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<?php |
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declare(strict_types=1); |
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namespace BitWasp\Bitcoin\Crypto\Random; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Adapter\EcAdapterInterface; |
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use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PrivateKeyInterface; |
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use BitWasp\Buffertools\Buffer; |
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use BitWasp\Buffertools\BufferInterface; |
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use Mdanter\Ecc\Crypto\Key\PrivateKey as MdPrivateKey; |
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use Mdanter\Ecc\Random\RandomGeneratorFactory; |
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use Mdanter\Ecc\Random\RandomNumberGeneratorInterface; |
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class Rfc6979 implements RbgInterface |
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{ |
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/** |
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* @var EcAdapterInterface |
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*/ |
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private $ecAdapter; |
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/** |
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* @var RandomNumberGeneratorInterface |
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*/ |
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private $hmac; |
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/** |
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* @param EcAdapterInterface $ecAdapter |
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* @param PrivateKeyInterface $privateKey |
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* @param BufferInterface $messageHash |
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* @param string $algo |
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*/ |
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public function __construct( |
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EcAdapterInterface $ecAdapter, |
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PrivateKeyInterface $privateKey, |
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BufferInterface $messageHash, |
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string $algo = 'sha256' |
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) { |
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$mdPk = new MdPrivateKey($ecAdapter->getMath(), $ecAdapter->getGenerator(), gmp_init($privateKey->getInt(), 10)); |
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$this->ecAdapter = $ecAdapter; |
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$this->hmac = RandomGeneratorFactory::getHmacRandomGenerator($mdPk, gmp_init($messageHash->getInt(), 10), $algo); |
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} |
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/** |
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* @param int $bytes |
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* @return BufferInterface |
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*/ |
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public function bytes(int $bytes): BufferInterface |
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{ |
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$integer = $this->hmac->generate($this->ecAdapter->getOrder()); |
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return Buffer::int(gmp_strval($integer, 10), $bytes); |
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} |
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} |
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Bit-Wasp /
bitcoin-php
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