Examine source code of IDSignVerif

{
  "manifest_version": 2,
  "name": "IDSignVerif",
  "description": "Perform identity based cryptographic signatures and verification",
  "version": "0.1.7b",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "storage",
    "menus",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js",
      "window.js",
      "lib/ibc/ibs.js",
      "lib/ibc/jws.js",
      "lib/ibc/der.js",
      "lib/jsrsasign-all-min.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "32": "icons/icon-32.png"
    },
    "default_title": "IDSignVerif",
    "default_popup": "menu.html"
  },
  "icons": {
    "32": "icons/icon-32.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "idsignverif@mmu.edu.my",
      "strict_min_version": "62.0"
    }
  }
}