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<?php |
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declare(strict_types=1); |
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namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\Secp256k1\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\Serializer\Signature\CompactSignatureSerializer; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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class CompactSignature extends Signature implements CompactSignatureInterface |
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{ |
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/** |
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* @var resource |
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*/ |
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private $resource; |
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/** |
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* @var bool |
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*/ |
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private $compressed; |
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/** |
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* @var int |
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*/ |
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private $recid; |
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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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* @param resource $secp256k1_ecdsa_signature_t |
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* @param int $recid |
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* @param bool $compressed |
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*/ |
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public function __construct(EcAdapter $ecAdapter, $secp256k1_ecdsa_signature_t, int $recid, bool $compressed) |
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{ |
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$math = $ecAdapter->getMath(); |
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if (!is_bool($compressed)) { |
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throw new \InvalidArgumentException('CompactSignature: compressed must be a boolean'); |
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} |
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if (!is_resource($secp256k1_ecdsa_signature_t) |
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|| SECP256K1_TYPE_RECOVERABLE_SIG !== get_resource_type($secp256k1_ecdsa_signature_t) |
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) { |
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throw new \RuntimeException('CompactSignature: must pass recoverable signature resource'); |
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} |
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$ser = ''; |
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$recidout = ''; |
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secp256k1_ecdsa_recoverable_signature_serialize_compact($ecAdapter->getContext(), $secp256k1_ecdsa_signature_t, $ser, $recidout); |
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list ($r, $s) = array_map( |
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function ($val) use ($math) { |
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return (new Buffer($val))->getGmp(); |
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}, |
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str_split($ser, 32) |
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); |
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$this->resource = $secp256k1_ecdsa_signature_t; |
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$this->recid = $recid; |
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$this->compressed = $compressed; |
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$this->ecAdapter = $ecAdapter; |
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parent::__construct($ecAdapter, $r, $s, $secp256k1_ecdsa_signature_t); |
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} |
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/** |
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* @return Signature |
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*/ |
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public function convert(): Signature |
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{ |
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$sig_t = ''; |
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/** @var resource $sig_t */ |
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secp256k1_ecdsa_recoverable_signature_convert($this->ecAdapter->getContext(), $sig_t, $this->resource); |
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return new Signature($this->ecAdapter, $this->getR(), $this->getS(), $sig_t); |
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} |
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/** |
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* @return resource |
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*/ |
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public function getResource() |
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{ |
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return $this->resource; |
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} |
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/** |
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* @return int |
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*/ |
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public function getRecoveryId(): int |
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{ |
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return $this->recid; |
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} |
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/** |
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* @return int |
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*/ |
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public function getFlags(): int |
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{ |
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return $this->getRecoveryId() + 27 + ($this->isCompressed() ? 4 : 0); |
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} |
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/** |
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* @return bool |
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*/ |
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public function isCompressed(): bool |
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{ |
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return $this->compressed; |
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} |
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/** |
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* @return BufferInterface |
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*/ |
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public function getBuffer(): BufferInterface |
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{ |
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return (new CompactSignatureSerializer($this->ecAdapter))->serialize($this); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
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