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			362 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!--
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              This file is generated from xml source: DO NOT EDIT
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      -->
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<title>mod_auth_digest - Apache HTTP Server</title>
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<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
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<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
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<link href="../images/favicon.ico" rel="shortcut icon" /></head>
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<body>
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<div id="page-header">
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p>
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<p class="apache">Apache HTTP Server Version 2.5</p>
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<img alt="" src="../images/feather.gif" /></div>
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<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
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<div id="path">
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<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.5</a> > <a href="./">Modules</a></div>
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<div id="page-content">
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<div id="preamble"><h1>Apache Module mod_auth_digest</h1>
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<div class="toplang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_auth_digest.html" title="English"> en </a> |
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<a href="../fr/mod/mod_auth_digest.html" hreflang="fr" rel="alternate" title="Fran<61>ais"> fr </a> |
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<a href="../ko/mod/mod_auth_digest.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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</div>
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>User authentication using MD5
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    Digest Authentication</td></tr>
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<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="module-dict.html#ModuleIdentifier">Module<EFBFBD>Identifier:</a></th><td>auth_digest_module</td></tr>
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<tr><th><a href="module-dict.html#SourceFile">Source<EFBFBD>File:</a></th><td>mod_auth_digest.c</td></tr></table>
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<h3>Summary</h3>
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    <p>This module implements HTTP Digest Authentication
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    (<a href="http://www.faqs.org/rfcs/rfc2617.html">RFC2617</a>), and
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    provides a more secure alternative to <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code>.</p>
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</div>
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<div id="quickview"><h3 class="directives">Directives</h3>
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<ul id="toc">
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestalgorithm">AuthDigestAlgorithm</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestdomain">AuthDigestDomain</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestnccheck">AuthDigestNcCheck</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestnonceformat">AuthDigestNonceFormat</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestnoncelifetime">AuthDigestNonceLifetime</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestprovider">AuthDigestProvider</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestqop">AuthDigestQop</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authdigestshmemsize">AuthDigestShmemSize</a></li>
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</ul>
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<h3>Topics</h3>
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<ul id="topics">
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<li><img alt="" src="../images/down.gif" /> <a href="#using">Using Digest Authentication</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#msie">Working with MS Internet Explorer</a></li>
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</ul><h3>See also</h3>
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<ul class="seealso">
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<li><code class="directive"><a href="../mod/mod_authn_core.html#authname">AuthName</a></code></li>
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<li><code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code></li>
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<li><code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code></li>
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<li><a href="../howto/auth.html">Authentication howto</a></li>
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</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="using" id="using">Using Digest Authentication</a></h2>
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    <p>To use MD5 Digest authentication, simply
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    change the normal <code>AuthType Basic</code> and
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    <code class="directive"><a href="../mod/mod_auth_basic.html#authbasicprovider">AuthBasicProvider</a></code>
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    to <code>AuthType Digest</code> and
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    <code class="directive"><a href="#authdigestprovider">AuthDigestProvider</a></code>,
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    when setting up authentication, then add a
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    <code class="directive"><a href="#authdigestdomain">AuthDigestDomain</a></code> directive containing at least the root
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    URI(s) for this protection space.</p>
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    <p>Appropriate user (text) files can be created using the
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    <code class="program"><a href="../programs/htdigest.html">htdigest</a></code> tool.</p>
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    <div class="example"><h3>Example:</h3><pre class="prettyprint lang-config">
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<Location /private/>
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    AuthType Digest
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    AuthName "private area"
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    AuthDigestDomain /private/ http://mirror.my.dom/private2/
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    AuthDigestProvider file
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    AuthUserFile /web/auth/.digest_pw
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    Require valid-user
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</Location>
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      </pre>
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</div>
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    <div class="note"><h3>Note</h3>
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    <p>Digest authentication is more secure than Basic authentication,
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    but only works with supporting browsers. As of September 2004, major
