/**
* Initialize a new instance.
*
* @param MathAdapterInterface $adapter
* @param GeneratorPoint $generator
* @param PointInterface $point
* @throws \LogicException
* @throws \RuntimeException
*/
public function __construct(MathAdapterInterface $adapter, GeneratorPoint $generator, PointInterface $point)
{
$this->curve = $generator->getCurve();
$this->generator = $generator;
$this->point = $point;
$this->adapter = $adapter;
$n = $generator->getOrder();
if ($n == null) {
throw new \LogicException("Generator must have order.");
}
if (!$point->mul($n)->isInfinity()) {
throw new \RuntimeException("Generator point order is bad.");
}
if ($adapter->cmp($point->getX(), 0) < 0 || $adapter->cmp($n, $point->getX()) <= 0 || $adapter->cmp($point->getY(), 0) < 0 || $adapter->cmp($n, $point->getY()) <= 0) {
throw new \RuntimeException("Generator point has x and y out of range.");
}
}
/**
* @param int|string $tweak
* @return PublicKeyInterface
*/
public function tweakMul($tweak)
{
$point = $this->point->mul($tweak);
return $this->ecAdapter->getPublicKey($point, $this->compressed);
}
