Top 10 Technical Go Interview Questions

Top 10 Go Interview Questions

Are you interviewing for a new Go developer position? Perhaps you are about to interview someone yourself? Let’s review some good questions to be familiar with, whether you are the interviewer or the interviewee. If you are interested in a more interactive way to review for a Go interview, try our Interview Prep – Go … Read more Top 10 Technical Go Interview Questions

Creating a Custom Tooltip Component in Vue

creating a custom tooltip component in vue

There are plenty of libraries out there that will have you up and running with a good tooltip solution in minutes. However, if you are like me, you are sick and tired of giant dependency trees that have the distinct possibility of breaking at any time. For that reason, we are going to build a … Read more Creating a Custom Tooltip Component in Vue

“Interview Prep – Golang” Course Released

Golang interview preparation

We just launched Interview Prep – Golang, a quick course for those looking to brush up on some Go quirks before walking into an interview. The course is a hands-on tutorial where you complete algorithms and data structures exercises, as well as answer common multiple-choice questions about the Go language. This interview preparation review stands … Read more “Interview Prep – Golang” Course Released

Bcrypt Step by Step

Bcrypt Step by Step

Bcrypt is a key derivation function, which can be thought of as a slow hash function. Its purpose is to slowly convert a piece of input data to a fixed-size, deterministic, and unpredictable output. A common use-case is to convert a password into an n-bit cryptographic key, which can then be used for safe authentication. … Read more Bcrypt Step by Step

(Very) Basic Intro to Lattices in Cryptography

Intro to Lattice-Based Cryptography

Lattice-based cryptography has been coming into the spotlight recently. In January 2019, Many of the semifinalists in the NIST post-quantum-cryptography competition were based on lattices. Lattice based cryptography has promising aspects that make it a contender for the basis of cryptographic security in a post-quantum world. What is a Lattice? According to Wikipedia, a lattice is … Read more (Very) Basic Intro to Lattices in Cryptography

Shamir’s Secret Sharing Step-By-Step

Shamir's Secret Sharing Step By Step Library

Adi Shamir’s Secret Sharing is an algorithm that allows participants to share ownership of a secret by distributing shares, which can be thought of as parts of a secret key. In order for someone to gain access to the original secret, a minimum number of shares (the threshold) must be used together. Example Problem To … Read more Shamir’s Secret Sharing Step-By-Step

Optimize For Simplicity First

KISS keep it simple stupid

We can’t optimize for everything in software engineering, so we need to start with something, and that something should be simplicity. For example, to over-optimize for speed in JavaScript, we might write our for-loops backwards to the detriment of readability. On other occasions, we may over-optimize architectural abstraction to the detriment of speed. I assert … Read more Optimize For Simplicity First

“Practical Cryptography” Course Released

qvault practical cryptogrpahy course

We just launched our new Practical Cryptography course, a code-in-the-browser tutorial where students build cryptographic functions in the Go programming langauge. Practical Cryptography stands out among online cryptography courses because it not only teaches crypto fundamentals, but it allows users to get hands-on experience building out the code. What’s Included? The course has four modules … Read more “Practical Cryptography” Course Released

They Who Control Encryption

They Who Control Encryption - 1984 Eye

If you’ve seen The Imitation Game, or studied computer science in school, you have likely heard of Enigma, Alan Turing, or some of the other advances in cryptography that took place during the Second World War. During this time and until the 1970’s, governments from around the world had near-total control of all cryptographic systems. … Read more They Who Control Encryption

Unexpected Printf Behavior in Go WASM – Nothing Prints

fmt.Printf doesn't do what you think it does WASM Go

While working on Qvault’s Go Playground, I came across a very strange error. The standard library’s fmt.Printf() function prints nothing to the console when called. Nothing. For those of you who are familiar with the function, when compiled to a “normal” executable fmt.Printf prints a formatted string to standard output. As per the official documentation, … Read more Unexpected Printf Behavior in Go WASM – Nothing Prints