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Remove obsolete mcrypt example

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Closes GH-717.
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Kamil Tekiela 2021-06-23 22:51:59 +01:00 committed by GitHub
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1
reference/mcrypt/book.xml
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@ -41,7 +41,6 @@
&reference.mcrypt.setup;
&reference.mcrypt.constants;
&reference.mcrypt.ciphers;
&reference.mcrypt.examples;
&reference.mcrypt.reference;
</book>

61
reference/mcrypt/examples.xml
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@ -1,61 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<appendix xml:id="mcrypt.examples" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
&reftitle.examples;
<para>
Mcrypt can be used to encrypt and decrypt using the above
mentioned ciphers. If you linked against <literal>libmcrypt-2.2.x</literal>, the
four important mcrypt commands (<function>mcrypt_cfb</function>,
<function>mcrypt_cbc</function>, <function>mcrypt_ecb</function>,
and <function>mcrypt_ofb</function>) can operate in both modes
which are named <constant>MCRYPT_ENCRYPT</constant> and
<constant>MCRYPT_DECRYPT</constant>, respectively.
</para>
<para>
If you linked against libmcrypt 2.4.x or 2.5.x, these functions are still
available, but it is recommended that you use the advanced functions.
<example>
<title>Encrypt an input value with <literal>AES</literal> with a 256-bit key under 2.4.x and higher in <literal>CBC</literal> mode</title>
<programlisting role="php">
<![CDATA[
<?php
$key = hash('sha256', 'this is a secret key', true);
$input = "Let us meet at 9 o'clock at the secret place.";
$td = mcrypt_module_open('rijndael-128', '', 'cbc', '');
$iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_DEV_URANDOM);
mcrypt_generic_init($td, $key, $iv);
$encrypted_data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
?>
]]>
</programlisting>
</example>
This example will give you the encrypted data as a string in
<literal>$encrypted_data</literal>. For a full example see
<function>mcrypt_module_open</function>.
</para>
</appendix>
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