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<?php |
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declare(strict_types=1); |
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namespace BitWasp\Bitcoin\Transaction\Factory; |
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use BitWasp\Bitcoin\Bitcoin; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Adapter\EcAdapterInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\EcSerializer; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PrivateKeyInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Serializer\Key\PublicKeySerializerInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Serializer\Signature\DerSignatureSerializerInterface; |
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use BitWasp\Bitcoin\Exceptions\SignerException; |
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use BitWasp\Bitcoin\Serializer\Signature\TransactionSignatureSerializer; |
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use BitWasp\Bitcoin\Transaction\Factory\Checker\CheckerCreator; |
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use BitWasp\Bitcoin\Transaction\Factory\Checker\CheckerCreatorBase; |
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use BitWasp\Bitcoin\Transaction\SignatureHash\SigHash; |
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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 TransactionSignatureSerializer |
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*/ |
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private $sigSerializer; |
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/** |
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* @var PublicKeySerializerInterface |
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*/ |
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private $pubKeySerializer; |
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/** |
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* @var bool |
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*/ |
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private $tolerateInvalidPublicKey = false; |
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/** |
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* @var bool |
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*/ |
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private $padUnsignedMultisigs = false; |
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/** |
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* @var bool |
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*/ |
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private $allowComplexScripts = false; |
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/** |
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* @var CheckerCreatorBase |
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*/ |
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private $checkerCreator; |
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/** |
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* @var InputSignerInterface[] |
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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 = $ecAdapter ?: Bitcoin::getEcAdapter(); |
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$this->sigSerializer = new TransactionSignatureSerializer(EcSerializer::getSerializer(DerSignatureSerializerInterface::class, true, $this->ecAdapter)); |
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$this->pubKeySerializer = EcSerializer::getSerializer(PublicKeySerializerInterface::class, true, $this->ecAdapter); |
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$this->checkerCreator = new CheckerCreator($this->ecAdapter, $this->sigSerializer, $this->pubKeySerializer); |
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} |
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/** |
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* @param CheckerCreatorBase $checker |
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* @return $this |
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* @throws SignerException |
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*/ |
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public function setCheckerCreator(CheckerCreatorBase $checker) |
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{ |
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if (null === $this->signatureCreator) { |
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$this->checkerCreator = $checker; |
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return $this; |
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} else { |
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throw new SignerException("Cannot change CheckerCreator after inputs have been parsed"); |
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} |
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} |
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/** |
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* @param bool $setting |
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* @return $this |
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*/ |
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public function padUnsignedMultisigs(bool $setting) |
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{ |
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$this->padUnsignedMultisigs = $setting; |
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return $this; |
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} |
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/** |
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* @param bool $setting |
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* @return $this |
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*/ |
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public function tolerateInvalidPublicKey(bool $setting) |
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{ |
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$this->tolerateInvalidPublicKey = $setting; |
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return $this; |
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} |
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/** |
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* @param bool $setting |
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* @return $this |
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*/ |
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public function allowComplexScripts(bool $setting) |
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{ |
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$this->allowComplexScripts = $setting; |
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return $this; |
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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 SignData $signData |
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* @param int $sigHashType |
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* @return $this |
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*/ |
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public function sign(int $nIn, PrivateKeyInterface $key, TransactionOutputInterface $txOut, SignData $signData = null, int $sigHashType = SigHash::ALL) |
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{ |
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$input = $this->input($nIn, $txOut, $signData); |
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foreach ($input->getSteps() as $idx => $step) { |
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$input->sign($key, $sigHashType); |
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} |
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return $this; |
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} |
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/** |
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* @param int $nIn |
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* @param TransactionOutputInterface $txOut |
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* @param SignData|null $signData |
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* @return InputSignerInterface |
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*/ |
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public function input(int $nIn, TransactionOutputInterface $txOut, SignData $signData = null): InputSignerInterface |
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{ |
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if (null === $signData) { |
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$signData = new SignData(); |
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} |
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if (!isset($this->signatureCreator[$nIn])) { |
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$checker = $this->checkerCreator->create($this->tx, $nIn, $txOut); |
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$input = new InputSigner($this->ecAdapter, $this->tx, $nIn, $txOut, $signData, $checker, $this->sigSerializer, $this->pubKeySerializer); |
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$input->padUnsignedMultisigs($this->padUnsignedMultisigs); |
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$input->tolerateInvalidPublicKey($this->tolerateInvalidPublicKey); |
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$input->allowComplexScripts($this->allowComplexScripts); |
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$input->extract(); |
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$this->signatureCreator[$nIn] = $input; |
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} |
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return $this->signatureCreator[$nIn]; |
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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(): TransactionInterface |
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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 => $input) { |
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if (isset($this->signatureCreator[$idx])) { |
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$sig = $this->signatureCreator[$idx]->serializeSignatures(); |
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$input->script($sig->getScriptSig()); |
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$witnesses[$idx] = $sig->getScriptWitness(); |
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} |
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} |
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if (count($witnesses) > 0) { |
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$mutable->witness($witnesses); |
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} |
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return $mutable->done(); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
