Merge branch 'archwiki'

Conflicts:
	extensions/FluxBBAuthPlugin.php
	extensions/SyntaxHighlight_GeSHi/README
	extensions/SyntaxHighlight_GeSHi/SyntaxHighlight_GeSHi.class.php
	extensions/SyntaxHighlight_GeSHi/SyntaxHighlight_GeSHi.i18n.php
	extensions/SyntaxHighlight_GeSHi/SyntaxHighlight_GeSHi.php
	extensions/SyntaxHighlight_GeSHi/geshi/docs/CHANGES
	extensions/SyntaxHighlight_GeSHi/geshi/docs/THANKS
	extensions/SyntaxHighlight_GeSHi/geshi/docs/TODO
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/AbstractClass.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/AbstractClass_logo.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/AbstractMethod.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/AbstractPrivateClass.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/AbstractPrivateClass_logo.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/AbstractPrivateMethod.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Class.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Class_logo.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Constant.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Constructor.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Destructor.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Function.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Global.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/I.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Index.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Interface.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Interface_logo.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/L.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Lminus.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Lplus.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Method.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Page.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Page_logo.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/PrivateClass.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/PrivateClass_logo.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/PrivateMethod.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/PrivateVariable.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/StaticMethod.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/StaticVariable.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/T.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Tminus.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Tplus.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/Variable.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/blank.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/class_folder.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/file.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/folder.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/function_folder.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/next_button.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/next_button_disabled.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/package.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/package_folder.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/previous_button.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/previous_button_disabled.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/private_class_logo.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/tutorial.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/tutorial_folder.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/api/media/images/up_button.png
	extensions/SyntaxHighlight_GeSHi/geshi/docs/geshi-doc.html
	extensions/SyntaxHighlight_GeSHi/geshi/docs/geshi-doc.txt
	extensions/SyntaxHighlight_GeSHi/geshi/geshi.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/4cs.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/6502acme.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/6502kickass.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/6502tasm.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/68000devpac.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/abap.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/actionscript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/actionscript3.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/ada.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/algol68.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/apache.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/applescript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/apt_sources.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/asm.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/asp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/autoconf.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/autohotkey.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/autoit.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/avisynth.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/awk.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/bascomavr.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/bash.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/basic4gl.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/bf.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/bibtex.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/blitzbasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/bnf.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/boo.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/c.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/c_loadrunner.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/c_mac.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/caddcl.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cadlisp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cfdg.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cfm.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/chaiscript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cil.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/clojure.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cmake.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cobol.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/coffeescript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cpp-qt.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cpp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/csharp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/css.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/cuesheet.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/d.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/dcs.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/delphi.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/diff.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/div.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/dos.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/dot.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/e.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/ecmascript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/eiffel.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/email.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/epc.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/erlang.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/euphoria.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/f1.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/falcon.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/fo.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/fortran.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/freebasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/fsharp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/gambas.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/gdb.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/genero.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/genie.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/gettext.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/glsl.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/gml.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/gnuplot.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/go.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/groovy.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/gwbasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/haskell.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/hicest.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/hq9plus.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/html4strict.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/html5.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/icon.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/idl.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/ini.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/inno.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/intercal.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/io.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/j.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/java.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/java5.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/javascript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/jquery.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/kixtart.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/klonec.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/klonecpp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/latex.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lb.