How do I generate a key pair with Web Crypto and access its keys in a Firefox AddOn?

Question

I'd like to call window.crypto.subtle.generateKey in my Firefox AddOn. Since I can not access window in main.js I create a page-worker with a content script :

var self = require('sdk/self');
var cryptoScript = require('sdk/page-worker').Page({
  contentURL: self.data.url('empty.html'),
  contentScriptFile: self.data.url('call-web-crypto.js')
});

I can call window.crypto.subtle.generateKey in call-web-crypto.js , but I can not access the key properties of the generated key pair:

XrayWrapper denied access to property publicKey (reason: value not same-origin with target). See https://developer.mozilla.org/en-US/docs/Xray_vision for more information. Note that only the first denied property access from a given global object will be reported.

How can I generate a key pair and access its keys in my Firefox Addon?

Answer 1

in main.js you can ...

const { Cu } = require("chrome");
Cu.importGlobalProperties(["crypto"]);

then you'll have access to crypto.subtle.generateKey as well as all the other crypto goodness ... note no window