How to Use window.crypto in Node.js

By  on  

I've been writing a bunch of jest tests recently for libraries that use the underlying window.crypto methods like getRandomValues() and window.crypto.subtle key management methods. One problem I run into is that the window.crypto object isn't available, so I need to shim it.

To use the window.crypto methods, you will need Node 15+. You can set the window.crypto by importing the crypto package and setting it on the global:

const crypto = require('crypto').webcrypto;

// Shims the crypto property onto global
global.crypto = crypto;

I really loathe creating mock functions for missing libraries in Node because they can lead to faulty positives on tests; I really appreciate webcrypto being available!

Recent Features

Incredible Demos

  • By
    Implementing Basic and Fancy Show/Hide in MooTools 1.2

    One of the great parts of MooTools is that the library itself allows for maximum flexibility within its provided classes. You can see evidence of this in the "Class" class' implement method. Using the implement method, you can add your own methods to...

  • By
    Telephone Link Protocol

    We've always been able to create links with protocols other than the usual HTTP, like mailto, skype, irc ,and more;  they're an excellent convenience to visitors.  With mobile phone browsers having become infinitely more usable, we can now extend that convenience to phone numbers: The tel...

Discussion

    Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!