/**
* Generate a nonce based on the given $max
*
* {@inheritDoc}
* @see \Mdanter\Ecc\Random\RandomNumberGeneratorInterface::generate()
*/
public function generate($max)
{
if (is_null($this->result)) {
$v = NumberSize::getCeiledByteSize($this->math, $max);
while (true) {
$hex = bin2hex($this->bytes($v));
$rand = $this->math->hexDec($hex);
// Check k is between [1, ... $max]
if ($this->math->cmp(1, $rand) <= 0 && $this->math->cmp($rand, $max) < 0) {
break;
}
// Otherwise derive another and try again.
$this->update(chr(0));
}
$this->result = $rand;
}
return $this->result;
}
