1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!ENTITY openssl-download-http
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8 | "https://openssl.org/source/openssl-&openssl-version;.tar.gz">
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9 | <!ENTITY openssl-download-ftp
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10 | "ftp://openssl.org/source/openssl-&openssl-version;.tar.gz">
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11 | <!ENTITY openssl-md5sum "ba5f1b8b835b88cadbce9b35ed9531a6">
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12 | <!ENTITY openssl-size "5.2 MB">
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13 | <!ENTITY openssl-buildsize "73 MB (with tests)">
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14 | <!ENTITY openssl-time "1.5 SBU (with tests)">
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15 | ]>
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16 |
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17 | <sect1 id="openssl" xreflabel="OpenSSL-&openssl-version;">
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18 | <?dbhtml filename="openssl.html"?>
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19 |
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20 |
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21 | <title>OpenSSL-&openssl-version;</title>
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22 |
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23 | <indexterm zone="openssl">
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24 | <primary sortas="a-OpenSSL">OpenSSL</primary>
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25 | </indexterm>
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26 |
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27 | <sect2 role="package">
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28 | <title>Introduction to OpenSSL</title>
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29 |
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30 | <para>
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31 | The <application>OpenSSL</application> package contains management tools
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32 | and libraries relating to cryptography. These are useful for providing
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33 | cryptographic functions to other packages, such as
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34 | <application>OpenSSH</application>, email applications and web browsers
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35 | (for accessing HTTPS sites).
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36 | </para>
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37 |
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38 | &lfs81_checked;
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39 |
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40 | <bridgehead renderas="sect3">Package Information</bridgehead>
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41 | <itemizedlist spacing="compact">
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42 | <listitem>
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43 | <para>
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44 | Download (HTTP): <ulink url="&openssl-download-http;"/>
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45 | </para>
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46 | </listitem>
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47 | <listitem>
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48 | <para>
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49 | Download (FTP): <ulink url="&openssl-download-ftp;"/>
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50 | </para>
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51 | </listitem>
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52 | <listitem>
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53 | <para>
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54 | Download MD5 sum: &openssl-md5sum;
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55 | </para>
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56 | </listitem>
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57 | <listitem>
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58 | <para>
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59 | Download size: &openssl-size;
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60 | </para>
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61 | </listitem>
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62 | <listitem>
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63 | <para>
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64 | Estimated disk space required: &openssl-buildsize;
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65 | </para>
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66 | </listitem>
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67 | <listitem>
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68 | <para>
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69 | Estimated build time: &openssl-time;
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70 | </para>
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71 | </listitem>
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72 | </itemizedlist>
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73 |
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74 | <para condition="html" role="usernotes">
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75 | User Notes: <ulink url='&blfs-wiki;/OpenSSL'/>
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76 | </para>
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77 | </sect2>
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78 |
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79 | <sect2 role="installation">
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80 | <title>Installation of OpenSSL</title>
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81 |
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82 | <para>
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83 | Install <application>OpenSSL</application> with the following commands:
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84 | </para>
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85 |
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86 |
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87 | <screen><userinput>./config --prefix=/usr \
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88 | --openssldir=/etc/ssl \
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89 | --libdir=lib \
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90 | shared \
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91 | zlib-dynamic &&
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92 | make</userinput></screen>
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93 |
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94 | <para>
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95 | To test the results, issue: <command>make test</command>.
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96 | </para>
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97 |
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98 | <para>
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99 | If you want to disable installing the static libraries, use this sed:
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100 | </para>
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101 |
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102 | <screen><userinput>sed -i 's# libcrypto.a##;s# libssl.a##;/INSTALL_LIBS/s#libcrypto.a##' Makefile</userinput></screen>
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103 |
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104 | <para>
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105 | Now, as the <systemitem class="username">root</systemitem> user:
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106 | </para>
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107 |
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108 | <!-- dev note: make INSTALL_PREFIX=<DESTDIR> MANDIR=/usr/share/man MANSUFFIX=ssl install -->
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109 |
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110 | <screen role="root"><userinput>make MANSUFFIX=ssl install &&
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111 | mv -v /usr/share/doc/openssl{,-&openssl-version;} &&
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112 | cp -vfr doc/* /usr/share/doc/openssl-&openssl-version;</userinput></screen>
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113 |
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114 | </sect2>
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115 |
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116 | <sect2 role="commands">
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117 | <title>Command Explanations</title>
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118 |
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119 | <para>
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120 | <parameter>shared</parameter>: This parameter forces the creation of
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121 | shared libraries along with the static libraries.
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122 | </para>
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123 |
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124 | <para>
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125 | <parameter>zlib-dynamic</parameter>: This parameter adds
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126 | compression/decompression functionality using the
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127 | <filename class="libraryfile">libz</filename> library.
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128 | </para>
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129 |
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130 | <para>
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131 | <option>no-rc5 no-idea</option>: When added to the
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132 | <command>./config</command> command, this will eliminate the building
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133 | of those encryption methods. Patent licenses may be needed for you to
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134 | utilize either of those methods in your projects.
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135 | </para>
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136 |
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137 | <para>
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138 | <command>make MANSUFFIX=ssl install</command>:
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139 | This command appends an "ssl" suffix to the manual page names to avoid
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140 | conflicts with manual pages installed by other packages.
