| public static randomInts32 ( integer $numInts, callable $cb, integer $pri, boolean $hang = false ) : integer | ||
| $numInts | integer | Number of integers |
| $cb | callable | Callback |
| $pri | integer | Priority of EIO operation |
| $hang | boolean | If true, we shall use /dev/random instead of /dev/urandom and it may cause a delay |
| return | integer | |
public static function randomInts32($numInts, $cb, $pri = 0, $hang = false)
{
static::randomBytes(4 * $numInts, function ($bytes) use($cb, $numInts) {
if ($bytes === false) {
$cb(false);
return;
}
$ints = [];
for ($i = 0; $i < $numInts; ++$i) {
$thisInt = 0;
for ($j = 0; $j < 4; ++$j) {
$thisInt = $thisInt << 8 | ord($bytes[$i * 4 + $j]) & 0xff;
}
// Absolute value in two's compliment (with min int going to zero)
$thisInt = $thisInt & 0xffffffff;
$ints[] = $thisInt;
}
$cb($ints);
}, $pri, $hang);
} /**
* Constructor
* @return void
*/
public function init()
{
parent::init();
Crypt::randomInts32(1, function ($ints) {
$this->opts['entropy'] = $ints[0];
echo json_encode($this->opts);
$this->finish();
}, 9);
$this->sleep(5, true);
}
