54 lines
1.3 KiB
PHP
54 lines
1.3 KiB
PHP
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<?php
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/*
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* This file is part of the Acme PHP project.
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*
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* (c) Titouan Galopin <galopintitouan@gmail.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace AcmePhp\Ssl;
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use AcmePhp\Ssl\Exception\KeyFormatException;
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use Webmozart\Assert\Assert;
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/**
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* Represent a SSL Public key.
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*
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* @author Jérémy Derussé <jeremy@derusse.com>
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*/
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class PublicKey extends Key
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{
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/**
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* {@inheritdoc}
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*/
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public function getResource()
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{
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if (!$resource = openssl_pkey_get_public($this->keyPEM)) {
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throw new KeyFormatException(sprintf('Failed to convert key into resource: %s', openssl_error_string()));
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}
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return $resource;
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}
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public static function fromDER(string $keyDER): self
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{
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Assert::stringNotEmpty($keyDER, __METHOD__.'::$keyDER should be a non-empty string. Got %s');
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$der = base64_encode($keyDER);
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$lines = str_split($der, 65);
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array_unshift($lines, '-----BEGIN PUBLIC KEY-----');
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$lines[] = '-----END PUBLIC KEY-----';
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$lines[] = '';
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return new self(implode("\n", $lines));
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}
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public function getHPKP(): string
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{
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return base64_encode(hash('sha256', $this->getDER(), true));
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}
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}
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