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<?php |
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namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Key; |
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use BitWasp\Bitcoin\Bitcoin; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Adapter\EcAdapter; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Serializer\Key\PrivateKeySerializer; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\Key; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PrivateKeyInterface; |
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use BitWasp\Bitcoin\Crypto\Random\RbgInterface; |
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use BitWasp\Bitcoin\Exceptions\InvalidPrivateKey; |
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use BitWasp\Bitcoin\Network\NetworkInterface; |
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use BitWasp\Bitcoin\Serializer\Key\PrivateKey\WifPrivateKeySerializer; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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class PrivateKey extends Key implements PrivateKeyInterface |
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{ |
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/** |
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* @var int|string |
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*/ |
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private $secretMultiplier; |
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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 PublicKey |
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*/ |
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private $publicKey; |
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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 $int |
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* @param bool $compressed |
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* @throws InvalidPrivateKey |
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*/ |
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public function __construct(EcAdapter $ecAdapter, $int, $compressed = false) |
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{ |
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if (false === $ecAdapter->validatePrivateKey(Buffer::int($int, 32, $ecAdapter->getMath()))) { |
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throw new InvalidPrivateKey('Invalid private key - must be less than curve order.'); |
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} |
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if (false === is_bool($compressed)) { |
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throw new \InvalidArgumentException('PrivateKey: Compressed argument must be a boolean'); |
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} |
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$this->ecAdapter = $ecAdapter; |
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$this->secretMultiplier = $int; |
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$this->compressed = $compressed; |
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} |
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/** |
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* @return int|string |
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*/ |
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public function getSecretMultiplier() |
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{ |
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return $this->secretMultiplier; |
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} |
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/** |
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* @param BufferInterface $msg32 |
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* @param RbgInterface|null $rbg |
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* @return \BitWasp\Bitcoin\Crypto\EcAdapter\Signature\SignatureInterface |
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*/ |
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public function sign(BufferInterface $msg32, RbgInterface $rbg = null) |
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{ |
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return $this->ecAdapter->sign($msg32, $this, $rbg); |
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} |
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/** |
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* @param int|string $tweak |
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* @return PrivateKeyInterface |
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*/ |
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public function tweakAdd($tweak) |
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{ |
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$adapter = $this->ecAdapter; |
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return $adapter->getPrivateKey( |
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gmp_strval($adapter |
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->getMath() |
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->getModularArithmetic( |
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$adapter |
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->getGenerator() |
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->getOrder() |
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) |
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->add( |
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gmp_init($tweak, 10), |
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gmp_init($this->getSecretMultiplier(), 10) |
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), 10), |
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$this->compressed |
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); |
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} |
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/** |
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* @param int|string $tweak |
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* @return PrivateKeyInterface |
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*/ |
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public function tweakMul($tweak) |
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{ |
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$adapter = $this->ecAdapter; |
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return $adapter->getPrivateKey( |
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gmp_strval($adapter |
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->getMath() |
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->getModularArithmetic( |
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$adapter |
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->getGenerator() |
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->getOrder() |
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) |
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->mul( |
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gmp_init($tweak, 10), |
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gmp_init($this->getSecretMultiplier(), 10) |
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), 10), |
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$this->compressed |
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); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function isCompressed() |
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{ |
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return $this->compressed; |
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} |
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/** |
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* Return the public key |
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* |
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* @return PublicKey |
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*/ |
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public function getPublicKey() |
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{ |
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if (null === $this->publicKey) { |
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$adapter = $this->ecAdapter; |
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$this->publicKey = $adapter->getPublicKey( |
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$adapter |
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->getGenerator() |
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->mul(gmp_init($this->secretMultiplier, 10)), |
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$this->compressed |
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); |
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} |
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return $this->publicKey; |
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} |
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/** |
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* @param NetworkInterface $network |
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* @return string |
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*/ |
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public function toWif(NetworkInterface $network = null) |
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{ |
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$network = $network ?: Bitcoin::getNetwork(); |
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$serializer = new WifPrivateKeySerializer( |
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$this->ecAdapter->getMath(), |
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new PrivateKeySerializer($this->ecAdapter) |
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); |
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return $serializer->serialize($network, $this); |
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} |
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/** |
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* @return \BitWasp\Buffertools\BufferInterface |
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*/ |
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public function getBuffer() |
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{ |
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return (new PrivateKeySerializer($this->ecAdapter))->serialize($this); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
