phpseclib/tests/Unit/File/X509/X509ExtensionTest.php

<?php
/**
 * @author    Jim Wigginton <terrafrost@php.net>
 * @copyright 2014 Jim Wigginton
 * @license   http://www.opensource.org/licenses/mit-license.html  MIT License
 */

use phpseclib3\Crypt\RSA;
use phpseclib3\File\ASN1;
use phpseclib3\File\X509;

class Unit_File_X509_X509ExtensionTest extends PhpseclibTestCase
{
    public function testCustomExtension()
    {
        $customExtensionData = [
            'toggle' => true,
            'num' => 3,
            'name' => 'Johnny',
            'list' => ['foo', 'bar'],
        ];
        $customExtensionName = 'cust';
        $customExtensionNumber = '2.16.840.1.101.3.4.2.99';

        ASN1::loadOIDs([
            $customExtensionName => $customExtensionNumber,
        ]);

        X509::registerExtension($customExtensionName, [
            'type' => ASN1::TYPE_SEQUENCE,
            'children' => [
                'toggle' => ['type' => ASN1::TYPE_BOOLEAN],
                'num' => ['type' => ASN1::TYPE_INTEGER],
                'name' => ['type' => ASN1::TYPE_OCTET_STRING],
                'list' => [
                    'type' => ASN1::TYPE_SEQUENCE,
                    'min' => 0,
                    'max' => -1,
                    'children' => ['type' => ASN1::TYPE_OCTET_STRING],
                ],
            ],
        ]);

        $privateKey = RSA::createKey();

        $publicKey = $privateKey->getPublicKey();

        $subject = new X509();
        $subject->setDNProp('id-at-organizationName', 'phpseclib CA cert');
        $subject->setPublicKey($publicKey);

        $issuer = new X509();
        $issuer->setPrivateKey($privateKey);
        $issuer->setDN($subject->getDN());

        $x509 = new X509();
        $x509->setExtensionValue($customExtensionName, $customExtensionData);
        $x509->makeCA();

        $result = $x509->sign($issuer, $subject);

        $certificate = $x509->saveX509($result);

        $x509 = new X509();

        $decodedData = $x509->loadX509($certificate);
        $customExtensionDecodedData = null;

        foreach ($decodedData['tbsCertificate']['extensions'] as $extension) {
            if ($extension['extnId'] === $customExtensionName) {
                $customExtensionDecodedData = $extension['extnValue'];

                break;
            }
        }

        $this->assertTrue($customExtensionDecodedData['toggle']);
        $this->assertInstanceOf('phpseclib3\Math\BigInteger', $customExtensionDecodedData['num']);
        $this->assertSame('3', (string) $customExtensionDecodedData['num']);
        $this->assertSame('Johnny', $customExtensionDecodedData['name']);
        $this->assertSame(['foo', 'bar'], $customExtensionDecodedData['list']);
    }
}