File Content: ECDSA.php <?php declare(strict_types=1); /* * The MIT License (MIT) * * Copyright (c) 2014-2021 Spomky-Labs * * This software may be modified and distributed under the terms * of the MIT license. See the LICENSE file for details. */ namespace Cose\Algorithm\Signature\ECDSA; use Assert\Assertion; use Cose\Algorithm\Signature\Signature; use Cose\Key\Ec2Key; use Cose\Key\Key; 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, $this->getSignaturePartLength()); return 1 === openssl_verify($data, $signature, $publicKey->asPEM(), $this->getHashAlgorithm()); } abstract protected function getCurve(): int; abstract protected function getHashAlgorithm(): int; abstract protected function getSignaturePartLength(): int; private function handleKey(Key $key): Ec2Key { $key = new Ec2Key($key->getData()); Assertion::eq($key->curve(), $this->getCurve(), 'This key cannot be used with this algorithm'); return $key; } } Submit