DKIM Verifier

This is an add-on for Mozilla Thunderbird that verifies DKIM signatures according to the RFC 6376.

Usage information can be found in the wiki at https://github.com/lieser/dkim_verifier/wiki.

Code structure

The root of the repository can be directly loaded as a temporary Add-on in Thunderbird.

The following directories and files are included in the packed extension:

• _locales/: Localize strings. More details in the included readme. Only .json files are included in the packed extension.
• content/: The background page and various content pages. Also contains some shared modules for working with the DOM. Only .html, .css and .js files are included in the packed extension.
• data/: Data of the included signers rules and favicons.
• experiments/: Experiment APIs. Only .js, and .json files are included in the packed extension.
• modules/: Internal JavaScript modules (ECMAScript Modules (ESM) / ES6 Modules). Contains most of the business logic. Only .js files are included in the packed extension.
• thirdparty: Most of the included third-party libraries.
• CHANGELOG.txt: Changelog of user visible changes.
• icon.svg / icon-white.svg: Icon of the extension.
• LICENSE.txt: Licensing information for the extension.
• manifest.json: Manifest file containing basic metadata about the extension.
• README.md: This readme.
• THIRDPARTY_LICENSE.txt: Licensing information for included third party software components.

Other directories and files are used only for development. This includes:

• scripts: Node.js scripts used during development.
• test: Automated tests. More details in the included readme.

Included third-party Libraries

• Joshua Tauberer's DNS Library (part of Thunderbird Sender Verification Extension) (https://github.com/tauberer/thunderbird-spf)
  • dns.js - DNS Library
• ES6 version of the tweetnacl-js nacl-fast.js (https://github.com/hakanols/tweetnacl-es6)