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<HTML><HEAD><TITLE>Basic functionality of a Public Key Infrastructure[TODO]</TITLE><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.55"><LINKREL="HOME"TITLE="The Open–source PKI Book"HREF="ospki-book.htm"><LINKREL="PREVIOUS"TITLE="Certification Authority"HREF="ca.htm"><LINKREL="NEXT"TITLE="Signing of the certificate request by the Certification Authority"HREF="x161.htm"></HEAD><BODYCLASS="CHAPTER"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="ca.htm">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom"></TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="x161.htm">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="CHAPTER"><H1><ANAME="DESCRIPTION-PKI">Chapter 3. Basic functionality of a Public Key Infrastructure[TODO]</A></H1><DIVCLASS="TOC"><DL><DT><B>Table of Contents</B></DT><DT><AHREF="description-pki.htm#AEN156">Creation of the key–pair and the certificate request</A></DT><DT><AHREF="x161.htm">Signing of the certificate request by the Certification Authority</A></DT><DT><AHREF="x164.htm">Certification Authority chains</A></DT><DT><AHREF="x169.htm">Typical uses of public key cryptography</A></DT></DL></DIV><P> Alice wants to communicate securely with Bob. In essence, this means that Alice does not want someone else to listen to the conversation, wants the information sent to Bob not to be altered on their way to him and finally she would possibly like a mechanism to prove that she had this conversation, in case, for some reason, claim he did not. We shall describe all the steps necessary to establish communication using the Certification Authority. </P><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="AEN156">Creation of the key–pair and the certificate request</A></H1><P> Alice creates a public/private key pair using a public key algorithm like <SPANCLASS="ACRONYM">RSA</SPAN>. Then, she creates a certificate request, which is the Certificate just prior to signing by the Certification Authority. First, the certificate request contains information about the identity of the user, such as the name, address, telephone number and e–mail address. Second, it contains her public key. Certificates can be used to authenticate not only people but also entities in general, such as a WWW server or a network device. In the latter case, the information in the Certificate would be the <SPANCLASS="ACRONYM">URL</SPAN> of the WWW server, the WWW Administrator details, and so on. </P></DIV></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLEWIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="ca.htm">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ospki-book.htm">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="x161.htm">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Certification Authority</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"> </TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Signing of the certificate request by the Certification Authority</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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