[ticket/15646] Added support for Argon2i passwords

PHPBB3-15646

phpBB/config/default/container/services_password.yml

@@ -1,4 +1,7 @@
 parameters:
+    passwords.driver.argon2_memory_cost: 1024
+    passwords.driver.argon2_threads: 2
+    passwords.driver.argon2_time_cost: 2
     passwords.driver.bcrypt_cost: 10
 
 services:
@@ -27,6 +30,17 @@ services:
         tags:
             - { name: service_collection, tag: passwords.driver }
 
+    passwords.driver.argon2i:
+        class: phpbb\passwords\driver\argon2i
+        arguments:
+            - '@config'
+            - '@passwords.driver_helper'
+            - '%passwords.driver.argon2_memory_cost%'
+            - '%passwords.driver.argon2_threads%'
+            - '%passwords.driver.argon2_time_cost%'
+        tags:
+            - { name: passwords.driver }
+
     passwords.driver.bcrypt:
         class: phpbb\passwords\driver\bcrypt
         arguments:

phpBB/phpbb/passwords/driver/argon2i.php

@@ -0,0 +1,101 @@
+<?php
+/**
+*
+* This file is part of the phpBB Forum Software package.
+*
+* @copyright (c) phpBB Limited <https://www.phpbb.com>
+* @license GNU General Public License, version 2 (GPL-2.0)
+*
+* For full copyright and license information, please see
+* the docs/CREDITS.txt file.
+*
+*/
+
+namespace phpbb\passwords\driver;
+
+class argon2i extends base
+{
+	const PREFIX = '$argon2i$';
+
+	/** @var int Maximum memory (in bytes) that may be used to compute the Argon2 hash */
+	protected $memory_cost;
+
+	/** @var int Number of threads to use for computing the Argon2 hash */
+	protected $threads;
+
+	/** @var int Maximum amount of time it may take to compute the Argon2 hash */
+	protected $time_cost;
+
+	/**
+	* Constructor of passwords driver object
+	*
+	* @param \phpbb\config\config $config phpBB config
+	* @param \phpbb\passwords\driver\helper $helper Password driver helper
+	* @param int $memory_cost Maximum memory (optional)
+	* @param int $threads Number of threads to use (optional)
+	* @param int $time_cost Maximum amount of time (optional)
+	*/
+	public function __construct(\phpbb\config\config $config, helper $helper, $memory_cost = 1024, $threads = 2, $time_cost = 2)
+	{
+		parent::__construct($config, $helper);
+
+		// Don't allow cost factors to be below default settings
+		$this->memory_cost = max($memory_cost, 1024);
+		$this->threads     = max($threads,     2);
+		$this->time_cost   = max($time_cost,   2);
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function check($password, $hash, $user_row = [])
+	{
+		return password_verify($password, $hash);
+	}
+
+	/**
+	* Return the options set for this driver instance
+	*
+	* @return array
+	*/
+	public function get_options()
+	{
+		return [
+			'memory_cost' => $this->memory_cost,
+			'time_cost'   => $this->time_cost,
+			'threads'     => $this->threads
+		];
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function get_prefix()
+	{
+		return self::PREFIX;
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function hash($password)
+	{
+		return password_hash($password, PASSWORD_ARGON2I, $this->get_options());
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function is_supported()
+	{
+		return defined('PASSWORD_ARGON2I') && function_exists('password_hash') && function_exists('password_needs_rehash') && function_exists('password_verify');
+	}
+
+	/**
+	* {@inheritdoc}
+	*/
+	public function needs_rehash($hash)
+	{
+		return password_needs_rehash($hash, PASSWORD_ARGON2I, $this->get_options());
+	}
+}