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<?php |
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|
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declare(strict_types=1); |
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|
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2021 Spomky-Labs |
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* |
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* This software may be modified and distributed under the terms |
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* of the MIT license. See the LICENSE file for details. |
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*/ |
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|
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namespace Cose\Algorithm\Signature\ECDSA; |
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|
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use Assert\Assertion; |
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use Cose\Algorithm\Signature\Signature; |
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use Cose\Key\Ec2Key; |
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use Cose\Key\Key; |
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|
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abstract class ECDSA implements Signature |
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{ |
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public function sign(string $data, Key $key): string |
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{ |
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$key = $this->handleKey($key); |
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openssl_sign($data, $signature, $key->asPEM(), $this->getHashAlgorithm()); |
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|
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return ECSignature::fromAsn1($signature, $this->getSignaturePartLength()); |
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} |
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|
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public function verify(string $data, Key $key, string $signature): bool |
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{ |
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$key = $this->handleKey($key); |
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$publicKey = $key->toPublic(); |
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$signature = ECSignature::toAsn1($signature, $this->getSignaturePartLength()); |
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|
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return 1 === openssl_verify($data, $signature, $publicKey->asPEM(), $this->getHashAlgorithm()); |
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} |
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|
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abstract protected function getCurve(): int; |
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|
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abstract protected function getHashAlgorithm(): int; |
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|
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abstract protected function getSignaturePartLength(): int; |
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|
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private function handleKey(Key $key): Ec2Key |
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{ |
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$key = new Ec2Key($key->getData()); |
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Assertion::eq($key->curve(), $this->getCurve(), 'This key cannot be used with this algorithm'); |
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|
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return $key; |
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} |
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} |
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