mirror of
https://github.com/Zeckmathederg/glfs.git
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52d29f7a42
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2304 af4574ff-66df-0310-9fd7-8a98e5e911e0
177 lines
8.9 KiB
XML
177 lines
8.9 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY openssl-download-http "http://www.openssl.org/source/openssl-&openssl-version;.tar.gz">
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<!ENTITY openssl-download-ftp "ftp://ftp.openssl.org/source/openssl-&openssl-version;.tar.gz">
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<!ENTITY openssl-size "2.7 MB">
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<!ENTITY openssl-buildsize "25 MB">
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<!ENTITY openssl-time "1.16 SBU">
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]>
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<sect1 id="openssl" xreflabel="OpenSSL-&openssl-version;">
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<?dbhtml filename="openssl.html"?>
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<title>OpenSSL-&openssl-version;</title>
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<sect2>
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<title>Introduction to <application>OpenSSL</application></title>
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<para>The <application>OpenSSL</application> package contains management tools
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and libraries relating to cryptography. These are useful for providing
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cryptography functions to other packages, notably <application>OpenSSH
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</application> and web browsers (for accessing secure https sites).</para>
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<sect3><title>Package information</title>
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<itemizedlist spacing='compact'>
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<listitem><para>Download (HTTP): <ulink url="&openssl-download-http;"/></para></listitem>
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<listitem><para>Download (FTP): <ulink url="&openssl-download-ftp;"/></para></listitem>
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<listitem><para>Download size: &openssl-size;</para></listitem>
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<listitem><para>Estimated Disk space required: &openssl-buildsize;</para></listitem>
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<listitem><para>Estimated build time: &openssl-time;</para></listitem></itemizedlist>
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</sect3>
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</sect2>
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<sect2>
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<title>Installation of <application>OpenSSL</application></title>
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<para>Install <application>OpenSSL</application> by running the following commands:</para>
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<screen><userinput><command>sed 's/^passwd/openssl-passwd/' doc/apps/passwd.pod \
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> doc/apps/openssl-passwd.pod &&
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rm doc/apps/passwd.pod &&
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mv doc/crypto/{,openssl_}threads.pod &&
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sed -i -e 's/-m486/-march=i486/' Configure &&
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./config --openssldir=/etc/ssl --prefix=/usr shared &&
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make MANDIR=/usr/share/man &&
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make MANDIR=/usr/share/man install &&
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cp -r certs /etc/ssl &&
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rmdir /etc/ssl/lib</command></userinput></screen>
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</sect2>
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<sect2>
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<title>Command explanations</title>
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<para><option>no-rc5 no-idea</option>: When added to the
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<command>./config</command> command, this will eliminate the building of those
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encryption methods. Patent licenses may be needed for you to utilize either of
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those methods in your projects.</para>
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<para><command>rm doc/apps/passwd.pod</command>: This command prevents
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<application>Open<acronym>SSL</acronym></application> from installing its
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passwd man page over an existing man page with the same name.</para>
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<para><command>mv doc/crypto/{,openssl_}threads.pod</command>: This
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commands prevents <application>Open<acronym>SSL</acronym></application> from
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overwriting an existing man page from <application>Perl</application>.</para>
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<para><command>sed -i -e 's/-m486/-march=i486/' Configure</command>:
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<application>GCC</application> issues a warning on every
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compilation because the <command>Configure</command>
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command uses deprecated <parameter>-m486</parameter> instead of
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<parameter>-march=i486</parameter>.</para>
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<para><screen><command>make MANDIR=/usr/share/man
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make MANDIR=/usr/share/man install</command></screen> These
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commands install <application>OpenSSL</application> with the man pages
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in <filename class='directory'>/usr/share/man</filename> instead of the
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default which is <filename class='directory'>/etc/ssl/man</filename>.</para>
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<para><command>cp -r certs /etc/ssl</command>: The certificates
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must be copied manually since the install script
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skips this step.</para>
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<para><command>rmdir /etc/ssl/lib</command>: This is simply a tidy-up command.
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For some reason, the <application>openssl</application> install routine creates
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the <filename class='directory'>/etc/ssl/lib</filename> directory even though
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the libraries have been installed in
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<filename class='directory'>/usr/lib</filename>. We remove it to keep things
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nice and tidy!</para>
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</sect2>
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<sect2>
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<title>Configuring <application>OpenSSL</application></title>
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<sect3><title>Config files</title>
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<para><filename>/etc/ssl/openssl.cnf</filename></para>
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</sect3>
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<sect3><title>Configuration Information</title>
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<para>Most people who just want to use
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<application>openssl</application> for providing functions
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to other programs such as <application>OpenSSH</application> and web browsers won't need to worry
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about configuring <application>OpenSSL</application>. Configuring
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<application>OpenSSL</application> is an advanced topic and
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so those who do would normally be expected to either know how to do it
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or to be able to find out how to do it.</para>
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</sect3>
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</sect2>
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<sect2>
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<title>Contents</title>
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<para>The <application>Open<acronym>SSL</acronym></application> package contains <command>
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c_rehash</command>, <command>openssl</command>, <filename
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class='libraryfile'>libcrypto</filename> libraries and <filename
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class='libraryfile'>libssl</filename> libraries.</para>
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</sect2>
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<sect2><title>Description</title>
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<sect3><title>c_rehash</title>
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<para><command>c_rehash</command> is a <application>Perl</application> script
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that scans all files in a directory and adds symbolic links to their hash
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values.</para>
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</sect3>
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<sect3><title>openssl</title>
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<para>The <command>openssl</command> program is a command-line tool for using
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the various cryptography functions of
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<application>Open<acronym>SSL</acronym></application>'s
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crypto library from the shell. It can be used for various functions which are
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documented in <command>man 1 openssl</command>.</para>
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</sect3>
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<sect3><title>libcrypto</title>
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<para>The <application>Open<acronym>SSL</acronym></application> crypto library implements a wide
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range of cryptographic algorithms used in various Internet standards. The
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services provided by this library are used by the
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<application>Open<acronym>SSL</acronym>
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</application> implementations of <acronym>SSL</acronym>, <acronym>TLS
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</acronym> and <acronym>S/MIME</acronym>, and they have also been used to
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implement <application>Open<acronym>SSH</acronym></application>,
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<application>Open<acronym>PGP</acronym>
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</application>, and other cryptographic standards.</para>
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</sect3>
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<sect3><title>libssl</title>
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<para>The <application>Open<acronym>SSL</acronym></application> <acronym>SSL</acronym> library
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implements the Secure Sockets Layer (<acronym>SSL</acronym> v2/v3) and
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Transport Layer Security (<acronym>TLS</acronym> v1) protocols. It provides a
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rich <acronym>API</acronym>, documentation on which can be found by running
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<command>man 3 ssl</command>.</para>
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</sect3>
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</sect2>
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</sect1>
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