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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

“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

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

(Very) Basic Intro to Lattices in Cryptography

Intro to Lattice-Based Cryptography

Lattice-based cryptography, an important contender in the race for quantum-safe encryption, describes constructions of cryptographic primitives that involve mathematical lattices. Lattices as they relate to crypto have 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 give us hope … Read more

Shamir’s Secret Sharing Step-By-Step

Shamir's Secret Sharing Step By Step Library

Adi Shamir’s Secret Sharing is a cryptographic algorithm that allows distinct parties to jointly share ownership of a single secret by holding shares. The original secret can only be reconstructed by using a minimum number of shares, which allows the different parties to cooperate without the need to completely trust each other. Example Problem To … Read more

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 simple code and simple architecture. For example, to over-optimize for speed in JavaScript, we might write our for-loops backward to the detriment of readability. On other occasions, we may over-optimize architectural abstraction to the detriment … Read more

“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 language. 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

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 1970s, governments from around the world had near-total control of all cryptographic systems. … Read more

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