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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="phar.setsignaturealgorithm" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>Phar::setSignatureAlgorithm</refname>
<refpurpose>Set the signature algorithm for a phar and apply it</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis role="Phar">
<modifier>public</modifier> <type>void</type><methodname>Phar::setSignatureAlgorithm</methodname>
<methodparam><type>int</type><parameter>algo</parameter></methodparam>
<methodparam choice="opt"><type class="union"><type>string</type><type>null</type></type><parameter>privateKey</parameter><initializer>&null;</initializer></methodparam>
</methodsynopsis>
&phar.write;
<para>
set the signature algorithm for a phar and apply it. The
signature algorithm must be one of <literal>Phar::MD5</literal>,
<literal>Phar::SHA1</literal>, <literal>Phar::SHA256</literal>,
<literal>Phar::SHA512</literal>, or <literal>Phar::OPENSSL</literal>.
</para>
<para>
Note that all executable phar archives have a signature created
automatically, <literal>SHA1</literal> by default. data tar- or zip-based archives
(archives created with the <classname>PharData</classname> class) must have
their signature created and set explicitly via
<function>Phar::setSignatureAlgorithm</function>.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>algo</parameter></term>
<listitem>
<para>
One of <literal>Phar::MD5</literal>,
<literal>Phar::SHA1</literal>, <literal>Phar::SHA256</literal>,
<literal>Phar::SHA512</literal>, or <literal>Phar::OPENSSL</literal>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>privateKey</parameter></term>
<listitem>
<para>
The contents of an OpenSSL private key, as extracted from a certificate or
OpenSSL key file:
<programlisting role="php">
<![CDATA[
<?php
$private = openssl_get_privatekey(file_get_contents('private.pem'));
$pkey = '';
openssl_pkey_export($private, $pkey);
$p->setSignatureAlgorithm(Phar::OPENSSL, $pkey);
?>
]]>
</programlisting>
See <link linkend="phar.using">phar introduction</link> for instructions on
naming and placement of the public key file.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.void;
</para>
</refsect1>
<refsect1 role="errors">
&reftitle.errors;
<para>
Throws <classname>UnexpectedValueException</classname> for many errors,
and a <classname>PharException</classname>
if any problems occur flushing changes to disk.
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.0.0</entry>
<entry>
<parameter>privateKey</parameter> is now nullable.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>Phar::getSupportedSignatures</function></member>
<member><function>Phar::getSignature</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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