Sop\X509\Certificate\Extension\SubjectKeyIdentifierExtension

Complexity

Total Complexity

4

Size/Duplication

Total Lines	46
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	_valueASN1()	0	3	1
A	__construct()	0	4	1
A	_fromDER()	0	4	1
A	keyIdentifier()	0	3	1

<?php

declare(strict_types = 1);

namespace Sop\X509\Certificate\Extension;

use Sop\ASN1\Element;
use Sop\ASN1\Type\Primitive\OctetString;
use Sop\ASN1\Type\UnspecifiedType;

/**
 * Implements 'Subject Key Identifier' certificate extension.
 *
 * @see https://tools.ietf.org/html/rfc5280#section-4.2.1.2
 */
class SubjectKeyIdentifierExtension extends Extension
{
    /**
     * Key identifier.
     *
     * @var string
     */
    protected $_keyIdentifier;

    /**
     * Constructor.
     *
     * @param bool   $critical
     * @param string $keyIdentifier
     */
    public function __construct(bool $critical, string $keyIdentifier)
    {
        parent::__construct(self::OID_SUBJECT_KEY_IDENTIFIER, $critical);
        $this->_keyIdentifier = $keyIdentifier;
    }

    /**
     * Get key identifier.
     *
     * @return string
     */
    public function keyIdentifier(): string
    {
        return $this->_keyIdentifier;
    }

    /**
     * {@inheritdoc}
     */
    protected static function _fromDER(string $data, bool $critical): Extension
    {
        return new self($critical,
            UnspecifiedType::fromDER($data)->asOctetString()->string());
    }

    /**
     * {@inheritdoc}
     */
    protected function _valueASN1(): Element
    {
        return new OctetString($this->_keyIdentifier);
    }
}