note 117664 deleted from function.mcrypt-decrypt by cmb
| From: | cmb@php.net | Date: | Sat, 18 Jul 2015 09:48:53 +0000 |
| Subject: | note 117664 deleted from function.mcrypt-decrypt by cmb | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-203129@lists.php.net to get a copy of this message | ||
Note Submitter: zaer00t at gmail dot com
----
Funcion para encriptar una cadena de texto utilizando MCRYPT_DEV_URANDOM, generando una cadena
distinta cada vez que se hace el llamado a la funcion.
#!/usr/bin/php -q
<?php
/*
declaramos la variable global $iv para utilizar MCRYPT_DEV_URANDOM cada vez que se haga el
llamado a la funcion totem(,,,)
*/
global $iv;
// funciones para encriptar mensajes de texto
function totem($data,$key,$t)
{
$algorithm = MCRYPT_BLOWFISH;
$mode = MCRYPT_MODE_CBC;
global $iv;
if(!isset($iv)) :
$iv = mcrypt_create_iv(mcrypt_get_iv_size($algorithm, $mode),MCRYPT_DEV_URANDOM);
endif;
$plain_text="";
if($t==1)
{
$encrypted_data = mcrypt_encrypt($algorithm, $key, $data, $mode, $iv);
$plain_text = base64_encode($encrypted_data);
return $plain_text . "\n";
}
else if($t==2)
{
$encrypted_data = base64_decode($data);
$decoded = mcrypt_decrypt($algorithm, $key, $encrypted_data, $mode, $iv);
return $decoded . "\n";
}
}
$a = totem("la vaca gorda","my secret key",1);
echo $a;
$b = totem($a,"my secret key",2);
echo $b;
?>