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<?php |
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namespace BitWasp\Bitcoin\Transaction\Factory; |
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use BitWasp\Bitcoin\Bitcoin; |
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use BitWasp\Bitcoin\Collection\Transaction\TransactionWitnessCollection; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Adapter\EcAdapterInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PrivateKeyInterface; |
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use BitWasp\Bitcoin\Script\ScriptInterface; |
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use BitWasp\Bitcoin\Transaction\SignatureHash\SigHashInterface; |
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use BitWasp\Bitcoin\Transaction\TransactionFactory; |
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use BitWasp\Bitcoin\Transaction\TransactionInterface; |
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use BitWasp\Bitcoin\Transaction\TransactionOutputInterface; |
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class Signer |
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{ |
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/** |
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* @var EcAdapterInterface |
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*/ |
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private $ecAdapter; |
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/** |
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* @var TransactionInterface |
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*/ |
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private $tx; |
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/** |
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* @var InputSigner |
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*/ |
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private $signatureCreator = []; |
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/** |
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* TxWitnessSigner constructor. |
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* @param TransactionInterface $tx |
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* @param EcAdapterInterface $ecAdapter |
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*/ |
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public function __construct(TransactionInterface $tx, EcAdapterInterface $ecAdapter = null) |
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{ |
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$this->tx = $tx; |
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$this->ecAdapter = $ecAdapter ?: Bitcoin::getEcAdapter(); |
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} |
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/** |
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* @param int $nIn |
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* @param PrivateKeyInterface $key |
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* @param TransactionOutputInterface $txOut |
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* @param ScriptInterface|null $redeemScript |
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* @param ScriptInterface|null $witnessScript |
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* @param int $sigHashType |
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* @return $this |
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*/ |
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public function sign($nIn, PrivateKeyInterface $key, TransactionOutputInterface $txOut, ScriptInterface $redeemScript = null, ScriptInterface $witnessScript = null, $sigHashType = SigHashInterface::ALL) |
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{ |
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if (!isset($this->signatureCreator[$nIn])) { |
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$this->signatureCreator[$nIn] = new InputSigner($this->ecAdapter, $this->tx, $nIn, $txOut, $sigHashType); |
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} |
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if (!$this->signatureCreator[$nIn]->sign($key, $redeemScript, $witnessScript)) { |
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throw new \RuntimeException('Unsignable script'); |
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} |
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return $this; |
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} |
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/** |
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* @return TransactionInterface |
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*/ |
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public function get() |
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{ |
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$mutable = TransactionFactory::mutate($this->tx); |
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$witnesses = []; |
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foreach ($mutable->inputsMutator() as $idx => $input) { |
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$sig = $this->signatureCreator[$idx]->serializeSignatures(); |
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$input->script($sig->getScriptSig()); |
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$witnesses[$idx] = $sig->getScriptWitness(); |
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} |
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if (count($witnesses) > 0) { |
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$mutable->witness(new TransactionWitnessCollection($witnesses)); |
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} |
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$new = $mutable->done(); |
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return $new; |
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} |
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} |
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Bit-Wasp /
bitcoin-php
