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<?php
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namespace Firebase\JWT;
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use InvalidArgumentException;
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use OpenSSLAsymmetricKey;
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use OpenSSLCertificate;
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use TypeError;
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class Key
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{
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    /** @var string|resource|OpenSSLAsymmetricKey|OpenSSLCertificate */
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    private $keyMaterial;
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    /** @var string */
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    private $algorithm;
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    /**
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     * @param string|resource|OpenSSLAsymmetricKey|OpenSSLCertificate $keyMaterial
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     * @param string $algorithm
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     */
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    public function __construct(
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        $keyMaterial,
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        string $algorithm
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    ) {
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        if (
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            !\is_string($keyMaterial)
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            && !$keyMaterial instanceof OpenSSLAsymmetricKey
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            && !$keyMaterial instanceof OpenSSLCertificate
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            && !\is_resource($keyMaterial)
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        ) {
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            throw new TypeError('Key material must be a string, resource, or OpenSSLAsymmetricKey');
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        }
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        if (empty($keyMaterial)) {
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            throw new InvalidArgumentException('Key material must not be empty');
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        }
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        if (empty($algorithm)) {
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            throw new InvalidArgumentException('Algorithm must not be empty');
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        }
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        // TODO: Remove in PHP 8.0 in favor of class constructor property promotion
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        $this->keyMaterial = $keyMaterial;
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        $this->algorithm = $algorithm;
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    }
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    /**
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     * Return the algorithm valid for this key
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     *
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     * @return string
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     */
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    public function getAlgorithm(): string
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    {
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        return $this->algorithm;
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    }
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    /**
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     * @return string|resource|OpenSSLAsymmetricKey|OpenSSLCertificate
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     */
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    public function getKeyMaterial()
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    {
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        return $this->keyMaterial;
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    }
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}