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<HTML><HEAD><TITLE>Single Sign–on</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.55"><LINKREL="HOME"TITLE="The Open–source PKI Book"HREF="ospki-book.htm"><LINKREL="UP"TITLE="Supported Crypto hardware and Software architectures"HREF="hardware-software-supported.htm"><LINKREL="PREVIOUS"TITLE="Common Data Security Architecture (CDSA)"HREF="cdsa.htm"><LINKREL="NEXT"TITLE="The KeyMan PKI Management Tool"HREF="software-keyman.htm"></HEAD><BODYCLASS="SECT1"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">The Open–source PKI Book: A guide to PKIs and Open–source Implementations</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="cdsa.htm">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 9. Supported Crypto hardware and Software architectures</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="software-keyman.htm">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="SOFTWARE-PAM">Single Sign–on</A></H1><P> Single Sign–On (<SPANCLASS="ACRONYM">SSO</SPAN>) is a mechanism whereby a single initial action of user authentication and authorisation can permit the user to access all computer resources where she has access persmission without the need to authenticate/authorise subsequent times. </P><P> Among the benefits of SSO is the transparency of usage of a computer system where full access control takes place but the user is not encumbered by repeated authentications and authorisations. SSO in a nutshell requires applications to use a common security mechanism and make use of the user credentials for all the session access control requirements. </P><P> The <AHREF="http://www.opengroup.org"TARGET="_top">The Open Group</A> has standardised the Pluggable Authentication Mechanism (PAM) and the corresponding standard is available at the <AHREF="http://www.opengroup.org/publications/catalog/p702.htm"TARGET="_top"> X/Open Single Sign-On Service (XSSO)</A> page. A general description of the SSO standard can be found at the <AHREF="http://www.opengroup.org/security/sso/index.htm"TARGET="_top"> Single Sign-On</A> page. </P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="cdsa.htm">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ospki-book.htm">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="software-keyman.htm">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Common Data Security Architecture (<SPANCLASS="ACRONYM">CDSA</SPAN>)</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="hardware-software-supported.htm">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">The KeyMan PKI Management Tool</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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