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lisp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/llvm.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/locobasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/logtalk.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lolcode.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lotusformulas.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lotusscript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lscript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lsl2.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/lua.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/m68k.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/magiksf.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/make.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/mapbasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/matlab.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/mirc.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/mmix.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/modula2.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/modula3.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/mpasm.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/mxml.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/mysql.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/newlisp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/nsis.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/oberon2.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/objc.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/objeck.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/ocaml-brief.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/ocaml.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/oobas.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/oracle11.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/oracle8.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/oxygene.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/oz.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pascal.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pcre.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/per.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/perl.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/perl6.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pf.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/php-brief.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/php.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pic16.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pike.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pixelbender.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pli.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/plsql.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/postgresql.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/povray.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/powerbuilder.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/powershell.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/proftpd.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/progress.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/prolog.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/properties.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/providex.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/purebasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/pycon.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/python.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/q.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/qbasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/rails.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/rebol.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/reg.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/robots.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/rpmspec.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/rsplus.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/ruby.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/sas.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/scala.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/scheme.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/scilab.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/sdlbasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/smalltalk.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/smarty.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/sql.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/systemverilog.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/tcl.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/teraterm.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/text.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/thinbasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/tsql.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/typoscript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/unicon.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/uscript.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/vala.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/vb.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/vbnet.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/verilog.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/vhdl.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/vim.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/visualfoxpro.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/visualprolog.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/whitespace.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/whois.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/winbatch.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/xbasic.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/xml.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/xorg_conf.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/xpp.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/yaml.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/z80.php
	extensions/SyntaxHighlight_GeSHi/geshi/geshi/zxbasic.php

1 files changed, 497 insertions, 0 deletions

diff --git a/includes/MWCryptRand.php b/includes/MWCryptRand.php
new file mode 100644
index 00000000..bac018e8
--- /dev/null
+++ b/includes/MWCryptRand.php
@@ -0,0 +1,497 @@
+<?php
+/**
+ * A cryptographic random generator class used for generating secret keys
+ *
+ * This is based in part on Drupal code as well as what we used in our own code
+ * prior to introduction of this class.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @author Daniel Friesen
+ * @file
+ */
+
+class MWCryptRand {
+
+	/**
+	 * Minimum number of iterations we want to make in our drift calculations.
+	 */
+	const MIN_ITERATIONS = 1000;
+
+	/**
+	 * Number of milliseconds we want to spend generating each separate byte
+	 * of the final generated bytes.
+	 * This is used in combination with the hash length to determine the duration
+	 * we should spend doing drift calculations.
+	 */
+	const MSEC_PER_BYTE = 0.5;
+
+	/**
+	 * Singleton instance for public use
+	 */
+	protected static $singleton = null;
+
+	/**
+	 * The hash algorithm being used
+	 */
+	protected $algo = null;
+
+	/**
+	 * The number of bytes outputted by the hash algorithm
+	 */
+	protected $hashLength = null;
+
+	/**
+	 * A boolean indicating whether the previous random generation was done using
+	 * cryptographically strong random number generator or not.
+	 */
+	protected $strong = null;
+
+	/**
+	 * Initialize an initial random state based off of whatever we can find
+	 */
+	protected function initialRandomState() {
+		// $_SERVER contains a variety of unstable user and system specific information
+		// It'll vary a little with each page, and vary even more with separate users
+		// It'll also vary slightly across different machines
+		$state = serialize( $_SERVER );
+
+		// To try vary the system information of the state a bit more
+		// by including the system's hostname into the state
+		$state .= wfHostname();
+
+		// Try to gather a little entropy from the different php rand sources
+		$state .= rand() . uniqid( mt_rand(), true );
+
+		// Include some information about the filesystem's current state in the random state
+		$files = array();
+
+		// We know this file is here so grab some info about ourselves
+		$files[] = __FILE__;
+
+		// We must also have a parent folder, and with the usual file structure, a grandparent
+		$files[] = __DIR__;
+		$files[] = dirname( __DIR__ );
+
+		// The config file is likely the most often edited file we know should be around
+		// so include its stat info into the state.
+		// The constant with its location will almost always be defined, as WebStart.php defines
+		// MW_CONFIG_FILE to $IP/LocalSettings.php unless being configured with MW_CONFIG_CALLBACK (eg. the installer)
+		if ( defined( 'MW_CONFIG_FILE' ) ) {
+			$files[] = MW_CONFIG_FILE;
+		}
+
+		foreach ( $files as $file ) {
+			wfSuppressWarnings();
+			$stat = stat( $file );
+			wfRestoreWarnings();
+			if ( $stat ) {
+				// stat() duplicates data into numeric and string keys so kill off all the numeric ones
+				foreach ( $stat as $k => $v ) {
+					if ( is_numeric( $k ) ) {
+						unset( $k );
+					}
+				}
+				// The absolute filename itself will differ from install to install so don't leave it out
+				if ( ( $path = realpath( $file ) ) !== false ) {
+					$state .= $path;
+				} else {
+					$state .= $file;
+				}
+				$state .= implode( '', $stat );
+			} else {
+				// The fact that the file isn't there is worth at least a
+				// minuscule amount of entropy.
