Encriptación

[aalleexx81]

Muchas gracias aagus. He cambiado el código y ya me funciona.

El código es el siguiente:

function encryptData($encryption_algorithm, $encryption_mode, $random_source, $encryption_key, $raw_data, $iv=null)
{
global $client_iv;

/* Open the cipher */
$td = mcrypt_module_open($encryption_algorithm, '', $encryption_mode, '');

/* Create the IV and determine the keysize length */
$client_iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), $random_source);

if ($iv != null)
$client_iv = $iv;

$ks = mcrypt_enc_get_key_size($td);

/* Create key */
$key = substr(md5($encryption_key), 0, $ks);

/* Intialize encryption */
mcrypt_generic_init($td, $key, $client_iv);

/* Encrypt data */
$encrypted_data = mcrypt_generic($td, $raw_data);

/* Terminate encryption handler */
mcrypt_generic_deinit($td);

//return array($client_iv, $encrypted_data);
return $encrypted_data;
}

/////////////////////////////////////////////////////////////////////

function decryptData($encryption_algorithm, $encryption_mode, $encryption_key, $client_iv, $encrypted_data)
{
/* Open the cipher */
$td = mcrypt_module_open($encryption_algorithm, '', $encryption_mode, '');

$ks = mcrypt_enc_get_key_size($td);

/* Create key */
$key = substr(md5($encryption_key), 0, $ks);

/* Initialize encryption module for decryption */
mcrypt_generic_init($td, $key, $client_iv);

/* Decrypt encrypted string */
$decrypted_data = mdecrypt_generic($td, $encrypted_data);

/* Terminate decryption handle and close module */
mcrypt_generic_deinit($td);
mcrypt_module_close($td);

/* Return string */
return trim($decrypted_data);
}

Saludos