/**
* @param CompactSignature $signature
* @param Buffer $messageHash
* @return \BitWasp\Bitcoin\Key\PublicKey
* @throws \Exception
*/
public function recoverCompact(Buffer $messageHash, CompactSignature $signature)
{
$pubkey = '';
$ret = \secp256k1_ecdsa_recover_compact($messageHash->getBinary(), $signature->getBuffer()->slice(1)->getBinary(), (int) $signature->getRecoveryId(), (int) $signature->isCompressed(), $pubkey);
if ($ret === 1) {
$publicKey = PublicKeyFactory::fromHex(bin2hex($pubkey));
return $publicKey->setCompressed($signature->isCompressed());
}
throw new \Exception('Unable to recover public key from compact signature');
}