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    browsers that support digest authentication include <a href="http://www.w3.org/Amaya/">Amaya</a>, <a href="http://konqueror.kde.org/">Konqueror</a>, <a href="http://www.microsoft.com/windows/ie/">MS Internet Explorer</a>
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    for Mac OS X and Windows (although the Windows version fails when
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    used with a query string -- see "<a href="#msie">Working with MS
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    Internet Explorer</a>" below for a workaround), <a href="http://www.mozilla.org">Mozilla</a>, <a href="http://channels.netscape.com/ns/browsers/download.jsp">
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    Netscape</a> 7, <a href="http://www.opera.com/">Opera</a>, and <a href="http://www.apple.com/safari/">Safari</a>. <a href="http://lynx.isc.org/">lynx</a> does <strong>not</strong>
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    support digest authentication. Since digest authentication is not as
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    widely implemented as basic authentication, you should use it only
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    in environments where all users will have supporting browsers.</p>
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    <p><code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code> only works properly on platforms
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      where APR supports shared memory.</p>
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    </div>
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</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="msie" id="msie">Working with MS Internet Explorer</a></h2>
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    <p>The Digest authentication implementation in previous Internet
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    Explorer for Windows versions (5 and 6) had issues, namely that
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    <code>GET</code> requests with a query string were not RFC compliant.
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    There are a few ways to work around this issue.</p>
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    <p>
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    The first way is to use <code>POST</code> requests instead of
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    <code>GET</code> requests to pass data to your program.  This method
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    is the simplest approach if your application can work with this
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    limitation.
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    </p>
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    <p>Since version 2.0.51 Apache also provides a workaround in the
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    <code>AuthDigestEnableQueryStringHack</code> environment variable.
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    If <code>AuthDigestEnableQueryStringHack</code> is set for the
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    request, Apache will take steps to work around the MSIE bug and
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    remove the query string from the digest comparison.  Using this
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    method would look similar to the following.</p>
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    <div class="example"><h3>Using Digest Authentication with MSIE:</h3><pre class="prettyprint lang-config">
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        BrowserMatch "MSIE" AuthDigestEnableQueryStringHack=On
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    </pre>
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</div>
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    <p>This workaround is not necessary for MSIE 7, though enabling it does
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    not cause any compatibility issues or significant overhead.</p>
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    <p>See the <code class="directive"><a href="../mod/mod_setenvif.html#browsermatch">BrowserMatch</a></code>
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    directive for more details on conditionally setting environment
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    variables.</p>
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AuthDigestAlgorithm" id="AuthDigestAlgorithm">AuthDigestAlgorithm</a> <a name="authdigestalgorithm" id="authdigestalgorithm">Directive</a></h2>
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Selects the algorithm used to calculate the challenge and
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response hashes in digest authentication</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestAlgorithm MD5|MD5-sess</code></td></tr>
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<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDigestAlgorithm MD5</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
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<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
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</table>
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    <p>The <code class="directive">AuthDigestAlgorithm</code> directive
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    selects the algorithm used to calculate the challenge and response
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    hashes.</p>
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    <div class="note">
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      <code>MD5-sess</code> is not correctly implemented yet.
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    </div>
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AuthDigestDomain" id="AuthDigestDomain">AuthDigestDomain</a> <a name="authdigestdomain" id="authdigestdomain">Directive</a></h2>
 | 
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>URIs that are in the same protection space for digest
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authentication</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestDomain <var>URI</var> [<var>URI</var>] ...</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
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<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
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</table>
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    <p>The <code class="directive">AuthDigestDomain</code> directive allows
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    you to specify one or more URIs which are in the same protection
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    space (<em>i.e.</em> use the same realm and username/password info).
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    The specified URIs are prefixes; the client will assume
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    that all URIs "below" these are also protected by the same
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    username/password. The URIs may be either absolute URIs (<em>i.e.</em>
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    including a scheme, host, port, etc.) or relative URIs.</p>
 | 
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    <p>This directive <em>should</em> always be specified and
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    contain at least the (set of) root URI(s) for this space.
