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<?php |
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declare(strict_types=1); |
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namespace Mdanter\Ecc\Serializer\PublicKey\Der; |
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use FG\ASN1\Universal\Sequence; |
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use FG\ASN1\Universal\ObjectIdentifier; |
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use FG\ASN1\Universal\BitString; |
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use Mdanter\Ecc\Primitives\PointInterface; |
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use Mdanter\Ecc\Crypto\Key\PublicKeyInterface; |
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use Mdanter\Ecc\Curves\NamedCurveFp; |
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use Mdanter\Ecc\Serializer\Util\CurveOidMapper; |
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use Mdanter\Ecc\Serializer\PublicKey\DerPublicKeySerializer; |
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use Mdanter\Ecc\Serializer\Point\PointSerializerInterface; |
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use Mdanter\Ecc\Serializer\Point\UncompressedPointSerializer; |
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class Formatter |
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{ |
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/** |
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* @var UncompressedPointSerializer |
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*/ |
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private $pointSerializer; |
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/** |
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* Formatter constructor. |
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* @param PointSerializerInterface|null $pointSerializer |
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*/ |
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public function __construct(PointSerializerInterface $pointSerializer = null) |
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{ |
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$this->pointSerializer = $pointSerializer ?: new UncompressedPointSerializer(); |
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} |
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/** |
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* @param PublicKeyInterface $key |
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* @return string |
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*/ |
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public function format(PublicKeyInterface $key): string |
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{ |
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if (! ($key->getCurve() instanceof NamedCurveFp)) { |
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throw new \RuntimeException('Not implemented for unnamed curves'); |
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} |
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$sequence = new Sequence( |
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new Sequence( |
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new ObjectIdentifier(DerPublicKeySerializer::X509_ECDSA_OID), |
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CurveOidMapper::getCurveOid($key->getCurve()) |
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), |
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new BitString($this->encodePoint($key->getPoint())) |
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); |
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return $sequence->getBinary(); |
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} |
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/** |
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* @param PointInterface $point |
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* @return string |
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*/ |
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public function encodePoint(PointInterface $point): string |
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{ |
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return $this->pointSerializer->serialize($point); |
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} |
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} |
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shanecurran /
phpecc
