<?php

declare(strict_types=1);

namespace Cose\Algorithm\Signature\ECDSA;

use Cose\Algorithm\Signature\Signature;
use Cose\Key\Ec2Key;
use Cose\Key\Key;
use InvalidArgumentException;
use function openssl_sign;
use function openssl_verify;

/**
 * @see \Cose\Tests\Algorithm\Signature\ECDSA\ECDSATest
 */
abstract class ECDSA implements Signature
{
    public function sign(string $data, Key $key): string
    {
        $key = $this->handleKey($key);
        openssl_sign($data, $signature, $key->asPEM(), $this->getHashAlgorithm());

        return ECSignature::fromAsn1($signature, $this->getSignaturePartLength());
    }

    public function verify(string $data, Key $key, string $signature): bool
    {
        $key = $this->handleKey($key);
        $publicKey = $key->toPublic();
        $signature = ECSignature::toAsn1($signature, $this->getSignaturePartLength());
        return openssl_verify($data, $signature, $publicKey->asPEM(), $this->getHashAlgorithm()) === 1;
    }

    abstract protected function getCurve(): int;

    abstract protected function getHashAlgorithm(): int;

    abstract protected function getSignaturePartLength(): int;

    private function handleKey(Key $key): Ec2Key
    {
        $key = Ec2Key::create($key->getData());
        if ($key->curve() !== $this->getCurve()) {
            throw new InvalidArgumentException('This key cannot be used with this algorithm');
        }

        return $key;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----OTU5ODgxMDU0NjgwNzc2MiA3MzQxMzY5NTc5Njc3ODY2IDE3MjkzNjk5MDgwMzIzNzg=