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+<div class="CHAPTER">
+<h1>
+<a name="XMLSEC-NOTES-KEYSMNGR"></a>Keys manager.</h1>
+<div class="TOC"><dl>
+<dt><b>Table of Contents</b></dt>
+<dt><a href="xmlsec-notes-keysmngr.html#XMLSEC-NOTES-KEYSMNGR-OVERVIEW">Overview.</a></dt>
+<dt><a href="xmlsec-notes-simple-keys-store.html">Simple keys store.</a></dt>
+<dt><a href="xmlsec-notes-keys-manager-sign-enc.html">Using keys manager for signatures/encryption.</a></dt>
+<dt><a href="xmlsec-notes-keys-mngr-verify-decrypt.html">Using keys manager for verification/decryption.</a></dt>
+<dt><a href="xmlsec-notes-custom-keys-store.html">Implementing a custom keys store.</a></dt>
+</dl></div>
+<br clear="all"><div class="SECT1">
+<h1 class="SECT1"><a name="XMLSEC-NOTES-KEYSMNGR-OVERVIEW">Overview.</a></h1>
+<p>Processing some of the key data objects require additional
+ information which is global across the application (or in the
+ particular area of the application). For example, X509 certificates
+ processing require a common list of trusted certificates to be
+ available. XML Security Library keeps all the common information
+ for key data processing in a a collection of key data stores called
+ "keys manager".
+ </p>
+<div class="FIGURE">
+<a name="AEN353"></a><p><b>Figure 1. The keys manager structure.</b></p>
+<p><img src="images/keysmngr.png" align="CENTER"></p>
+</div>
+<p>Keys manager has a special "keys store" which lists the keys
+ known to the application. This "keys store" is used by XML Security
+ Library to lookup keys by name, type and crypto algorithm (for example,
+ during
+ <a href="http://www.w3.org/TR/xmldsig-core/#sec-KeyName" target="_top">&lt;dsig:KeyName/&gt;</a>
+ processing). The XML Security Library
+ provides default simple "flat list" based implementation of a default keys
+ store. The application can replace it with any other keys store
+ (for example, based on an SQL database).
+ </p>
+<p>Keys manager is the only object in XML Security Library which
+ is supposed to be shared by many different operations. Usually keys
+ manager is initialized once at the application startup and later is
+ used by XML Security library routines in "read-only" mode. If
+ application or crypto function need to modify any of the key data
+ stores inside keys manager then proper synchronization must be
+ implemented. In the same time, application can create a new keys
+ manager each time it needs to perform XML signature, verification,
+ encryption or decryption.
+ </p>
+</div>
+</div>
+<table class="navigation" width="100%" summary="Navigation footer" cellpadding="2" cellspacing="2"><tr valign="middle">
+<td align="left"><a accesskey="p" href="xmlsec-notes-keys.html"><b>&lt;&lt;&lt; Keys.</b></a></td>
+<td align="right"><a accesskey="n" href="xmlsec-notes-simple-keys-store.html"><b>Simple keys store. &gt;&gt;&gt;</b></a></td>
+</tr></table>
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