srcDKIMsign.php

Stand-alone DKIM class to sign email with a 2048 bit private key hashed with SHA-256 algorithm. This stand-alone DKIM class is based on the work made by Louis Ameline and PHP-MAILER (see license below).

The differences are :

• algorithm to hash DKIM key is SHA-256
• 2048 bit key encryption
• composer distributed
• ...

If the class fails to sign the e-mail, the returned DKIM header will be empty and the mail will still be sent, just unsigned. A php warning is thrown for logging.

NOTE: you will NOT be able to use Domain Keys with PHP's mail() function, since it does not allow to prepend the DK header before the To and Subject ones. DKIM is ok with that, but Domain Keys is not. If you still want Domain Keys, you will have to manage to send your mail straight to your MTA without the mail() function.

php-mail-signature by Louis Ameline

https://github.com/louisameline/php-mail-signature

Author: Louis Ameline - 04/2012

This stand-alone DKIM class is based on the work made on PHP-MAILER (see license below). The differences are :

• it is a standalone class
• it supports Domain Keys header
• it supports UTF-8
• it will let you choose the headers you want to base the signature on
• it will let you choose between simple and relaxed body canonicalization

If the class fails to sign the e-mail, the returned DKIM header will be empty and the mail will still be sent, just unsigned. A php warning is thrown for logging.

NOTE: you will NOT be able to use Domain Keys with PHP's mail() function, since it does not allow to prepend the DK header before the To and Subject ones. DKIM is ok with that, but Domain Keys is not. If you still want Domain Keys, you will have to manage to send your mail straight to your MTA without the mail() function.

Successfully tested against Gmail, Yahoo Mail, Live.com, appmaildev.com Hope it helps and saves you plenty of time. Let me know if you find issues.

For more info, you should read :

• http://www.ietf.org/rfc/rfc4871.txt
• http://www.zytrax.com/books/dns/ch9/dkim.html

Original PHPMailer CC info :

.---------------------------------------------------------------------------.
|  Software: PHPMailer - PHP email class                                    |
|   Version: 5.2.1                                                          |
|      Site: https://code.google.com/a/apache-extras.org/p/phpmailer/       |
| ------------------------------------------------------------------------- |
|     Admin: Jim Jagielski (project admininistrator)                        |
|   Authors: Andy Prevost (codeworxtech) codeworxtech@users.sourceforge.net |
|          : Marcus Bointon (coolbru) coolbru@users.sourceforge.net         |
|          : Jim Jagielski (jimjag) jimjag@gmail.com                        |
|   Founder: Brent R. Matzelle (original founder)                           |
| Copyright (c) 2010-2012, Jim Jagielski. All Rights Reserved.              |
| Copyright (c) 2004-2009, Andy Prevost. All Rights Reserved.               |
| Copyright (c) 2001-2003, Brent R. Matzelle                                |
| ------------------------------------------------------------------------- |
|   License: Distributed under the Lesser General Public License (LGPL)     |
|            http://www.gnu.org/copyleft/lesser.html                        |
| This program is distributed in the hope that it will be useful - WITHOUT  |
| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     |
| FITNESS FOR A PARTICULAR PURPOSE.                                         |
'---------------------------------------------------------------------------'

PHPdocumentor

Edit your documentation with this command line:

php ~/vendor/bin/phpdoc -d ~/dkim-php-mail-signature/ -t ~/Documents/GitHub/dkim-php-mail-signature/docs/

Classes

DKIMsign

Stand-alone DKIM class to sign email with a 2048 bit private key hashed with SHA-256 algorithm.