+				$state .= '0';
+			}
+		}
+
+		// Try and make this a little more unstable by including the varying process
+		// id of the php process we are running inside of if we are able to access it
+		if ( function_exists( 'getmypid' ) ) {
+			$state .= getmypid();
+		}
+
+		// If available try to increase the instability of the data by throwing in
+		// the precise amount of memory that we happen to be using at the moment.
+		if ( function_exists( 'memory_get_usage' ) ) {
+			$state .= memory_get_usage( true );
+		}
+
+		// It's mostly worthless but throw the wiki's id into the data for a little more variance
+		$state .= wfWikiID();
+
+		// If we have a secret key or proxy key set then throw it into the state as well
+		global $wgSecretKey, $wgProxyKey;
+		if ( $wgSecretKey ) {
+			$state .= $wgSecretKey;
+		} elseif ( $wgProxyKey ) {
+			$state .= $wgProxyKey;
+		}
+
+		return $state;
+	}
+
+	/**
+	 * Randomly hash data while mixing in clock drift data for randomness
+	 *
+	 * @param string $data The data to randomly hash.
+	 * @return String The hashed bytes
+	 * @author Tim Starling
+	 */
+	protected function driftHash( $data ) {
+		// Minimum number of iterations (to avoid slow operations causing the loop to gather little entropy)
+		$minIterations = self::MIN_ITERATIONS;
+		// Duration of time to spend doing calculations (in seconds)
+		$duration = ( self::MSEC_PER_BYTE / 1000 ) * $this->hashLength();
+		// Create a buffer to use to trigger memory operations
+		$bufLength = 10000000;
+		$buffer = str_repeat( ' ', $bufLength );
+		$bufPos = 0;
+
+		// Iterate for $duration seconds or at least $minIterations number of iterations
+		$iterations = 0;
+		$startTime = microtime( true );
+		$currentTime = $startTime;
+		while ( $iterations < $minIterations || $currentTime - $startTime < $duration ) {
+			// Trigger some memory writing to trigger some bus activity
+			// This may create variance in the time between iterations
+			$bufPos = ( $bufPos + 13 ) % $bufLength;
+			$buffer[$bufPos] = ' ';
+			// Add the drift between this iteration and the last in as entropy
+			$nextTime = microtime( true );
+			$delta = (int)( ( $nextTime - $currentTime ) * 1000000 );
+			$data .= $delta;
+			// Every 100 iterations hash the data and entropy
+			if ( $iterations % 100 === 0 ) {
+				$data = sha1( $data );
+			}
+			$currentTime = $nextTime;
+			$iterations++;
+		}
+		$timeTaken = $currentTime - $startTime;
+		$data = $this->hash( $data );
+
+		wfDebug( __METHOD__ . ": Clock drift calculation " .
+			"(time-taken=" . ( $timeTaken * 1000 ) . "ms, " .
+			"iterations=$iterations, " .
+			"time-per-iteration=" . ( $timeTaken / $iterations * 1e6 ) . "us)\n" );
+		return $data;
+	}
+
+	/**
+	 * Return a rolling random state initially build using data from unstable sources
+	 * @return string A new weak random state
+	 */
+	protected function randomState() {
+		static $state = null;
+		if ( is_null( $state ) ) {
+			// Initialize the state with whatever unstable data we can find
+			// It's important that this data is hashed right afterwards to prevent
+			// it from being leaked into the output stream
+			$state = $this->hash( $this->initialRandomState() );
+		}
+		// Generate a new random state based on the initial random state or previous
+		// random state by combining it with clock drift
+		$state = $this->driftHash( $state );
+		return $state;
+	}
+
+	/**
+	 * Decide on the best acceptable hash algorithm we have available for hash()
+	 * @throws MWException
+	 * @return String A hash algorithm
+	 */
+	protected function hashAlgo() {
+		if ( !is_null( $this->algo ) ) {
+			return $this->algo;
+		}
+
+		$algos = hash_algos();
+		$preference = array( 'whirlpool', 'sha256', 'sha1', 'md5' );
+
+		foreach ( $preference as $algorithm ) {
+			if ( in_array( $algorithm, $algos ) ) {
+				$this->algo = $algorithm;
+				wfDebug( __METHOD__ . ": Using the {$this->algo} hash algorithm.\n" );
+				return $this->algo;
+			}
+		}
+
+		// We only reach here if no acceptable hash is found in the list, this should
+		// be a technical impossibility since most of php's hash list is fixed and
+		// some of the ones we list are available as their own native functions
+		// But since we already require at least 5.2 and hash() was default in
+		// 5.1.2 we don't bother falling back to methods like sha1 and md5.
