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php

--TEST--
mcrypt_decrypt
--SKIPIF--
<?php if (!extension_loaded("mcrypt")) print "skip"; ?>
--FILE--
<?php
$key      = "FooBar";
$secret   = "PHP Testfest 2008";
$mode     = MCRYPT_MODE_CBC;
$cipher   = MCRYPT_RIJNDAEL_128;

$iv       = mcrypt_create_iv(mcrypt_get_iv_size($cipher, $mode), MCRYPT_RAND);
$enc_data = mcrypt_encrypt($cipher, $key, $secret, $mode, $iv);

// we have to trim as AES rounds the blocks and decrypt doesnt detect that
echo trim(mcrypt_decrypt($cipher, $key, $enc_data, $mode, $iv)) . "\n";

// a warning must be issued if we don't use a IV on a AES cipher, that usually requires an IV
mcrypt_decrypt($cipher, $key, $enc_data, MCRYPT_MODE_CBC);

var_dump(strpos(mcrypt_decrypt(MCRYPT_BLOWFISH, "FooBar", $enc_data, MCRYPT_MODE_CBC, $iv), "Testfest") !== false);
--EXPECTF--
PHP Testfest 2008

Warning: mcrypt_decrypt(): Attempt to use an empty IV, which is NOT recommend in %s on line %d

Warning: mcrypt_decrypt(): The IV parameter must be as long as the blocksize in %s on line %d
bool(false)