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Signed-off-by: Chris Hallgren <[email protected]>
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‎.gitignore‎

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/.phpunit.result.cache
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/.idea/
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/vendor

‎LICENSE‎

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Copyright (c) 2021-present, Chris Hallgren.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎README.md‎

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# php-aws-smtp-password
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Converts an AWS secret access key to a SMTP password.
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This library helps you convert and IAM user credentials to SES SMTP credentials.
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The SMTP username is the Access Key ID. The password can be derived by using a formula provided by AWS at https://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html
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## Installation
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PhpAwsSmtpPassword convert is available on Packagist (using semantic versioning), and installation via Composer is the recommended way to install this. Just add this line to your `composer.json` file:
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```json
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"challgren/php-aws-smtp-password": "^1.0"
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```
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or run
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```
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composer require challgren/php-aws-smtp-password
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```
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## A Simple example
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```php
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<?php
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use PhpAwsSmtpPassword\PhpAwsSmtpPassword;
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$smtp_password = PhpAwsSmtpPassword::convert($key, $region)
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```
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‎composer.json‎

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{
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"name": "challgren/php-aws-smtp-password",
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"type": "library",
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"description": "Converts an AWS secret access key to a SMTP password.",
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"keywords": [
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"aws",
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"access secret",
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"smtp",
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"smpt password",
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"aws smtp password"
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],
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"license": "MIT",
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"authors": [
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{
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"name": "Chris Hallgren",
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"email": "[email protected]"
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}
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],
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"require": {
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"php": ">=7.4"
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},
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"require-dev": {
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"phpunit/phpunit": "^8.5 || ^9.3"
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},
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"autoload": {
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"psr-4": {
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"PhpAwsSmtpPassword\\": "src/"
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}
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},
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"autoload-dev": {
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"psr-4": {
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"PhpAwsSmtpPassword\\Test\\": "tests/"
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}
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}
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}

‎phpunit.xml.dist‎

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<?xml version="1.0" encoding="UTF-8"?>
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<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" colors="true" backupGlobals="true" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd">
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<coverage>
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<include>
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<directory suffix=".php">src/</directory>
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</include>
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</coverage>
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<testsuites>
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<testsuite name="app">
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<directory>tests/TestCase/</directory>
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</testsuite>
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</testsuites>
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<!-- Prevent coverage reports from looking in tests, vendors, config folders -->
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<php>
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<ini name="memory_limit" value="-1"/>
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<!-- E_ALL & ~E_USER_DEPRECATED (16383)-->
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<!-- E_ALL (32767) -->
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<ini name="error_reporting" value="32767"/>
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</php>
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</phpunit>

‎src/PhpAwsSmtpPassword.php‎

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<?php
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namespace PhpAwsSmtpPassword;
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class PhpAwsSmtpPassword
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{
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/**
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* Per https://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html this should never change
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* @var string Date to hash with
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*/
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protected static $date = '11111111';
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/**
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* Per https://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html this should never change
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* @var string Service to hash with
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*/
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protected static $service = 'ses';
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/**
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* Per https://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html this should never change
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* @var string Terminal to hash with
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*/
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protected static $terminal = 'aws4_request';
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/**
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* Per https://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html this should never change
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* @var string Message to hash with
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*/
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protected static $message = 'SendRawEmail';
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/**
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* Per https://docs.aws.amazon.com/ses/latest/DeveloperGuide/smtp-credentials.html this should never change
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* @var string Version to hash with
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*/
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protected static $version = '[4]';
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/**
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* Converts a secret key to a password that can be used with SMTP
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*
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* @param string $key Access secret key
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* @param string $region AWS Region
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* @return string SMTP password
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*/
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public static function convert($key, $region)
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{
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$signature = hash_hmac('sha256', PhpAwsSmtpPassword::$date, 'AWS4' . $key, true);
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$signature = hash_hmac('sha256', $region, $signature, true);
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$signature = hash_hmac('sha256', PhpAwsSmtpPassword::$service, $signature, true);
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$signature = hash_hmac('sha256', PhpAwsSmtpPassword::$terminal, $signature, true);
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$signature = hash_hmac('sha256', PhpAwsSmtpPassword::$message, $signature, true);
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$signatureAndVersion = PhpAwsSmtpPassword::$version . $signature;
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return base64_encode($signatureAndVersion);
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}
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}

‎tests/TestCase/PhpAwsSmtpPasswordTest.php‎

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<?php
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namespace PhpAwsSmtpPassword\Test\TestCase;
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use PhpAwsSmtpPassword\PhpAwsSmtpPassword;
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use PHPUnit\Framework\TestCase;
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class PhpAwsSmtpPasswordTest extends TestCase
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{
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/**
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* Tests the convert function
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*/
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public function testConvert()
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{
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$key = 'wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY';
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$region = 'us-east-1';
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$expected = 'WzRdsEz/2FJQQt+rwbD6tTVhwGOQ7EZuFPZcbvrfFUsZYv0=';
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$this->assertEquals($expected, PhpAwsSmtpPassword::convert($key, $region));
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}
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}

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