+		throw new MWException( "Could not find an acceptable hashing function in hash_algos()" );
+	}
+
+	/**
+	 * Return the byte-length output of the hash algorithm we are
+	 * using in self::hash and self::hmac.
+	 *
+	 * @return int Number of bytes the hash outputs
+	 */
+	protected function hashLength() {
+		if ( is_null( $this->hashLength ) ) {
+			$this->hashLength = strlen( $this->hash( '' ) );
+		}
+		return $this->hashLength;
+	}
+
+	/**
+	 * Generate an acceptably unstable one-way-hash of some text
+	 * making use of the best hash algorithm that we have available.
+	 *
+	 * @param $data string
+	 * @return String A raw hash of the data
+	 */
+	protected function hash( $data ) {
+		return hash( $this->hashAlgo(), $data, true );
+	}
+
+	/**
+	 * Generate an acceptably unstable one-way-hmac of some text
+	 * making use of the best hash algorithm that we have available.
+	 *
+	 * @param $data string
+	 * @param $key string
+	 * @return String A raw hash of the data
+	 */
+	protected function hmac( $data, $key ) {
+		return hash_hmac( $this->hashAlgo(), $data, $key, true );
+	}
+
+	/**
+	 * @see self::wasStrong()
+	 */
+	public function realWasStrong() {
+		if ( is_null( $this->strong ) ) {
+			throw new MWException( __METHOD__ . ' called before generation of random data' );
+		}
+		return $this->strong;
+	}
+
+	/**
+	 * @see self::generate()
+	 */
+	public function realGenerate( $bytes, $forceStrong = false ) {
+		wfProfileIn( __METHOD__ );
+
+		wfDebug( __METHOD__ . ": Generating cryptographic random bytes for " . wfGetAllCallers( 5 ) . "\n" );
+
+		$bytes = floor( $bytes );
+		static $buffer = '';
+		if ( is_null( $this->strong ) ) {
+			// Set strength to false initially until we know what source data is coming from
+			$this->strong = true;
+		}
+
+		if ( strlen( $buffer ) < $bytes ) {
+			// If available make use of mcrypt_create_iv URANDOM source to generate randomness
+			// On unix-like systems this reads from /dev/urandom but does it without any buffering
+			// and bypasses openbasedir restrictions, so it's preferable to reading directly
+			// On Windows starting in PHP 5.3.0 Windows' native CryptGenRandom is used to generate
+			// entropy so this is also preferable to just trying to read urandom because it may work
+			// on Windows systems as well.
+			if ( function_exists( 'mcrypt_create_iv' ) ) {
+				wfProfileIn( __METHOD__ . '-mcrypt' );
+				$rem = $bytes - strlen( $buffer );
+				$iv = mcrypt_create_iv( $rem, MCRYPT_DEV_URANDOM );
+				if ( $iv === false ) {
+					wfDebug( __METHOD__ . ": mcrypt_create_iv returned false.\n" );
+				} else {
+					$buffer .= $iv;
+					wfDebug( __METHOD__ . ": mcrypt_create_iv generated " . strlen( $iv ) . " bytes of randomness.\n" );
+				}
+				wfProfileOut( __METHOD__ . '-mcrypt' );
+			}
+		}
+
+		if ( strlen( $buffer ) < $bytes ) {
+			// If available make use of openssl's random_pseudo_bytes method to attempt to generate randomness.
