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<?php |
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namespace BitWasp\Bitcoin\Serializer\Key\PrivateKey; |
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use BitWasp\Bitcoin\Base58; |
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use BitWasp\Bitcoin\Bitcoin; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PrivateKeyInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Serializer\Key\PrivateKeySerializerInterface; |
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use BitWasp\Bitcoin\Exceptions\Base58ChecksumFailure; |
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use BitWasp\Bitcoin\Exceptions\InvalidPrivateKey; |
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use BitWasp\Bitcoin\Key\PrivateKeyFactory; |
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use BitWasp\Bitcoin\Math\Math; |
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use BitWasp\Bitcoin\Network\NetworkInterface; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\Buffertools; |
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class WifPrivateKeySerializer |
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{ |
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/** |
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* @var Math |
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*/ |
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private $math; |
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/** |
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* @var PrivateKeySerializerInterface |
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*/ |
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private $keySerializer; |
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/** |
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* @param Math $math |
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* @param PrivateKeySerializerInterface $serializer |
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*/ |
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public function __construct(Math $math, PrivateKeySerializerInterface $serializer) |
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{ |
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$this->math = $math; |
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$this->keySerializer = $serializer; |
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} |
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/** |
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* @param NetworkInterface $network |
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* @param PrivateKeyInterface $privateKey |
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* @return string |
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*/ |
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public function serialize(NetworkInterface $network, PrivateKeyInterface $privateKey) |
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{ |
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$serialized = Buffertools::concat( |
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Buffer::hex($network->getPrivByte(), 1, $this->math), |
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$this->keySerializer->serialize($privateKey) |
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); |
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if ($privateKey->isCompressed()) { |
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$serialized = Buffertools::concat( |
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$serialized, |
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new Buffer("\x01", 1, $this->math) |
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); |
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} |
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return Base58::encodeCheck($serialized); |
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} |
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/** |
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* @param string $wif |
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* @param NetworkInterface|null $network |
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* @return PrivateKeyInterface |
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* @throws Base58ChecksumFailure |
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* @throws InvalidPrivateKey |
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*/ |
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public function parse($wif, NetworkInterface $network = null) |
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{ |
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$network = $network ?: Bitcoin::getNetwork(); |
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$data = Base58::decodeCheck($wif); |
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if ($data->slice(0, 1)->getHex() !== $network->getPrivByte()) { |
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throw new \RuntimeException('WIF prefix does not match networks'); |
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} |
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$payload = $data->slice(1); |
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$size = $payload->getSize(); |
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if (33 === $size) { |
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$compressed = true; |
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$payload = $payload->slice(0, 32); |
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} else if (32 === $size) { |
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$compressed = false; |
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} else { |
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throw new InvalidPrivateKey("Private key should be always be 32 or 33 bytes (depending on if it's compressed)"); |
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} |
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return PrivateKeyFactory::fromInt($payload->getInt(), $compressed); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
