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<?php |
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namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Serializer\Key; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Adapter\EcAdapter; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Key\PublicKey; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Serializer\Key\PublicKeySerializerInterface; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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use BitWasp\Buffertools\Parser; |
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class PublicKeySerializer implements PublicKeySerializerInterface |
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{ |
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/** |
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* @var EcAdapter |
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*/ |
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private $ecAdapter; |
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/** |
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* @param EcAdapter $ecAdapter |
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*/ |
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public function __construct(EcAdapter $ecAdapter) |
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{ |
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$this->ecAdapter = $ecAdapter; |
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} |
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/** |
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* @param PublicKey $publicKey |
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* @return BufferInterface |
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*/ |
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private function doSerialize(PublicKey $publicKey) |
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{ |
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$serialized = ''; |
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$isCompressed = $publicKey->isCompressed(); |
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if (!secp256k1_ec_pubkey_serialize( |
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$this->ecAdapter->getContext(), |
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$serialized, |
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$publicKey->getResource(), |
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$isCompressed |
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)) { |
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throw new \RuntimeException('Secp256k1: Failed to serialize public key'); |
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} |
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return new Buffer( |
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$serialized, |
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$isCompressed ? PublicKey::LENGTH_COMPRESSED : PublicKey::LENGTH_UNCOMPRESSED, |
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$this->ecAdapter->getMath() |
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); |
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} |
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/** |
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* @param PublicKeyInterface $publicKey |
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* @return BufferInterface |
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*/ |
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public function serialize(PublicKeyInterface $publicKey) |
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{ |
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/** @var PublicKey $publicKey */ |
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return $this->doSerialize($publicKey); |
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} |
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/** |
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* @param \BitWasp\Buffertools\BufferInterface|string $data |
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* @return PublicKey |
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*/ |
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public function parse($data) |
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{ |
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$buffer = (new Parser($data))->getBuffer(); |
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$binary = $buffer->getBinary(); |
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$pubkey_t = ''; |
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/** @var resource $pubkey_t */ |
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if (!secp256k1_ec_pubkey_parse($this->ecAdapter->getContext(), $pubkey_t, $binary)) { |
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throw new \RuntimeException('Secp256k1 failed to parse public key'); |
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} |
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return new PublicKey( |
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$this->ecAdapter, |
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$pubkey_t, |
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$buffer->getSize() === 33 |
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); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
