FossaGuard: Encrypt Gmail with S/MIME

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "__MSG_appName__",
  "short_name": "__MSG_appShortName__",
  "version": "0.4.20",
  "manifest_version": 2,
  "description": "__MSG_appDescription__",
  "icons": {
    "16": "images/icon-64.png",
    "128": "images/icon-128.png"
  },
  "applications": {
    "gecko": {
      "id": "[email protected]",
      "strict_min_version": "65.0"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "[email protected]",
      "strict_min_version": "65.0"
    }
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": {
      "19": "images/icon-64.png",
      "38": "images/icon-64.png"
    },
    "default_title": "__MSG_appName__"
  },
  "options_ui": {
    "page": "settings.html",
    "chrome_style": true,
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "scripts/contentscript.js"
      ],
      "css": [
        "styles/contentstyle.css"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    "scripts/vendor.js",
    "compose.html",
    "styles/compose.css",
    "scripts/compose.js",
    "view.html",
    "styles/view.css",
    "scripts/view.js",
    "scripts/proxy.js",
    "images/*"
  ],
  "permissions": [
    "storage",
    "identity",
    "identity.email",
    "https://www.googleapis.com/gmail/*",
    "https://www.google.com/m8/feeds/contacts/*",
    "https://fossa.me/",
    "http://*/",
    "https://*/",
    "tabs",
    "windows"
  ],
  "oauth2": {
    "client_id": "1001103668854-e5ilhmqqrg7hvs5n47t36njcg0a8fjrs.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/gmail.readonly",
      "https://www.googleapis.com/auth/gmail.send",
      "https://www.googleapis.com/auth/gmail.labels",
      "https://www.googleapis.com/auth/gmail.modify",
      "https://www.googleapis.com/auth/contacts.readonly"
    ]
  }
}