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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
| commit | 6beeb1b708550be0d4a53b272283e17e5e35fe17 (patch) | |
| tree | 1ce8673d4aaa948e5554000101f46536a1e4cc29 /docs/manual/mod/mod_auth_digest.html.en | |
| parent | Initial commit. (diff) | |
| download | apache2-upstream/2.4.57.tar.xz apache2-upstream/2.4.57.zip | |
Adding upstream version 2.4.57.upstream/2.4.57
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docs/manual/mod/mod_auth_digest.html.en')
| -rw-r--r-- | docs/manual/mod/mod_auth_digest.html.en | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/docs/manual/mod/mod_auth_digest.html.en b/docs/manual/mod/mod_auth_digest.html.en new file mode 100644 index 0000000..5e73934 --- /dev/null +++ b/docs/manual/mod/mod_auth_digest.html.en @@ -0,0 +1,298 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> +<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" /> +<!-- + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + This file is generated from xml source: DO NOT EDIT + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + --> +<title>mod_auth_digest - Apache HTTP Server Version 2.4</title> +<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> +<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> +<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" /> +<script src="../style/scripts/prettify.min.js" type="text/javascript"> +</script> + +<link href="../images/favicon.ico" rel="shortcut icon" /></head> +<body> +<div id="page-header"> +<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> +<p class="apache">Apache HTTP Server Version 2.4</p> +<img alt="" src="../images/feather.png" /></div> +<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> +<div id="path"> +<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 2.4</a> > <a href="./">Modules</a></div> +<div id="page-content"> +<div id="preamble"><h1>Apache Module mod_auth_digest</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_auth_digest.html" title="English"> en </a> | +<a href="../fr/mod/mod_auth_digest.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ko/mod/mod_auth_digest.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> +</div> +<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>User authentication using MD5 + Digest Authentication</td></tr> +<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> +<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>auth_digest_module</td></tr> +<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_auth_digest.c</td></tr></table> +<h3>Summary</h3> + + <p>This module implements HTTP Digest Authentication + (<a href="http://www.faqs.org/rfcs/rfc2617.html">RFC2617</a>), and + provides an alternative to <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code> where the + password is not transmitted as cleartext. However, this does + <strong>not</strong> lead to a significant security advantage over + basic authentication. On the other hand, the password storage on the + server is much less secure with digest authentication than with + basic authentication. Therefore, using basic auth and encrypting the + whole connection using <code class="module"><a href="../mod/mod_ssl.html">mod_ssl</a></code> is a much better + alternative.</p> +</div> +<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3>Topics</h3> +<ul id="topics"> +<li><img alt="" src="../images/down.gif" /> <a href="#using">Using Digest Authentication</a></li> +</ul><h3 class="directives">Directives</h3> +<ul id="toc"> +<li><img alt="" src="../images/down.gif" /> <a href="#authdigestalgorithm">AuthDigestAlgorithm</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authdigestdomain">AuthDigestDomain</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authdigestnoncelifetime">AuthDigestNonceLifetime</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authdigestprovider">AuthDigestProvider</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authdigestqop">AuthDigestQop</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authdigestshmemsize">AuthDigestShmemSize</a></li> +</ul> +<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_auth_digest">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_auth_digest">Report a bug</a></li></ul><h3>See also</h3> +<ul class="seealso"> +<li><code class="directive"><a href="../mod/mod_authn_core.html#authname">AuthName</a></code></li> +<li><code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code></li> +<li><code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code></li> +<li><a href="../howto/auth.html">Authentication howto</a></li> +<li><a href="#comments_section">Comments</a></li></ul></div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="using" id="using">Using Digest Authentication</a></h2> + + <p>To use MD5 Digest authentication, configure the location to be + protected as shown in the below example:</p> + + <div class="example"><h3>Example:</h3><pre class="prettyprint lang-config"><Location "/private/"> + AuthType Digest + AuthName "private area" + AuthDigestDomain "/private/" "http://mirror.my.dom/private2/" + + AuthDigestProvider file + AuthUserFile "/web/auth/.digest_pw" + Require valid-user +</Location></pre> +</div> + + <p><code class="directive"><a href="#authdigestdomain">AuthDigestDomain</a></code> + should list the locations that will be protected by this + configuration.</p> + + <p>The password file referenced in the <code class="directive"><a href="#authuserfile">AuthUserFile</a></code> directive may be + created and managed using the <code class="program"><a href="../programs/htdigest.html">htdigest</a></code> tool.</p> + + + <div class="note"><h3>Note</h3> + <p>Digest authentication was intended to be more secure than basic + authentication, but no longer fulfills that design goal. A + man-in-the-middle attacker can trivially force the browser to downgrade + to basic authentication. And even a passive eavesdropper can brute-force + the password using today's graphics hardware, because the hashing + algorithm used by digest authentication is too fast. Another problem is + that the storage of the passwords on the server is insecure. The contents + of a stolen htdigest file can be used directly for digest authentication. + Therefore using <code class="module"><a href="../mod/mod_ssl.html">mod_ssl</a></code> to encrypt the whole connection is + strongly recommended.</p> + <p><code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code> only works properly on platforms + where APR supports shared memory.</p> + </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="AuthDigestAlgorithm" id="AuthDigestAlgorithm">AuthDigestAlgorithm</a> <a name="authdigestalgorithm" id="authdigestalgorithm">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Selects the algorithm used to calculate the challenge and +response hashes in digest authentication</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestAlgorithm MD5|MD5-sess</code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthDigestAlgorithm MD5</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">AuthDigestAlgorithm</code> directive + selects the algorithm used to calculate the challenge and response + hashes.</p> + + <div class="note"> + <code>MD5-sess</code> is not correctly 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="AuthDigestDomain" id="AuthDigestDomain">AuthDigestDomain</a> <a name="authdigestdomain" id="authdigestdomain">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>URIs that are in the same protection space for digest +authentication</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthDigestDomain <var>URI</var> [<var>URI</var>] ...</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">AuthDigestDomain</code> directive allows + you to specify one or more URIs which are in the same protection + space (<em>i.e.</em> use the same realm and username/password info). + The specified URIs are prefixes; the client will assume + that all URIs "below" these are also protected by the same + username/password. The URIs may be either absolute URIs (<em>i.e.</em> + including a scheme, host, port, etc.) or relative URIs.</p> + + <p>This directive <em>should</em> always be specified and + contain at least the (set of) root URI(s) for this space. + Omitting to do so will cause the client to send the + Authorization header for <em>every request</em> sent to this + server.</p> + + <p>The URIs specified can also point to different servers, in + which case clients (which understand this) will then share + username/password info across multiple servers without + prompting the user each time. </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="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 dependent 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> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_auth_digest.html" title="English"> en </a> | +<a href="../fr/mod/mod_auth_digest.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ko/mod/mod_auth_digest.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> +</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. 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