/**
* @param TransactionOutputInterface $txOutput
* @return OutputBuf
*/
private function outputToBuf(TransactionOutputInterface $txOutput)
{
$output = new OutputBuf();
$output->setScript($txOutput->getScript()->getBuffer()->getBinary());
$output->setAmount($txOutput->getValue());
return $output;
}
/**
* @param PrivateKeyInterface $key
* @param ScriptInterface $scriptCode
* @param int $sigVersion
* @return TransactionSignature
*/
public function calculateSignature(PrivateKeyInterface $key, ScriptInterface $scriptCode, $sigVersion)
{
if ($sigVersion == 1) {
$hasher = new V1Hasher($this->tx, $this->txOut->getValue());
} else {
$hasher = new Hasher($this->tx);
}
$hash = $hasher->calculate($scriptCode, $this->nInput, $this->sigHashType);
return new TransactionSignature($this->ecAdapter, $this->ecAdapter->sign($hash, $key, new Rfc6979($this->ecAdapter, $key, $hash, 'sha256')), $this->sigHashType);
}
/**
* @param TransactionOutputInterface $output
* @return BufferInterface
*/
public function serialize(TransactionOutputInterface $output)
{
return $this->getTemplate()->write([$output->getValue(), $output->getScript()->getBuffer()]);
}
/**
* @param ConsensusInterface $consensus
* @param int $nInput
* @param TransactionOutputInterface $output
* @return bool
*/
public function checkSignature(ConsensusInterface $consensus, $nInput, TransactionOutputInterface $output)
{
$witnesses = $this->transaction->getWitnesses();
$witness = isset($witnesses[$nInput]) ? $witnesses[$nInput] : null;
return $consensus->verify($this->transaction, $output->getScript(), $nInput, $output->getValue(), $witness);
}
/**
* @param TransactionOutputInterface $output
* @return array
*/
public function convertTxoutToArray(TransactionOutputInterface $output)
{
return ['value' => $output->getValue(), 'scriptPubKey' => $output->getScript()->getHex()];
}
/**
* @param array $array
* @return $this
*/
private function replace(array $array)
{
$this->output = new TransactionOutput(array_key_exists('value', $array) ? $array['value'] : $this->output->getValue(), array_key_exists('script', $array) ? $array['script'] : $this->output->getScript());
return $this;
}
