1 | <?xml version="1.0" encoding="UTF-8"?>
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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 |
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8 | <sect1 id="ch-system-libxcrypt" role="wrap">
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9 | <?dbhtml filename="libxcrypt.html"?>
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10 |
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11 | <sect1info condition="script">
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12 | <productname>libxcrypt</productname>
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13 | <productnumber>&libxcrypt-version;</productnumber>
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14 | <address>&libxcrypt-url;</address>
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15 | </sect1info>
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16 |
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17 | <title>Libxcrypt-&libxcrypt-version;</title>
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18 |
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19 | <indexterm zone="ch-system-libxcrypt">
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20 | <primary sortas="a-Libxcrypt">Libxcrypt</primary>
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21 | </indexterm>
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22 |
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23 | <sect2 role="package">
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24 | <title/>
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25 |
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26 | <para>The Libxcrypt package contains a modern library for one-way
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27 | hashing of passwords.</para>
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28 |
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29 | <segmentedlist>
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30 | <segtitle>&buildtime;</segtitle>
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31 | <segtitle>&diskspace;</segtitle>
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32 |
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33 | <seglistitem>
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34 | <seg>&libxcrypt-fin-sbu;</seg>
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35 | <seg>&libxcrypt-fin-du;</seg>
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36 | </seglistitem>
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37 | </segmentedlist>
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38 |
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39 | </sect2>
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40 |
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41 | <sect2 role="installation">
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42 | <title>Installation of Libxcrypt</title>
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43 |
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44 | <para>Prepare Libxcrypt for compilation:</para>
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45 |
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46 | <screen><userinput remap="configure">./configure --prefix=/usr \
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47 | --enable-hashes=strong,glibc \
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48 | --enable-obsolete-api=no \
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49 | --disable-static \
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50 | --disable-failure-tokens</userinput></screen>
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51 |
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52 | <variablelist>
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53 | <title>The meaning of the new configure options:</title>
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54 |
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55 | <varlistentry>
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56 | <term><parameter>--enable-hashes=strong,glibc</parameter></term>
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57 | <listitem>
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58 | <para>Build strong hash algorithms recommended for security use
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59 | cases, and the hash algorithms provided by traditional Glibc
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60 | <systemitem class='library'>libcrypt</systemitem> for
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61 | compatibility.</para>
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62 | </listitem>
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63 | </varlistentry>
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64 |
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65 | <varlistentry>
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66 | <term><parameter>--enable-obsolete-api=no</parameter></term>
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67 | <listitem>
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68 | <para>Disable obsolete API functions. They are not needed for
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69 | a modern Linux system built from source.</para>
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70 | </listitem>
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71 | </varlistentry>
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72 |
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73 | <varlistentry>
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74 | <term><parameter>--disable-failure-tokens</parameter></term>
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75 | <listitem>
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76 | <para>Disable failure token feature. It's needed for
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77 | compatibility with the traditional hash libraries of some
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78 | platforms, but a Linux system based on Glibc does not need
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79 | it.</para>
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80 | </listitem>
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81 | </varlistentry>
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82 | </variablelist>
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83 |
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84 | <para>Compile the package:</para>
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85 |
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86 | <screen><userinput remap="make">make</userinput></screen>
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87 |
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88 | <para>To test the results, issue:</para>
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89 |
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90 | <screen><userinput remap="test">make check</userinput></screen>
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91 |
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92 | <para>Install the package:</para>
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93 |
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94 | <screen><userinput remap="install">make install</userinput></screen>
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95 |
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96 | <note>
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97 |
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98 | <para>The instructions above disabled obsolete API functions since
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99 | no package installed by compiling from sources would link against
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100 | them at runtime. However, the only known binary-only applications
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101 | that link against these functions require ABI version 1. If you must
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102 | have such functions because of some binary-only application or to be
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103 | compliant with LSB, build the package again with the following
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104 | commands:</para>
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105 |
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106 | <screen role="nodump"><userinput>make distclean
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107 | ./configure --prefix=/usr \
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108 | --enable-hashes=strong,glibc \
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109 | --enable-obsolete-api=glibc \
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110 | --disable-static \
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111 | --disable-failure-tokens
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112 | make
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113 | cp -av --remove-destination .libs/libcrypt.so.1* /usr/lib</userinput></screen>
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114 | </note>
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115 |
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116 | </sect2>
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117 |
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118 | <sect2 id="contents-libxcrypt" role="content">
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119 | <title>Contents of Libxcrypt</title>
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120 |
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121 | <segmentedlist>
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122 | <segtitle>Installed libraries</segtitle>
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123 |
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124 | <seglistitem>
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125 | <seg>libcrypt.so</seg>
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126 | </seglistitem>
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127 | </segmentedlist>
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128 |
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129 | <variablelist>
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130 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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131 | <?dbfo list-presentation="list"?>
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132 | <?dbhtml list-presentation="table"?>
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133 |
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134 | <varlistentry id="libcrypt">
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135 | <term><filename class="libraryfile">libcrypt</filename></term>
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136 | <listitem>
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137 | <para>Contains functions to hash passwords</para>
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138 | <indexterm zone="ch-system-libxcrypt libcrypt">
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139 | <primary sortas="c-libcrypt">libcrypt</primary>
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140 | </indexterm>
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141 | </listitem>
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142 | </varlistentry>
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143 |
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144 | </variablelist>
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145 |
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146 | </sect2>
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147 |
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148 | </sect1>
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