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<?php |
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declare(strict_types=1); |
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namespace BitWasp\Bitcoin\Serializer\Key\HierarchicalKey; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Adapter\EcAdapterInterface; |
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use BitWasp\Bitcoin\Key\Deterministic\HdPrefix\GlobalPrefixConfig; |
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use BitWasp\Bitcoin\Key\Deterministic\HierarchicalKey; |
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use BitWasp\Bitcoin\Key\KeyToScript\Factory\P2pkhScriptDataFactory; |
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use BitWasp\Bitcoin\Key\PrivateKeyFactory; |
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use BitWasp\Bitcoin\Key\PublicKeyFactory; |
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use BitWasp\Bitcoin\Network\NetworkInterface; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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use BitWasp\Buffertools\Exceptions\ParserOutOfRange; |
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use BitWasp\Buffertools\Parser; |
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class ExtendedKeySerializer |
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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 RawExtendedKeySerializer |
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*/ |
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private $rawSerializer; |
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/** |
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* @var P2pkhScriptDataFactory |
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*/ |
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private $defaultScriptFactory; |
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/** |
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* @var GlobalPrefixConfig |
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*/ |
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private $prefixConfig; |
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/** |
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* @param EcAdapterInterface $ecAdapter |
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* @param GlobalPrefixConfig|null $config |
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*/ |
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public function __construct(EcAdapterInterface $ecAdapter, GlobalPrefixConfig $config = null) |
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{ |
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$this->ecAdapter = $ecAdapter; |
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$this->rawSerializer = new RawExtendedKeySerializer($ecAdapter); |
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$this->defaultScriptFactory = new P2pkhScriptDataFactory(); |
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$this->prefixConfig = $config; |
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} |
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/** |
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* @param NetworkInterface $network |
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* @param HierarchicalKey $key |
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* @return BufferInterface |
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*/ |
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public function serialize(NetworkInterface $network, HierarchicalKey $key): BufferInterface |
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{ |
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if (null === $this->prefixConfig) { |
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if ($key->getScriptDataFactory()->getScriptType() !== $this->defaultScriptFactory->getScriptType()) { |
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throw new \InvalidArgumentException("Cannot serialize non-P2PKH HierarchicalKeys without a GlobalPrefixConfig"); |
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} |
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$privatePrefix = $network->getHDPrivByte(); |
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$publicPrefix = $network->getHDPubByte(); |
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} else { |
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$scriptConfig = $this->prefixConfig |
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->getNetworkConfig($network) |
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->getConfigForScriptType($key->getScriptDataFactory()->getScriptType()) |
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; |
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$privatePrefix = $scriptConfig->getPrivatePrefix(); |
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$publicPrefix = $scriptConfig->getPublicPrefix(); |
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} |
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if ($key->isPrivate()) { |
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$prefix = $privatePrefix; |
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$keyData = new Buffer("\x00{$key->getPrivateKey()->getBinary()}"); |
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} else { |
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$prefix = $publicPrefix; |
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$keyData = $key->getPublicKey()->getBuffer(); |
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} |
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return $this->rawSerializer->serialize( |
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new RawKeyParams( |
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$prefix, |
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$key->getDepth(), |
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$key->getFingerprint(), |
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$key->getSequence(), |
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$key->getChainCode(), |
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$keyData |
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) |
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); |
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} |
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/** |
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* @param NetworkInterface $network |
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* @param Parser $parser |
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* @return HierarchicalKey |
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* @throws ParserOutOfRange |
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*/ |
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public function fromParser(NetworkInterface $network, Parser $parser): HierarchicalKey |
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{ |
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$params = $this->rawSerializer->fromParser($parser); |
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if (null === $this->prefixConfig) { |
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if (!($params->getPrefix() === $network->getHDPubByte() || $params->getPrefix() === $network->getHDPrivByte())) { |
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throw new \InvalidArgumentException('HD key magic bytes do not match network magic bytes'); |
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} |
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$privatePrefix = $network->getHDPrivByte(); |
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$scriptFactory = $this->defaultScriptFactory; |
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} else { |
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$scriptConfig = $this->prefixConfig |
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->getNetworkConfig($network) |
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->getConfigForPrefix($params->getPrefix()) |
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; |
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$privatePrefix = $scriptConfig->getPrivatePrefix(); |
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$scriptFactory = $scriptConfig->getScriptDataFactory(); |
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} |
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if ($params->getPrefix() === $privatePrefix) { |
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$key = PrivateKeyFactory::fromBuffer($params->getKeyData()->slice(1), true, $this->ecAdapter); |
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} else { |
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$key = PublicKeyFactory::fromBuffer($params->getKeyData(), $this->ecAdapter); |
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} |
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return new HierarchicalKey( |
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$this->ecAdapter, |
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$scriptFactory, |
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$params->getDepth(), |
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$params->getParentFingerprint(), |
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$params->getSequence(), |
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$params->getChainCode(), |
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$key |
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); |
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} |
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/** |
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* @param NetworkInterface $network |
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* @param BufferInterface $buffer |
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* @return HierarchicalKey |
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* @throws ParserOutOfRange |
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*/ |
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public function parse(NetworkInterface $network, BufferInterface $buffer): HierarchicalKey |
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{ |
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return $this->fromParser($network, new Parser($buffer)); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
