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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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use Mdanter\Ecc\Crypto\EcDH\EcDH; |
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class PrivateKey extends Key implements PrivateKeyInterface, \Mdanter\Ecc\Crypto\Key\PrivateKeyInterface |
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{ |
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/** |
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* @var \GMP |
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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 \GMP $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, \GMP $int, $compressed = false) |
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{ |
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if (false === $ecAdapter->validatePrivateKey(Buffer::int(gmp_strval($int, 10), 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 \Mdanter\Ecc\Primitives\GeneratorPoint |
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*/ |
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public function getPoint() |
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{ |
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return $this->ecAdapter->getGenerator(); |
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} |
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/** |
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* @return \GMP |
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*/ |
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public function getSecret() |
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{ |
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return $this->secretMultiplier; |
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} |
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/** |
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* @param \Mdanter\Ecc\Crypto\Key\PublicKeyInterface $recipient |
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* @return EcDH |
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*/ |
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public function createExchange(\Mdanter\Ecc\Crypto\Key\PublicKeyInterface $recipient) |
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{ |
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$ecdh = new EcDH($this->ecAdapter->getMath()); |
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$ecdh->setSenderKey($this); |
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$ecdh->setRecipientKey($recipient); |
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return $ecdh; |
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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 \GMP $tweak |
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* @return PrivateKeyInterface |
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*/ |
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public function tweakAdd(\GMP $tweak) |
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{ |
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$adapter = $this->ecAdapter; |
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return $adapter->getPrivateKey( |
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$adapter |
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->getMath() |
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->getModularArithmetic( |
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$adapter |
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->getGenerator() |
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->getOrder() |
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) |
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->add( |
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$tweak, |
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$this->getSecret() |
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), |
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$this->compressed |
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); |
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} |
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/** |
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* @param \GMP $tweak |
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* @return PrivateKeyInterface |
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*/ |
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public function tweakMul(\GMP $tweak) |
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{ |
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$adapter = $this->ecAdapter; |
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return $adapter->getPrivateKey( |
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$adapter |
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->getMath() |
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->getModularArithmetic( |
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$adapter |
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->getGenerator() |
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->getOrder() |
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) |
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->mul( |
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$tweak, |
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$this->getSecret() |
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), |
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$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($this->secretMultiplier), |
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$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
