/**
* @param PublicKeyInterface $publicKey
* @return Buffer
*/
public function serialize(PublicKeyInterface $publicKey)
{
$point = $publicKey->getPoint();
$parser = new Parser();
$parser->writeBytes(1, $this->getPrefix($publicKey->isCompressed(), $point));
$math = $this->ecAdapter->getMath();
$publicKey->isCompressed() ? $parser->writeBytes(32, $math->decHex($point->getX())) : $parser->writeBytes(32, $math->decHex($point->getX()))->writeBytes(32, $math->decHex($point->getY()));
return $parser->getBuffer();
}
/**
* @param \BitWasp\Bitcoin\Signature\TransactionSignature $signature
* @param PublicKeyInterface $publicKey
* @return Script
*/
public function payToPubKeyHash(TransactionSignature $signature, PublicKeyInterface $publicKey)
{
return ScriptFactory::create()->push($signature->getBuffer())->push($publicKey->getBuffer());
}
/**
* @param int|string $sequence
* @param bool $change
* @return PrivateKeyInterface|PublicKeyInterface
*/
public function deriveChild($sequence, $change = false)
{
return $this->publicKey->tweakAdd($this->getSequenceOffset($sequence, $change));
}
/**
* @param PublicKeyInterface $publicKey
* @param int|string $integer
* @return \BitWasp\Bitcoin\Key\PublicKey
* @throws \Exception
*/
public function publicKeyMul(PublicKeyInterface $publicKey, $integer)
{
$pubKey = $publicKey->getBuffer()->getBinary();
$ret = (bool) \secp256k1_ec_pubkey_tweak_mul($pubKey, $this->getBinaryScalar($integer));
if ($ret === false) {
throw new \Exception('Secp256k1 pubkey tweak mul: failed');
}
return $this->getRelatedPublicKey($publicKey, $pubKey);
}
/**
* Create a P2PKH output script
*
* @param PublicKeyInterface $public_key
* @return Script
*/
public function payToPubKeyHash(PublicKeyInterface $public_key)
{
return ScriptFactory::create()->op('OP_DUP')->op('OP_HASH160')->push($public_key->getPubKeyHash())->op('OP_EQUALVERIFY')->op('OP_CHECKSIG');
}
/**
* @param PublicKeyInterface $publicKey
* @param $integer
* @return \BitWasp\Bitcoin\Key\PublicKey
*/
public function publicKeyMul(PublicKeyInterface $publicKey, $integer)
{
$newPoint = $publicKey->getPoint()->mul($integer);
return $this->getRelatedPublicKey($publicKey, $newPoint);
}
