source: postlfs/security/openssl.xml@ 8890b85f

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY openssl-download-http "http://www.openssl.org/source/openssl-&openssl-version;.tar.gz">
  <!ENTITY openssl-download-ftp  "ftp://ftp.openssl.org/source/openssl-&openssl-version;.tar.gz">
  <!ENTITY openssl-md5sum        "3a7ff24f6ea5cd711984722ad654b927">
  <!ENTITY openssl-size          "3.3 MB">
  <!ENTITY openssl-buildsize     "42 MB">
  <!ENTITY openssl-time          "1.0 SBU (additional 0.3 SBU to run the test suite)">
]>

<sect1 id="openssl" xreflabel="OpenSSL-&openssl-version;">
  <?dbhtml filename="openssl.html"?>

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
  </sect1info>

  <title>OpenSSL-&openssl-version;</title>

  <indexterm zone="openssl">
    <primary sortas="a-OpenSSL">OpenSSL</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to OpenSSL</title>

    <para>The <application>OpenSSL</application> package contains management
    tools and libraries relating to cryptography.  These are useful for
    providing cryptography functions to other packages, notably
    <application>OpenSSH</application>, email applications and web browsers
    (for accessing HTTPS sites).</para>

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>Download (HTTP): <ulink url="&openssl-download-http;"/></para>
      </listitem>
      <listitem>
        <para>Download (FTP): <ulink url="&openssl-download-ftp;"/></para>
      </listitem>
      <listitem>
        <para>Download MD5 sum: &openssl-md5sum;</para>
      </listitem>
      <listitem>
        <para>Download size: &openssl-size;</para>
      </listitem>
      <listitem>
        <para>Estimated disk space required: &openssl-buildsize;</para>
      </listitem>
      <listitem>
        <para>Estimated build time: &openssl-time;</para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">Additional Downloads</bridgehead>
    <itemizedlist spacing='compact'>
      <listitem>
        <para>Required patch: <ulink
        url="&patch-root;/openssl-&openssl-version;-fix_manpages-1.patch"/></para>
      </listitem>
    </itemizedlist>

    <bridgehead renderas="sect3">OpenSSL Dependencies</bridgehead>

    <bridgehead renderas="sect4">Optional</bridgehead>
    <para role="optional"><xref linkend="bc"/> (recommended
    if you run the test suite during the build)</para>

    <para condition="html" role="usernotes">User Notes:
    <ulink url='&blfs-wiki;/OpenSSL'/></para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of OpenSSL</title>

    <!-- <para>To avoid a lot of warnings caused by using a deprecated compilation
    option, run:</para>

<screen><userinput>sed -i -e 's/mcpu/march/' config</userinput></screen> -->

    <para>Install <application>OpenSSL</application> by running
    the following commands:</para>

<screen><userinput>patch -Np1 -i ../openssl-&openssl-version;-fix_manpages-1.patch &amp;&amp;
./config --openssldir=/etc/ssl --prefix=/usr shared &amp;&amp;
make MANDIR=/usr/share/man</userinput></screen>

    <para>To test the results, issue: <command>make test</command>.</para>

    <para>Now, as the <systemitem class="username">root</systemitem> user:</para>

<screen role="root"><userinput>make MANDIR=/usr/share/man install &amp;&amp;
cp -v -r certs /etc/ssl &amp;&amp;
install -v -d -m755 /usr/share/doc/openssl-&openssl-version; &amp;&amp;
cp -v -r doc/{HOWTO,README,*.{txt,html,gif}} \
    /usr/share/doc/openssl-&openssl-version;</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para><option>no-rc5 no-idea</option>: When added to the
    <command>./config</command> command, this will eliminate the building
    of those encryption methods. Patent licenses may be needed for you to
    utilize either of those methods in your projects.</para>

    <para><command>make MANDIR=/usr/share/man; make MANDIR=/usr/share/man
    install</command>: These commands install
    <application>OpenSSL</application> with the man pages in
    <filename class='directory'>/usr/share/man</filename> instead of
    <filename class='directory'>/etc/ssl/man</filename>.</para>

    <para><command>cp -v -r certs /etc/ssl</command>: The certificates must
    be copied manually as the default installation skips this step.</para>

  </sect2>

  <sect2 role="configuration">
    <title>Configuring OpenSSL</title>

    <sect3 id="openssl-config">
      <title>Config Files</title>

      <para><filename>/etc/ssl/openssl.cnf</filename></para>

      <indexterm zone="openssl openssl-config">
        <primary sortas="e-etc-ssl-openssl.cnf">/etc/ssl/openssl.cnf</primary>
      </indexterm>

    </sect3>

    <sect3>
      <title>Configuration Information</title>

      <para>Most people who just want to use <application>OpenSSL</application>
      for providing functions to other programs such as
      <application>OpenSSH</application> and web browsers won't need to worry
      about configuring <application>OpenSSL</application>. Configuring
      <application>OpenSSL</application> is an advanced topic and so those
      who do would normally be expected to either know how to do it or to be
      able to find out how to do it.</para>

    </sect3>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>c_rehash and openssl</seg>
        <seg>libcrypto.{so,a} and libssl.{so,a}</seg>
        <seg>/etc/ssl, /usr/include/ssl, /usr/lib/engines
        and /usr/share/doc/openssl-&openssl-version;</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="c_rehash">
        <term><command>c_rehash</command></term>
        <listitem>
          <para>is a <application>Perl</application> script that scans
          all files in a directory and adds symbolic links to their hash
          values.</para>
          <indexterm zone="openssl c_rehash">
            <primary sortas="b-c_rehash">c_rehash</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="openssl-prog">
        <term><command>openssl</command></term>
        <listitem>
          <para>is a command-line tool for using the various cryptography
          functions of <application>OpenSSL</application>'s crypto
          library from the shell. It can be used for various functions which are
          documented in <command>man 1 openssl</command>.</para>
          <indexterm zone="openssl openssl-prog">
            <primary sortas="b-openssl">openssl</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libcrypto">
        <term><filename class='libraryfile'>libcrypto.{so,a}</filename></term>
        <listitem>
          <para>implements a wide range of cryptographic algorithms used in
          various Internet standards. The services provided by  this library
          are used by the <application>OpenSSL</application> implementations of
          SSL, TLS and S/MIME, and they have also been used to implement
          <application>OpenSSH</application>, <application>OpenPGP</application>,
          and other cryptographic standards.</para>
          <indexterm zone="openssl libcrypto">
            <primary sortas="c-libcrypto">libcrypto.{so,a}</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="libssl">
        <term><filename class='libraryfile'>libssl.{so,a}</filename></term>
        <listitem>
          <para>implements the Secure Sockets Layer (SSL v2/v3) and Transport
          Layer Security (TLS v1) protocols. It provides a rich API, documentation
          on which can be found by running <command>man 3 ssl</command>.</para>
          <indexterm zone="openssl libssl">
            <primary sortas="c-libssl">libssl.{so,a}</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>