately, a KDF function. Its purpose is to take some input data, and create a fingerprint of that data, but to do it very slowly. A common use-case is to take a password and create an n-bit private key, which is much longer and more secure. Here … Read more (Very) Basic Intro to the Scrypt Hash
Users love convenience. If your goal is to make it easy for users to register with your app or website, then implementing the “Sign in with Google” option should be at the top of your priority list. If you are like me, then you may find Google’s documentation on the subject to be lackluster at … Read more Authenticate Users with “Sign In With Google” in Golang
Elliptic curve cryptography is an efficient modern approach to public-key cryptosystems. In this introduction, our goal will be to focus on the high-level principles of what makes ECC work. We will omit implementation details and mathematical proofs, we can save those for another article. What It’s For? A common use of ECC is to encrypt data … Read more (Very) Basic Intro To Elliptic Curve Cryptography
Custom toggle switches are a pain to code from scratch. So many lines for such a simple UI widget! In this quick tutorial, we will learn how to build a toggle switch in Vue.js, and it will be a fully encapsulated component! The component we are building is used currently on Qvault’s login page. Go … Read more How to Create a Custom Toggle Switch Component in Vue.js
Rust and Go are two huge successes in the realm of modern programming language development. The two languages compete in terms of backend web development… and it’s a fierce competition. For example, the popular communication app Discord just started swapping out Go services for Rust to boost performance. Both languages are new, have growing communities, … Read more Rust vs Go in Backend Web Development