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141 | </para>
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142 |
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143 | </sect2>
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144 |
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145 | <sect2 role="configuration">
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146 | <title>Configuring OpenSSL</title>
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147 |
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148 | <sect3 id="openssl-config">
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149 | <title>Config Files</title>
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150 |
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151 | <para>
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152 | <filename>/etc/ssl/openssl.cnf</filename>
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153 | </para>
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154 |
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155 | <indexterm zone="openssl openssl-config">
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156 | <primary sortas="e-etc-ssl-openssl.cnf">/etc/ssl/openssl.cnf</primary>
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157 | </indexterm>
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158 |
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159 | </sect3>
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160 |
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161 | <sect3>
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162 | <title>Configuration Information</title>
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163 |
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164 | <para>
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165 | Most users will want to install Certificate Authority Certificates
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166 | for validation of downloaded certificates. For example, these
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167 | certificates can be used by <xref linkend='git'/>,
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168 | <xref linkend='curl'/> or <xref linkend='wget'/> when accessing secure
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169 | (https protocol) sites. To do this, follow the instructions from the
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170 | <xref linkend='cacerts'/> page.
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171 | </para>
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172 |
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173 | <para>
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174 | Users who just want to use <application>OpenSSL</application> for
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175 | providing functions to other programs such as
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176 | <application>OpenSSH</application> and web browsers do not need to worry
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177 | about additional configuration. This is an advanced topic and those
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178 | who do need it would normally be expected to either know how to properly
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179 | update <filename>/etc/ssl/openssl.cnf</filename> or be able to find out
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180 | how to do it.
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181 | </para>
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182 |
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183 | </sect3>
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184 |
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185 | </sect2>
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186 |
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187 | <sect2 role="content">
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188 | <title>Contents</title>
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189 |
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190 | <segmentedlist>
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191 | <segtitle>Installed Programs</segtitle>
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192 | <segtitle>Installed Libraries</segtitle>
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193 | <segtitle>Installed Directories</segtitle>
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194 |
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195 | <seglistitem>
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196 | <seg>
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197 | c_rehash and openssl
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198 | </seg>
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199 | <seg>
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200 | libcrypto.{so,a} and libssl.{so,a}
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201 | </seg>
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202 | <seg>
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203 | /etc/ssl,
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204 | /usr/include/openssl,
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205 | /usr/lib/engines and
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206 | /usr/share/doc/openssl-&openssl-version;
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207 | </seg>
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208 | </seglistitem>
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209 | </segmentedlist>
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210 |
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211 | <variablelist>
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212 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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213 | <?dbfo list-presentation="list"?>
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214 | <?dbhtml list-presentation="table"?>
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215 |
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216 | <varlistentry id="c_rehash">
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217 | <term><command>c_rehash</command></term>
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218 | <listitem>
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219 | <para>
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220 | is a <application>Perl</application> script that scans all files in
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221 | a directory and adds symbolic links to their hash values.
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222 | </para>
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223 | <indexterm zone="openssl c_rehash">
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224 | <primary sortas="b-c_rehash">c_rehash</primary>
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225 | </indexterm>
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226 | </listitem>
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227 | </varlistentry>
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228 |
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229 | <varlistentry id="openssl-prog">
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230 | <term><command>openssl</command></term>
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231 | <listitem>
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232 | <para>
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233 | is a command-line tool for using the various cryptography functions
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234 | of <application>OpenSSL</application>'s crypto library from the
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235 | shell. It can be used for various functions which are documented in
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236 | <command>man 1 openssl</command>.
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237 | </para>
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238 | <indexterm zone="openssl openssl-prog">
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239 | <primary sortas="b-openssl">openssl</primary>
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240 | </indexterm>
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241 | </listitem>
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242 | </varlistentry>
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243 |
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244 | <varlistentry id="libcrypto">
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245 | <term><filename class="libraryfile">libcrypto.{so,a}</filename></term>
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246 | <listitem>
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247 | <para>
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248 | implements a wide range of cryptographic algorithms used in various
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249 | Internet standards. The services provided by this library are used
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250 | by the <application>OpenSSL</application> implementations of SSL,
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251 | TLS and S/MIME, and they have also been used to implement
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252 | <application>OpenSSH</application>,
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253 | <application>OpenPGP</application>, and other cryptographic
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254 | standards.
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255 | </para>
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256 | <indexterm zone="openssl libcrypto">
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257 | <primary sortas="c-libcrypto">libcrypto.{so,a}</primary>
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258 | </indexterm>
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259 | </listitem>
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260 | </varlistentry>
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261 |
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262 | <varlistentry id="libssl">
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263 | <term><filename class="libraryfile">libssl.{so,a}</filename></term>
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264 | <listitem>
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265 | <para>
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266 | implements the Transport Layer Security (TLS v1) protocol.
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267 | It provides a rich API, documentation
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268 | on which can be found by running <command>man 3 ssl</command>.
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269 | </para>
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270 | <indexterm zone="openssl libssl">
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271 | <primary sortas="c-libssl">libssl.{so,a}</primary>
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272 | </indexterm>
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273 | </listitem>
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274 | </varlistentry>
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275 |
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276 | </variablelist>
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277 |
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278 | </sect2>
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279 |
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280 | </sect1>
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