Version 4.0.13.1

system/Text/Encrypt.php

@@ -0,0 +1,115 @@
+<?php
+/**
+ * @brief		Encrypt Text
+ * @author		<a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
+ * @copyright	(c) 2001 - SVN_YYYY Invision Power Services, Inc.
+ * @license		http://www.invisionpower.com/legal/standards/
+ * @package		IPS Social Suite
+ * @since		17 Apr 2014
+ * @version		SVN_VERSION_NUMBER
+ */
+
+namespace IPS\Text;
+
+/* To prevent PHP errors (extending class does not exist) revealing path */
+if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
+{
+	header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
+	exit;
+}
+
+/**
+ * Encrypted
+ */
+class _Encrypt
+{
+	/**
+	 * Get Key
+	 *
+	 * @return	void
+	 */
+	public static function key()
+	{
+		return md5( \IPS\Settings::i()->sql_pass . \IPS\Settings::i()->sql_database );
+	}
+	
+	/**
+	 * @brief	Cipher
+	 */
+	public $cipher;
+	
+	/**
+	 * Constructor
+	 *
+	 * @return	void
+	 */
+	public function __construct()
+	{
+		require_once \IPS\ROOT_PATH . '/system/3rd_party/AES/AES.php';
+	}
+	
+	/**
+	 * From plaintext
+	 *
+	 * @param	string	$plaintext	Plaintext
+	 * @return	\IPS\Text\Encrypt
+	 */
+	public static function fromPlaintext( $plaintext )
+	{
+		$obj = new static;
+		$obj->cipher = \AesCtr::encrypt( $plaintext, static::key(), 256 );
+		return $obj;
+	}
+	
+	/**
+	 * From plaintext
+	 *
+	 * @param	string	$cipher	Cipher
+	 * @return	\IPS\Text\Encrypt
+	 */
+	public static function fromCipher( $cipher )
+	{
+		$obj = new static;
+		$obj->cipher = $cipher;
+		return $obj;
+	}
+	
+	/**
+	 * From tag
+	 *
+	 * @param	string	$tag	Tag
+	 * @return	\IPS\Text\Encrypt
+	 */
+	public static function fromTag( $tag )
+	{
+		if ( preg_match( '/^\[\!AES\[(.+?)\]\]/', $tag, $matches ) )
+		{
+			return static::fromCipher( $matches[1] );
+		}
+		else
+		{
+			return static::fromPlaintext( $tag );
+		}
+	}
+	
+	/**
+	 * Wrap in a tag to use later with fromTag
+	 * Used for legacy areas which previously stored unencrypted values
+	 *
+	 * @return	string
+	 */
+	public function tag()
+	{
+		return '[!AES[' . $this->cipher . ']]';
+	}
+	
+	/**
+	 * Decript
+	 *
+	 * @return	string
+	 */
+	public function decrypt()
+	{
+		return \AesCtr::decrypt( $this->cipher, static::key(), 256 );
+	}
+}