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    Omitting to do so will cause the client to send the
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    Authorization header for <em>every request</em> sent to this
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    server. Apart from increasing the size of the request, it may
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    also have a detrimental effect on performance if <code class="directive"><a href="#authdigestnccheck">AuthDigestNcCheck</a></code> is on.</p>
 | 
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    <p>The URIs specified can also point to different servers, in
 | 
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    which case clients (which understand this) will then share
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    username/password info across multiple servers without
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    prompting the user each time. </p>
 | 
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AuthDigestNcCheck" id="AuthDigestNcCheck">AuthDigestNcCheck</a> <a name="authdigestnccheck" id="authdigestnccheck">Directive</a></h2>
 | 
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enables or disables checking of the nonce-count sent by the
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server</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestNcCheck On|Off</code></td></tr>
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<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDigestNcCheck Off</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
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</table>
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    <div class="note">
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      Not implemented yet.
 | 
						||
    </div>
 | 
						||
    
 | 
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AuthDigestNonceFormat" id="AuthDigestNonceFormat">AuthDigestNonceFormat</a> <a name="authdigestnonceformat" id="authdigestnonceformat">Directive</a></h2>
 | 
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<table class="directive">
 | 
						||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Determines how the nonce is generated</td></tr>
 | 
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestNonceFormat <var>format</var></code></td></tr>
 | 
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
 | 
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<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
 | 
						||
</table>
 | 
						||
    <div class="note">Not implemented yet.</div>
 | 
						||
    
 | 
						||
 | 
						||
</div>
 | 
						||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 | 
						||
<div class="directive-section"><h2><a name="AuthDigestNonceLifetime" id="AuthDigestNonceLifetime">AuthDigestNonceLifetime</a> <a name="authdigestnoncelifetime" id="authdigestnoncelifetime">Directive</a></h2>
 | 
						||
<table class="directive">
 | 
						||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>How long the server nonce is valid</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestNonceLifetime <var>seconds</var></code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDigestNonceLifetime 300</code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
 | 
						||
</table>
 | 
						||
    <p>The <code class="directive">AuthDigestNonceLifetime</code> directive
 | 
						||
    controls how long the server nonce is valid. When the client
 | 
						||
    contacts the server using an expired nonce the server will send
 | 
						||
    back a 401 with <code>stale=true</code>. If <var>seconds</var> is
 | 
						||
    greater than 0 then it specifies the amount of time for which the
 | 
						||
    nonce is valid; this should probably never be set to less than 10
 | 
						||
    seconds. If <var>seconds</var> is less than 0 then the nonce never
 | 
						||
    expires. 
 | 
						||
    </p>
 | 
						||
 | 
						||
</div>
 | 
						||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 | 
						||
<div class="directive-section"><h2><a name="AuthDigestProvider" id="AuthDigestProvider">AuthDigestProvider</a> <a name="authdigestprovider" id="authdigestprovider">Directive</a></h2>
 | 
						||
<table class="directive">
 | 
						||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the authentication provider(s) for this location</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestProvider <var>provider-name</var>
 | 
						||
[<var>provider-name</var>] ...</code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDigestProvider file</code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
 | 
						||
</table>
 | 
						||
    <p>The <code class="directive">AuthDigestProvider</code> directive sets
 | 
						||
    which provider is used to authenticate the users for this location.
