https://github.com/forwardemail/dkimpy

Node.js wrapper around the Python pip package dkimpy exposing DKIM and ARC signing and verification functions
https://github.com/forwardemail/dkimpy

arc dkim email javascript nodejs pip python signing verification

Last synced: 3 days ago
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Node.js wrapper around the Python pip package dkimpy exposing DKIM and ARC signing and verification functions

• Host: GitHub
• URL: https://github.com/forwardemail/dkimpy
• Owner: forwardemail
• License: mit
• Created: 2020-08-03T04:55:39.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2023-12-07T02:23:56.000Z (11 months ago)
• Last Synced: 2024-09-06T04:18:24.638Z (2 months ago)
• Topics: arc, dkim, email, javascript, nodejs, pip, python, signing, verification
• Language: JavaScript
• Homepage: https://forwardemail.net
• Size: 434 KB
• Stars: 3
• Watchers: 2
• Forks: 3
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# dkimpy

[![build status](https://img.shields.io/travis/com/forwardemail/dkimpy.svg)](https://travis-ci.com/forwardemail/dkimpy)

[![code coverage](https://img.shields.io/codecov/c/github/forwardemail/dkimpy.svg)](https://codecov.io/gh/forwardemail/dkimpy)

[![code style](https://img.shields.io/badge/code_style-XO-5ed9c7.svg)](https://github.com/sindresorhus/xo)

[![styled with prettier](https://img.shields.io/badge/styled_with-prettier-ff69b4.svg)](https://github.com/prettier/prettier)

[![made with lass](https://img.shields.io/badge/made_with-lass-95CC28.svg)](https://lass.js.org)

[![license](https://img.shields.io/github/license/forwardemail/dkimpy.svg)](LICENSE)

[![npm downloads](https://img.shields.io/npm/dt/dkimpy.svg)](https://npm.im/dkimpy)

> Node.js wrapper around the Python pip package dkimpy exposing DKIM and ARC signing and verification functions

## Table of Contents

* [Requirements](#requirements)

* [Install](#install)

* [Usage](#usage)

  * [dkimVerify](#dkimverify)

  * [arcVerify](#arcverify)

  * [arcSign](#arcsign)

* [Contributors](#contributors)

* [License](#license)

## Requirements

1. Ensure that you have a Python version of >= 3.5 installed per [dkimpy][] requirements (note that Python v3 is required because of a bug with DNS recursive CNAME lookups on v2.7):

   ```sh

   python3 --version

   ```

2. Install the package [dkimpy][] and [authres][] (`authres` is optional and used for ARC):

   ```sh

   pip3 install dkimpy authres

   ```

## Install

[npm][]:

```sh

npm install dkimpy

```

[yarn][]:

```sh

yarn add dkimpy

```

## Usage

### dkimVerify

```js

const fs = require('fs');

const { dkimVerify } = require('dkimpy');

const message = fs.readFileSync('/path/to/example.eml');

// then/catch usage

dkimVerify(message)

  .then(console.log)

  .catch(console.error);

// async/await usage

(async () => {

  try {

    const result = await dkimVerify(message)

    console.log(result);

  } catch (err) {

    console.error(err);

  }

})();

```

The value of `result` is a Boolean which indicates if DKIM verification was successful for the first `DKIM-Signature` header found on the email.

You can pass a second argument of `index` (defaults to `0`, which means it looks for the first DKIM-Signature found).

### arcVerify

```js

const fs = require('fs');

const { arcVerify } = require('dkimpy');

const message = fs.readFileSync('/path/to/example.eml');

// then/catch usage

arcVerify(message)

  .then(console.log)

  .catch(console.error);

// async/await usage

(async () => {

  try {

    const result = await arcVerify(message)

    console.log(result);

  } catch (err) {

    console.error(err);

  }

})();

```

The value of `result` is an enumerable String which is one of:

* `"none"` indicates it does not have an ARC signature

* `"pass"` indicates its ARC signature was verified successfully

* `"fail"` indicates it had an ARC signature and it failed verification

### arcSign

```js

const fs = require('fs');

const { arcSign } = require('dkimpy');

const message = fs.readFileSync('/path/to/example.eml');

const selector = 'default'; // default._domainkey

const domain = 'example.com';

const srvId = 'mx.example.com';

const privateKeyFile = '/path/to/private.key';

// then/catch usage

arcSign(message, selector, domain, privateKeyFile, srvId)

  .then(console.log)

  .catch(console.error);

// async/await usage

(async () => {

  try {

    const result = await arcSign(message, selector, domain, privateKeyFile, srvId)

    console.log(result);

  } catch (err) {

    console.error(err);

  }

})();

```

The value of `result` is a String with the new ARC headers to add to the top of the message (if any).

## Contributors

| Name           | Website                    |

| -------------- | -------------------------- |

| **Nick Baugh** |  |

## License

[MIT](LICENSE) © [Nick Baugh](http://niftylettuce.com/)

## 

[npm]: https://www.npmjs.com/

[yarn]: https://yarnpkg.com/

[dkimpy]: https://pypi.org/project/dkimpy/

[authres]: https://pypi.org/project/authres/