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<?php |
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namespace BitWasp\Bitcoin\Script\ScriptInfo; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface; |
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use BitWasp\Bitcoin\Script\Classifier\OutputClassifier; |
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use BitWasp\Bitcoin\Script\Script; |
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use BitWasp\Bitcoin\Script\ScriptFactory; |
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use BitWasp\Bitcoin\Script\ScriptInterface; |
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use BitWasp\Bitcoin\Signature\TransactionSignatureInterface; |
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use BitWasp\Buffertools\BufferInterface; |
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class PayToPubkeyHash implements ScriptInfoInterface |
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{ |
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/** |
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* @var ScriptInterface |
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*/ |
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private $script; |
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/** |
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* @var BufferInterface |
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*/ |
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private $hash; |
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/** |
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* @param ScriptInterface $script |
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*/ |
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public function __construct(ScriptInterface $script) |
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{ |
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$this->script = $script; |
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$chunks = $this->script->getScriptParser()->decode(); |
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if (count($chunks) < 5 || !$chunks[2]->isPush()) { |
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throw new \RuntimeException('Malformed pay-to-pubkey-hash script'); |
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} |
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/** @var BufferInterface $hash */ |
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$hash = $chunks[2]->getData(); |
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$this->hash = $hash; |
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} |
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/** |
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* @return string |
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*/ |
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public function classification() |
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{ |
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return OutputClassifier::PAYTOPUBKEYHASH; |
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} |
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/** |
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* @return int |
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*/ |
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public function getRequiredSigCount() |
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{ |
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return 1; |
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} |
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/** |
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* @return int |
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*/ |
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public function getKeyCount() |
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{ |
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return 1; |
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} |
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/** |
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* @param PublicKeyInterface $publicKey |
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* @return bool |
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*/ |
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public function checkInvolvesKey(PublicKeyInterface $publicKey) |
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{ |
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return $publicKey->getPubKeyHash()->getBinary() === $this->hash->getBinary(); |
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} |
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/** |
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* @return PublicKeyInterface[] |
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*/ |
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public function getKeys() |
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{ |
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return []; |
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} |
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/** |
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* @param TransactionSignatureInterface[] $signatures |
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* @param PublicKeyInterface[] $publicKeys |
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* @return Script|ScriptInterface |
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*/ |
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public function makeScriptSig(array $signatures = [], array $publicKeys = []) |
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{ |
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$newScript = new Script(); |
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if (count($publicKeys) > 0 && count($signatures) === $this->getRequiredSigCount()) { |
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$newScript = ScriptFactory::sequence([$signatures[0]->getBuffer(), $publicKeys[0]->getBuffer()]); |
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} |
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return $newScript; |
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} |
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} |
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Bit-Wasp /
bitcoin-php