 | 
						||
    The default <code>file</code> provider is implemented
 | 
						||
    by the <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code> module.  Make sure
 | 
						||
    that the chosen provider module is present in the server.</p>
 | 
						||
 | 
						||
    <p>See <code class="module"><a href="../mod/mod_authn_dbm.html">mod_authn_dbm</a></code>, <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code>,
 | 
						||
    <code class="module"><a href="../mod/mod_authn_dbd.html">mod_authn_dbd</a></code> and <code class="module"><a href="../mod/mod_authn_socache.html">mod_authn_socache</a></code>
 | 
						||
    for providers.</p>
 | 
						||
 | 
						||
</div>
 | 
						||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 | 
						||
<div class="directive-section"><h2><a name="AuthDigestQop" id="AuthDigestQop">AuthDigestQop</a> <a name="authdigestqop" id="authdigestqop">Directive</a></h2>
 | 
						||
<table class="directive">
 | 
						||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Determines the quality-of-protection to use in digest
 | 
						||
authentication</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestQop none|auth|auth-int [auth|auth-int]</code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDigestQop auth</code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
 | 
						||
</table>
 | 
						||
    <p>The <code class="directive">AuthDigestQop</code> directive determines
 | 
						||
    the <dfn>quality-of-protection</dfn> to use. <code>auth</code> will
 | 
						||
    only do authentication (username/password); <code>auth-int</code> is
 | 
						||
    authentication plus integrity checking (an MD5 hash of the entity
 | 
						||
    is also computed and checked); <code>none</code> will cause the module
 | 
						||
    to use the old RFC-2069 digest algorithm (which does not include
 | 
						||
    integrity checking). Both <code>auth</code> and <code>auth-int</code> may
 | 
						||
    be specified, in which the case the browser will choose which of
 | 
						||
    these to use. <code>none</code> should only be used if the browser for
 | 
						||
    some reason does not like the challenge it receives otherwise.</p>
 | 
						||
 | 
						||
    <div class="note">
 | 
						||
      <code>auth-int</code> is not implemented yet.
 | 
						||
    </div>
 | 
						||
 | 
						||
</div>
 | 
						||
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
 | 
						||
<div class="directive-section"><h2><a name="AuthDigestShmemSize" id="AuthDigestShmemSize">AuthDigestShmemSize</a> <a name="authdigestshmemsize" id="authdigestshmemsize">Directive</a></h2>
 | 
						||
<table class="directive">
 | 
						||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>The amount of shared memory to allocate for keeping track
 | 
						||
of clients</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestShmemSize <var>size</var></code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDigestShmemSize 1000</code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_digest</td></tr>
 | 
						||
</table>
 | 
						||
    <p>The <code class="directive">AuthDigestShmemSize</code> directive defines
 | 
						||
    the amount of shared memory, that will be allocated at the server
 | 
						||
    startup for keeping track of clients. Note that the shared memory
 | 
						||
    segment cannot be set less than the space that is necessary for
 | 
						||
    tracking at least <em>one</em> client. This value is dependant on your
 | 
						||
    system. If you want to find out the exact value, you may simply
 | 
						||
    set <code class="directive">AuthDigestShmemSize</code> to the value of
 | 
						||
    <code>0</code> and read the error message after trying to start the
 | 
						||
    server.</p>
 | 
						||
 | 
						||
    <p>The <var>size</var> is normally expressed in Bytes, but you
 | 
						||
    may follow the number with a <code>K</code> or an <code>M</code> to
 | 
						||
    express your value as KBytes or MBytes. For example, the following
 | 
						||
    directives are all equivalent:</p>
 | 
						||
 | 
						||
<pre class="prettyprint lang-config">
 | 
						||
AuthDigestShmemSize 1048576
 | 
						||
AuthDigestShmemSize 1024K
 | 
						||
AuthDigestShmemSize 1M
 | 
						||
    </pre>
 | 
						||
 | 
						||
 | 
						||
</div>
 | 
						||
</div>
 | 
						||
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<p><span>Available Languages: </span><a href="../en/mod/mod_auth_digest.html" title="English"> en </a> |
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<a href="../fr/mod/mod_auth_digest.html" hreflang="fr" rel="alternate" title="Fran<61>ais"> fr </a> |
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<a href="../ko/mod/mod_auth_digest.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
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