Encontré buena ayuda aquí
Tenga en cuenta que esto funciona para texto encriptado de hasta 65519 caracteres en texto sin formato. (tal vez un poco más si no hay codificación UTF-8)
Código PHP para encriptar:
// MySQL uses 16 bytes key for 128 encryption/decryption
$key = "ABCDEF0123456789";
$plaintext = "This string was AES-128 / EBC / ZeroBytePadding encrypted.";
// Optionally UTF-8 encode
$plaintext_utf8 = utf8_encode($plaintext);
// Find out what's your padding
$pad_len = 16 - (strlen($plaintext_utf8) % 16);
// Padd your text
$plaintext_utf8 = str_pad($plaintext_utf8, (16 * (floor(strlen($plaintext_utf8) / 16) + 1)), chr($pad_len));
// Encryption
mt_srand();
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
mcrypt_generic_init($td, $key, false);
// Generates a warning about empty IV but it's Ok
$ciphertext = mcrypt_generic($td, $plaintext_utf8);
mcrypt_generic_deinit($td);
$ciphertext = mysql_real_escape_string($ciphertext);
// Store in MySQL
$mysqli = new mysqli("localhost", "test", "test", "test");
$mysqli->set_charset("utf8");
$mysqli->query("insert into test(content) value ('$ciphertext')");
$mysqli->close();
Consulta SQL para buscar string was :
SELECT CAST(AES_DECRYPT(content,'ABCDEF0123456789') AS CHAR) AS content
FROM test
WHERE CAST(AES_DECRYPT(content,'ABCDEF0123456789') AS CHAR) like '%string was%';
La salida es:
This string was AES-128 / EBC / ZeroBytePadding encrypted.
Nota:la tabla MySQL fue creada por:
create table test (
id int(11) NOT NULL AUTO_INCREMENT PRIMARY KEY,
content blob ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;