+			// However don't do this on Windows with PHP < 5.3.4 due to a bug:
+			// http://stackoverflow.com/questions/1940168/openssl-random-pseudo-bytes-is-slow-php
+			// http://git.php.net/?p=php-src.git;a=commitdiff;h=cd62a70863c261b07f6dadedad9464f7e213cad5
+			if ( function_exists( 'openssl_random_pseudo_bytes' )
+				&& ( !wfIsWindows() || version_compare( PHP_VERSION, '5.3.4', '>=' ) )
+			) {
+				wfProfileIn( __METHOD__ . '-openssl' );
+				$rem = $bytes - strlen( $buffer );
+				$openssl_bytes = openssl_random_pseudo_bytes( $rem, $openssl_strong );
+				if ( $openssl_bytes === false ) {
+					wfDebug( __METHOD__ . ": openssl_random_pseudo_bytes returned false.\n" );
+				} else {
+					$buffer .= $openssl_bytes;
+					wfDebug( __METHOD__ . ": openssl_random_pseudo_bytes generated " . strlen( $openssl_bytes ) . " bytes of " . ( $openssl_strong ? "strong" : "weak" ) . " randomness.\n" );
+				}
+				if ( strlen( $buffer ) >= $bytes ) {
+					// openssl tells us if the random source was strong, if some of our data was generated
+					// using it use it's say on whether the randomness is strong
+					$this->strong = !!$openssl_strong;
+				}
+				wfProfileOut( __METHOD__ . '-openssl' );
+			}
+		}
+
+		// Only read from urandom if we can control the buffer size or were passed forceStrong
+		if ( strlen( $buffer ) < $bytes && ( function_exists( 'stream_set_read_buffer' ) || $forceStrong ) ) {
+			wfProfileIn( __METHOD__ . '-fopen-urandom' );
+			$rem = $bytes - strlen( $buffer );
+			if ( !function_exists( 'stream_set_read_buffer' ) && $forceStrong ) {
+				wfDebug( __METHOD__ . ": Was forced to read from /dev/urandom without control over the buffer size.\n" );
+			}
+			// /dev/urandom is generally considered the best possible commonly
+			// available random source, and is available on most *nix systems.
+			wfSuppressWarnings();
+			$urandom = fopen( "/dev/urandom", "rb" );
+			wfRestoreWarnings();
+
+			// Attempt to read all our random data from urandom
+			// php's fread always does buffered reads based on the stream's chunk_size
+			// so in reality it will usually read more than the amount of data we're
+			// asked for and not storing that risks depleting the system's random pool.
+			// If stream_set_read_buffer is available set the chunk_size to the amount
+			// of data we need. Otherwise read 8k, php's default chunk_size.
+			if ( $urandom ) {
+				// php's default chunk_size is 8k
+				$chunk_size = 1024 * 8;
+				if ( function_exists( 'stream_set_read_buffer' ) ) {
+					// If possible set the chunk_size to the amount of data we need
+					stream_set_read_buffer( $urandom, $rem );
+					$chunk_size = $rem;
+				}
+				$random_bytes = fread( $urandom, max( $chunk_size, $rem ) );
+				$buffer .= $random_bytes;
+				fclose( $urandom );
+				wfDebug( __METHOD__ . ": /dev/urandom generated " . strlen( $random_bytes ) . " bytes of randomness.\n" );
+				if ( strlen( $buffer ) >= $bytes ) {
+					// urandom is always strong, set to true if all our data was generated using it
+					$this->strong = true;
+				}
+			} else {
+				wfDebug( __METHOD__ . ": /dev/urandom could not be opened.\n" );
+			}
+			wfProfileOut( __METHOD__ . '-fopen-urandom' );
+		}
+
+		// If we cannot use or generate enough data from a secure source
+		// use this loop to generate a good set of pseudo random data.
+		// This works by initializing a random state using a pile of unstable data
+		// and continually shoving it through a hash along with a variable salt.
+		// We hash the random state with more salt to avoid the state from leaking
+		// out and being used to predict the /randomness/ that follows.
