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<?php declare(strict_types=1); |
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namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Serializer\Signature; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Adapter\EcAdapter; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\Signature\SchnorrSignature; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Serializer\Signature\SchnorrSignatureSerializerInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Signature\SchnorrSignatureInterface; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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class SchnorrSignatureSerializer implements SchnorrSignatureSerializerInterface |
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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 SchnorrSignature $signature |
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* @return BufferInterface |
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*/ |
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private function doSerialize(SchnorrSignature $signature): BufferInterface |
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{ |
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$sigOut = ''; |
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if (!secp256k1_schnorrsig_serialize($this->ecAdapter->getContext(), $sigOut, $signature->getResource())) { |
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throw new \RuntimeException('Secp256k1 serialize compact failure'); |
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} |
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return new Buffer($sigOut, 64); |
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} |
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/** |
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* @param SchnorrSignatureInterface $signature |
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* @return BufferInterface |
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*/ |
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public function serialize(SchnorrSignatureInterface $signature): BufferInterface |
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{ |
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/** @var SchnorrSignature $signature */ |
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return $this->doSerialize($signature); |
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} |
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/** |
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* @param BufferInterface $sig |
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* @return SchnorrSignatureInterface |
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* @throws \Exception |
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*/ |
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public function parse(BufferInterface $sig): SchnorrSignatureInterface |
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{ |
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if ($sig->getSize() !== 64) { |
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throw new \RuntimeException('Compact Sig must be 65 bytes'); |
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} |
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$sig_t = null; |
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if (!secp256k1_schnorrsig_parse($this->ecAdapter->getContext(), $sig_t, $sig->getBinary())) { |
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throw new \RuntimeException('Unable to parse compact signature'); |
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} |
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/** @var resource $sig_t */ |
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return new SchnorrSignature($this->ecAdapter, $sig_t); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
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