[feature/passwords] Rename "crypto" files to "passwords" files

PHPBB3-11610

phpBB/phpbb/passwords/driver/salted_md5.php

@@ -0,0 +1,152 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2013 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* @package passwords
+*/
+class phpbb_passwords_driver_salted_md5 extends phpbb_passwords_driver_base
+{
+	const PREFIX = '$H$';
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_prefix()
+	{
+		return self::PREFIX;
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_type()
+	{
+		return get_class($this);
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function hash($password, $setting = '')
+	{
+		if ($setting != '')
+		{
+			if (($settings = $this->get_hash_settings($setting)) === false)
+			{
+				return false;
+			}
+		}
+		else
+		{
+			if (($settings = $this->get_hash_settings($this->generate_salt())) === false)
+			{
+				return false;
+			}
+		}
+
+		$hash = md5($settings['salt'] . $password, true);
+		do
+		{
+			$hash = md5($hash . $password, true);
+		}
+		while (--$settings['count']);
+
+		$output = $settings['full'];
+		$output .= $this->helper->hash_encode64($hash, 16);
+
+		if (strlen($output) == 34)
+		{
+			return $output;
+		}
+
+		// Should we really just return the md5 of the password? O.o
+		return md5($password);
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function check($password, $hash)
+	{
+		if (strlen($hash) !== 34)
+		{
+			return (md5($password) === $hash) ? true : false;
+		}
+		// No need to check prefix, already did that in manage
+
+		if ($hash === $this->hash($password, $hash))
+		{
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	* Generate salt for hashing method
+	*
+	* @return string Salt for hashing method
+	*/
+	protected function generate_salt()
+	{
+		$salt = '';
+		$random = '';
+		$count = 6;
+
+		$random = $this->helper->get_random_salt($count);
+
+		$salt = $this->get_prefix();
+		$salt .= $this->helper->itoa64[min($count + 5, 30)];
+		$salt .= $this->helper->hash_encode64($random, $count);
+
+		return $salt;
+	}
+
+	/**
+	* Get hash settings
+	*
+	* @return array Array containing the count_log2, salt, and full hash
+	*		settings string
+	*/
+	public function get_hash_settings($hash)
+	{
+		if (empty($hash))
+		{
+			return false;
+		}
+		$count_log2 = strpos($this->helper->itoa64, $hash[3]);
+		$salt = substr($hash, 4, 8);
+
+		if ($count_log2 < 7 || $count_log2 > 30 || strlen($salt) != 8)
+		{
+			return false;
+		}
+
+		return array(
+			'count'	=> 1 << $count_log2,
+			'salt'	=> $salt,
+			'full'	=> substr($hash, 0, 12),
+		);
+	}
+
+	/**
+	* @inheritdoc
+	*/
+	public function get_settings_only($hash, $full = false)
+	{
+		return substr($hash, 3, 9);
+	}
+}