🐢 Node.js

🌟 The different core modules

Crypto

The Crypto module (or more recently Web crypto which is the version with Web-compatible API) is a module that will allow you to perform a set of operations related to the world of cryptography.

I’m not particularly comfortable with all of this, but as developers we still have fairly frequent needs such as generating a SHA256 string or that kind of thing (for signing a file for example).

crypto.createHash("sha256").update("hello").digest("hex");

Obviously I do not recommend that you manage a password encryption yourself because it is very often the best way to do stupid things (use a lib like Argon2 instead). If you want to know why I recommend you go read the following article.

Personally, I also often use the crypto module to generate random values:

const crypto = require("crypto");

console.log(crypto.randomBytes(16).toString("hex"));
// 1a68967e44d1c1ad187f003ab95f3cd1

console.log(crypto.randomInt(100));
// 94

console.log(crypto.randomUUID());
// 7ea8c00a-cd01-442f-8011-56037e527b5f

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