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<?php $message = 'test'; $key = openssl_random_pseudo_bytes(16); $iv = openssl_random_pseudo_bytes(16); $cipher = mcrypt_encrypt( MCRYPT_RIJNDAEL_128, $key, $message, MCRYPT_MODE_CBC, $iv ); $plain = openssl_decrypt( $cipher, 'aes-128-cbc', $key, OPENSSL_RAW_DATA, $iv ); var_dump( $message, bin2hex($cipher), $plain, mb_strlen($message, '8bit'), mb_strlen($plain, '8bit'), $message === $plain );

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