php-doc-en/reference/mcrypt/functions/mcrypt-ofb.xml
2016-01-08 01:35:03 +00:00

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.mcrypt-ofb" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>mcrypt_ofb</refname>
<refpurpose>Encrypts/decrypts data in OFB mode</refpurpose>
</refnamediv>
<refsynopsisdiv>
<warning>
&warn.deprecated.function.5-5-0.removed.7-0-0.alternatives;
<simplelist role="alternatives">
<member><function>mcrypt_decrypt</function></member>
<member><function>mcrypt_encrypt</function></member>
</simplelist>
</warning>
</refsynopsisdiv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</type><methodname>mcrypt_ofb</methodname>
<methodparam><type>int</type><parameter>cipher</parameter></methodparam>
<methodparam><type>string</type><parameter>key</parameter></methodparam>
<methodparam><type>string</type><parameter>data</parameter></methodparam>
<methodparam><type>int</type><parameter>mode</parameter></methodparam>
<methodparam><type>string</type><parameter>iv</parameter></methodparam>
</methodsynopsis>
<methodsynopsis>
<type>string</type><methodname>mcrypt_ofb</methodname>
<methodparam><type>string</type><parameter>cipher</parameter></methodparam>
<methodparam><type>string</type><parameter>key</parameter></methodparam>
<methodparam><type>string</type><parameter>data</parameter></methodparam>
<methodparam><type>int</type><parameter>mode</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>iv</parameter></methodparam>
</methodsynopsis>
<para>
The first prototype is when linked against libmcrypt 2.2.x, the
second when linked against libmcrypt 2.4.x or higher. The
<parameter>mode</parameter> should be either
<constant>MCRYPT_ENCRYPT</constant> or
<constant>MCRYPT_DECRYPT</constant>.
</para>
</refsect1>
</refentry>
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