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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
<appendix xml:id="openssl.certparams" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<title>Key/Certificate parameters</title>
<para>
Quite a few of the openssl functions require a key or a certificate
parameter. PHP 4.0.5 and earlier have to use a key or certificate
<type>resource</type> returned by one of the openssl_get_xxx functions.
Later versions may use one of the following methods:
<itemizedlist>
<listitem>
<para>
Certificates
<orderedlist>
<listitem>
<simpara>
An X.509 resource returned from
<function>openssl_x509_read</function>
</simpara>
</listitem>
<listitem>
<simpara>A string having the format
<filename>file://path/to/cert.pem</filename>; the named file must
contain a PEM encoded certificate
</simpara>
</listitem>
<listitem>
<simpara>
A string containing the content of a certificate, PEM encoded
</simpara>
</listitem>
</orderedlist>
</para>
</listitem>
<listitem>
<para>
Public/Private Keys
<orderedlist>
<listitem>
<simpara>A key resource returned from
<function>openssl_get_publickey</function> or
<function>openssl_get_privatekey</function>
</simpara>
</listitem>
<listitem>
<simpara>For public keys only: an X.509 resource</simpara>
</listitem>
<listitem>
<simpara>A string having the format
<filename>file://path/to/file.pem</filename> - the named file must
contain a PEM encoded certificate/private key (it may contain both)
</simpara>
</listitem>
<listitem>
<simpara>
A string containing the content of a certificate/key, PEM encoded
</simpara>
</listitem>
<listitem>
<simpara>
For private keys, you may also use the syntax
<emphasis>array($key, $passphrase)</emphasis> where $key represents a
key specified using the file:// or textual content notation above, and
$passphrase represents a string containing the passphrase for that
private key
</simpara>
</listitem>
</orderedlist>
</para>
</listitem>
</itemizedlist>
</para>
</appendix>
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