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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>1.1. Description</title><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="Linux-PAM_ADG.html" title="The Linux-PAM Application Developers' Guide"><link rel="up" href="adg-introduction.html" title="Chapter 1. Introduction"><link rel="prev" href="adg-introduction.html" title="Chapter 1. Introduction"><link rel="next" href="adg-introduction-synopsis.html" title="1.2. Synopsis"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">1.1. Description</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="adg-introduction.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Introduction</th><td width="20%" align="right"> <a accesskey="n" href="adg-introduction-synopsis.html">Next</a></td></tr></table><hr></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="adg-introduction-description"></a>1.1. Description</h2></div></div></div><p> <span class="emphasis"><em>Linux-PAM</em></span> (Pluggable Authentication Modules for Linux) is a library that enables the local system administrator to choose how individual applications authenticate users. For an overview of the <span class="emphasis"><em>Linux-PAM</em></span> library see the <span class="emphasis"><em>Linux-PAM System Administrators' Guide</em></span>. </p><p> It is the purpose of the <span class="emphasis"><em>Linux-PAM</em></span> project to liberate the development of privilege granting software from the development of secure and appropriate authentication schemes. This is accomplished by providing a documented library of functions that an application may use for all forms of user authentication management. This library dynamically loads locally configured authentication modules that actually perform the authentication tasks. </p><p> From the perspective of an application developer the information contained in the local configuration of the PAM library should not be important. Indeed it is intended that an application treat the functions documented here as a 'black box' that will deal with all aspects of user authentication. 'All aspects' includes user verification, account management, session initialization/termination and also the resetting of passwords (<span class="emphasis"><em>authentication tokens</em></span>). </p></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="adg-introduction.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="adg-introduction.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="adg-introduction-synopsis.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter 1. Introduction </td><td width="20%" align="center"><a accesskey="h" href="Linux-PAM_ADG.html">Home</a></td><td width="40%" align="right" valign="top"> 1.2. Synopsis</td></tr></table></div></body></html>