mirror of
https://github.com/sigmasternchen/php-doc-en
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124 lines
3.3 KiB
XML
124 lines
3.3 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xml:id="function.password-verify" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>password_verify</refname>
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<refpurpose>Verifies that a password matches a hash</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>bool</type><methodname>password_verify</methodname>
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<methodparam><type>string</type><parameter>password</parameter></methodparam>
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<methodparam><type>string</type><parameter>hash</parameter></methodparam>
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</methodsynopsis>
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<para>
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Verifies that the given hash matches the given password.
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<function>password_verify</function> is compatible with <function>crypt</function>.
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Therefore, password hashes created by <function>crypt</function> can be used with
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<function>password_verify</function>.
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</para>
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<para>
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Note that <function>password_hash</function> returns the algorithm, cost and salt
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as part of the returned hash. Therefore, all information that's needed to verify
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the hash is included in it. This allows the verify function to verify the hash
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without needing separate storage for the salt or algorithm information.
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</para>
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<para>
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This function is safe against timing attacks.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<variablelist>
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<varlistentry>
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<term><parameter>password</parameter></term>
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<listitem>
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<para>
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&password.parameter.password;
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>hash</parameter></term>
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<listitem>
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<para>
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&password.parameter.hash;
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns &true; if the password and hash match, or &false; otherwise.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title><function>password_verify</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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// See the password_hash() example to see where this came from.
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$hash = '$2y$07$BCryptRequires22Chrcte/VlQH0piJtjXl.0t1XkA8pw9dMXTpOq';
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if (password_verify('rasmuslerdorf', $hash)) {
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echo 'Password is valid!';
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} else {
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echo 'Invalid password.';
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}
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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Password is valid!
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>password_hash</function></member>
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<member><link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="&url.password.compat;">userland implementation</link></member>
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<member><function>sodium_crypto_pwhash_str_verify</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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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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