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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@330612 c90b9560-bf6c-de11-be94-00142212c4b1
105 lines
3.2 KiB
XML
105 lines
3.2 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<appendix xml:id="password.constants" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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&reftitle.constants;
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&extension.constants.core;
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<para>
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<variablelist>
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<varlistentry xml:id="constant.password-bcrypt">
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<term>
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<constant>PASSWORD_BCRYPT</constant>
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(<type>integer</type>)
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</term>
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<listitem>
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<para>
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<constant>PASSWORD_BCRYPT</constant> is used to create new password
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hashes using the <constant>CRYPT_BLOWFISH</constant> algorithm.
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</para>
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<para>
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This will always result in a hash using the "$2y$" crypt format,
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which is always 60 characters wide.
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</para>
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<para>
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Supported Options:
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</para>
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<itemizedlist>
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<listitem>
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<para>
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<literal>salt</literal> - to manually provide a salt to use when hashing the password.
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Note that this will override and prevent a salt from being automatically generated.
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</para>
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<para>
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If omitted, a random salt will be generated by <function>password_hash</function> for
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each password hashed. This is the intended mode of operation.
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</para>
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</listitem>
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<listitem>
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<para>
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<literal>cost</literal> - which denotes the algorithmic cost that should be used.
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Examples of these values can be found on the <function>crypt</function> page.
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</para>
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<para>
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If ommitted, a default value of <literal>10</literal> will be used. This is a good
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baseline cost, but you may want to consider increasing it depending on your hardware.
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</para>
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</listitem>
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</itemizedlist>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="constant.password-default">
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<term>
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<constant>PASSWORD_DEFAULT</constant>
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(<type>integer</type>)
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</term>
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<listitem>
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<para>
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The default algorithm to use for hashing if no algorithm is provided.
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This may change in newer PHP releases when newer, stronger hashing
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algorithms are supported.
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</para>
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<para>
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It is worth noting that over time this constant can (and likely will)
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change. Therefore you should be aware that the length of the resulting
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hash can change. Therefore, if you use <constant>PASSWORD_DEFAULT</constant>
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you should store the resulting hash in a way that can store more than 60
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characters (255 is the recomended width).
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</para>
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<para>
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Values for this constant:
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</para>
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<itemizedlist>
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<listitem>
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<simpara>
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PHP 5.5.0 - <constant>PASSWORD_BCRYPT</constant>
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</simpara>
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</listitem>
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</itemizedlist>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</appendix>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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