+		if ( strlen( $buffer ) < $bytes ) {
+			wfDebug( __METHOD__ . ": Falling back to using a pseudo random state to generate randomness.\n" );
+		}
+		while ( strlen( $buffer ) < $bytes ) {
+			wfProfileIn( __METHOD__ . '-fallback' );
+			$buffer .= $this->hmac( $this->randomState(), mt_rand() );
+			// This code is never really cryptographically strong, if we use it
+			// at all, then set strong to false.
+			$this->strong = false;
+			wfProfileOut( __METHOD__ . '-fallback' );
+		}
+
+		// Once the buffer has been filled up with enough random data to fulfill
+		// the request shift off enough data to handle the request and leave the
+		// unused portion left inside the buffer for the next request for random data
+		$generated = substr( $buffer, 0, $bytes );
+		$buffer = substr( $buffer, $bytes );
+
+		wfDebug( __METHOD__ . ": " . strlen( $buffer ) . " bytes of randomness leftover in the buffer.\n" );
+
+		wfProfileOut( __METHOD__ );
+		return $generated;
+	}
+
+	/**
+	 * @see self::generateHex()
+	 */
+	public function realGenerateHex( $chars, $forceStrong = false ) {
+		// hex strings are 2x the length of raw binary so we divide the length in half
+		// odd numbers will result in a .5 that leads the generate() being 1 character
+		// short, so we use ceil() to ensure that we always have enough bytes
+		$bytes = ceil( $chars / 2 );
+		// Generate the data and then convert it to a hex string
+		$hex = bin2hex( $this->generate( $bytes, $forceStrong ) );
+		// A bit of paranoia here, the caller asked for a specific length of string
+		// here, and it's possible (eg when given an odd number) that we may actually
+		// have at least 1 char more than they asked for. Just in case they made this
+		// call intending to insert it into a database that does truncation we don't
+		// want to give them too much and end up with their database and their live
+		// code having two different values because part of what we gave them is truncated
+		// hence, we strip out any run of characters longer than what we were asked for.
+		return substr( $hex, 0, $chars );
+	}
+
+	/** Publicly exposed static methods **/
+
+	/**
+	 * Return a singleton instance of MWCryptRand
+	 * @return MWCryptRand
+	 */
+	protected static function singleton() {
+		if ( is_null( self::$singleton ) ) {
+			self::$singleton = new self;
+		}
+		return self::$singleton;
+	}
+
+	/**
+	 * Return a boolean indicating whether or not the source used for cryptographic
+	 * random bytes generation in the previously run generate* call
+	 * was cryptographically strong.
+	 *
+	 * @return bool Returns true if the source was strong, false if not.
+	 */
+	public static function wasStrong() {
+		return self::singleton()->realWasStrong();
+	}
+
+	/**
+	 * Generate a run of (ideally) cryptographically random data and return
+	 * it in raw binary form.
+	 * You can use MWCryptRand::wasStrong() if you wish to know if the source used
+	 * was cryptographically strong.
+	 *
+	 * @param int $bytes the number of bytes of random data to generate
+	 * @param bool $forceStrong Pass true if you want generate to prefer cryptographically
+	 *                          strong sources of entropy even if reading from them may steal
+	 *                          more entropy from the system than optimal.
+	 * @return String Raw binary random data
+	 */
+	public static function generate( $bytes, $forceStrong = false ) {
+		return self::singleton()->realGenerate( $bytes, $forceStrong );
+	}
+
+	/**
+	 * Generate a run of (ideally) cryptographically random data and return
+	 * it in hexadecimal string format.
+	 * You can use MWCryptRand::wasStrong() if you wish to know if the source used
+	 * was cryptographically strong.
+	 *
+	 * @param int $chars the number of hex chars of random data to generate
+	 * @param bool $forceStrong Pass true if you want generate to prefer cryptographically
+	 *                          strong sources of entropy even if reading from them may steal
+	 *                          more entropy from the system than optimal.
+	 * @return String Hexadecimal random data
+	 */
+	public static function generateHex( $chars, $forceStrong = false ) {
+		return self::singleton()->realGenerateHex( $chars, $forceStrong );
+	}
+
+}