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tag openssl
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@892 af4574ff-66df-0310-9fd7-8a98e5e911e0
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Larry Lawrence
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<sect2>
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<title>Configuring Openssl</title>
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<title>Configuring OpenSSL</title>
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<sect3><title>Config files</title>
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<para><userinput>/etc/ssl/openssl.cnf</userinput></para>
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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 openssl for providing functions
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to other programs such as OpenSSH and web browsers won't need to worry
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about configuring openssl. Configuring openssl is an advanced topic and
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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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<title>Contents</title>
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<para>The openssl package contains <userinput>c_rehash</userinput>,
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<userinput>openssl</userinput>, <filename>libcrypto</filename> libraries and
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<filename>libssl</filename> libraries.</para>
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<para>The <application>openssl</application> package contains <command>c_rehash</command>, <command>openssl</command>, <filename>libcrypto</filename> libraries and <filename>libssl</filename> libraries.</para>
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</sect2>
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<sect3><title>c_rehash</title>
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<para>c_rehash is a perl script that scans all files in a directory and
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adds symbolic links to their hash values.</para>
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<para><command>c_rehash</command> is a <application>perl</application> script that scans all files in a directory and adds symbolic links to their hash values.</para>
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</sect3>
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<sect3><title>openssl</title>
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<para>The openssl program is a command line tool for using the various
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cryptography functions of OpenSSL's crypto library from the shell.
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It can be used for various functions which are documented in
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<userinput>man 1 openssl</userinput>.</para>
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<para>The <command>openssl</command> program is a command line tool for using the various cryptography functions of <application>OpenSSL</application>'s crypto
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library from the shell. It can be used for various functions which are 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 OpenSSL crypto library implements a wide range of cryptographic
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algorithms used in various Internet standards. The services provided by
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this library are used by the OpenSSL implementations of SSL, TLS and S/MIME,
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and they have also been used to implement SSH, OpenPGP, and other
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cryptographic standards.</para>
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<para>The <application>OpenSSL</application> crypto library 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 <acronym>SSL</acronym>, <acronym>TLS</acronym> and
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<acronym>S/MIME</acronym>, and they have also been used to implement
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<application>OpenSSH</application>, <application>OpenPGP</application>,
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and other cryptographic standards.</para>
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</sect3>
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<sect3><title>libssl</title>
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<para>The OpenSSL ssl library implements the Secure Sockets Layer (SSL
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v2/v3) and Transport Layer Security (TLS v1) protocols. It provides a rich
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API, documentation on which can be found by running
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<userinput>man 3 ssl</userinput>.</para>
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<para>The <application>OpenSSL</application> <acronym>SSL</acronym> library implements the
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Secure Sockets Layer (<acronym>SSL</acronym> v2/v3) and Transport Layer
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Security (<acronym>TLS</acronym> v1) protocols. It provides a rich
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<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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@ -1,19 +1,21 @@
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<sect2>
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<title>Command explanations</title>
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<para><userinput>rm doc/apps/passwd.pod </userinput> : We do this because otherwise openssl installs its passwd man page over the
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<para><command>rm doc/apps/passwd.pod </command> : We do this because
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otherwise <application>openssl</application> installs its passwd man page over the
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existing system one which isn't what we want.</para>
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<para><screen><userinput>make MANDIR=/usr/share/man</userinput>
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<userinput>make MANDIR=/usr/share/man install</userinput></screen> These
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commands install openssl with the man pages in <filename>/usr/share/man
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</filename> instead of the default which is <filename>/etc/ssl/man</filename>.
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</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
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</filename> instead of the default which is <filename class='directory'>/etc/ssl/man</filename>.</para>
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<para><userinput>rmdir /etc/ssl/lib</userinput> : This is simply a
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tidy-up command. For some reason, the openssl install routine creates
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the <filename>/etc/ssl/lib</filename> directory even though the libraries have
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been installed in <filename>/usr/lib</filename>. We remove it to keep things
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<para><command>rmdir /etc/ssl/lib</command> : This is simply a
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tidy-up command. For some reason, the
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<application>openssl</application> install routine creates
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the <filename class='directory'>/etc/ssl/lib</filename> directory even though the libraries have
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been installed in <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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@ -1,21 +1,21 @@
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<sect2>
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<title>Installation of openssl</title>
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<title>Installation of OpenSSL</title>
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<para>Install openssl by running the following commands:</para>
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<para>Install <application>openssl</application> by running the following commands:</para>
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<note><para>GCC issues a warning on every compilation because the Configure
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<note><para><application>GCC</application> issues a warning on every
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compilation because the <command>Configure</command>
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command uses -m486 instead of -march=i486. To fix this behavior, use
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linux-ppro, linux-pentium or linux-k6 (depending on your architecture), instead of linux-elf.
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</para></note>
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<para><screen><userinput>sed 's/^passwd/openssl-passwd/' doc/apps/passwd.pod \
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<screen><userinput>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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./Configure linux-elf --openssldir=/etc/ssl --prefix=/usr shared &&</userinput>
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<userinput>make MANDIR=/usr/share/man &&</userinput>
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<userinput>make MANDIR=/usr/share/man install &&</userinput>
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<userinput>rmdir /etc/ssl/lib</userinput></screen>
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</para>
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./Configure linux-elf --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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rmdir /etc/ssl/lib</userinput></screen>
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</sect2>
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@ -1,16 +1,18 @@
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<sect2>
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<title>Introduction to openssl</title>
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<title>Introduction to OpenSSL</title>
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<screen>Download location (HTTP): <ulink url="&openssl-download-http;"/>
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Download location (FTP): <ulink url="&openssl-download-ftp;"/>
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Version used: &openssl-version;
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Package size: &openssl-size;
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Estimated Disk space required: &openssl-buildsize;</screen>
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<para>The openssl package contains management tools and libraries relating to
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cryptography. These are useful for providing cryptography functions to
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other packages, notably <application>OpenSSH</application> and web browsers (for accessing secure https sites).</para>
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<para>The openssl package contains <userinput>c_rehash</userinput>,
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<userinput>openssl</userinput>, <userinput>libcrypto</userinput> and
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<userinput>libssl</userinput>. These are useful for providing
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cryptography functions to other packages, notably OpenSSH and web
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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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