PHP Requires Chilkat v11.0.0+

Generate CSR with Uncommon Fields

See more CSR Examples

Demonstrates how to generate a new RSA key and a Certificate Signing Request (CSR) for this:

csr.common.name=Admin forInformation-MainShop
csr.serial.number=1-XYZ|2-2.0|3-999695
csr.organization.identifier=990099994100099
csr.organization.unit.name=9999910000
csr.organization.name=9999910000
csr.country.name=SA
csr.invoice.type=1100
csr.location.address=King Fahed Road
csr.industry.business.category=MainOffice

Chilkat2 PHP

<?php

use Chilkat2\Csr;
use Chilkat2\FileAccess;
use Chilkat2\PrivateKey;
use Chilkat2\Rsa;

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// First generate an RSA private key.
$rsa = new Rsa();

// Generate a random 2048-bit RSA key.
$privKey = new PrivateKey();
try {
    $rsa->GenKey(2048, $privKey);

    // Create the CSR object and set properties.
    $csr = new Csr();

    $csr->CommonName = 'Admin forInformation-MainShop';

    // Country Name (2 letter code)
    $csr->Country = 'SA';

    // Organization Name (eg, company)
    $csr->Company = '9999910000';

    // Organizational Unit Name (eg, secion/division)
    $csr->CompanyDivision = '9999910000';

    // See https://www.alvestrand.no/objectid/2.5.4.html for OIDs for the following fields:

    // csr.serial.number=1-XYZ|2-2.0|3-999695
    // 2.5.4.5 - id-at-serialNumber
    $csr->SetSubjectField('2.5.4.5', '1-XYZ|2-2.0|3-999695', 'UTF8String');

    // csr.organization.identifier=990099994100099
    // 2.5.4.45 - id-at-uniqueIdentifier   Don't know if this is correct.
    $csr->SetSubjectField('2.5.4.45', '1100', 'UTF8String');

    // csr.invoice.type=1100
    // Don't know what this OID would be...
    $csr->SetSubjectField('2.5.4.99', '1100', 'UTF8String');

    // csr.location.address=King Fahed Road
    // 2.5.4.9 - id-at-streetAddress
    $csr->SetSubjectField('2.5.4.9', 'King Fahed Road', 'UTF8String');

    // csr.industry.business.category=MainOffice
    // 2.5.4.15 - id-at-businessCategory
    $csr->SetSubjectField('2.5.4.15', 'MainOffice', 'UTF8String');

    // Create the CSR using the private key.
    $pemStr = $csr->GenCsrPem($privKey);
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Save the private key and CSR to a files.
$privKey->SavePkcs8EncryptedPemFile('password', 'qa_output/privKey1.pem');

$fac = new FileAccess();
$fac->WriteEntireTextFile('qa_output/csr1.pem', $pemStr, 'utf-8', false);

// Show the CSR.
echo $pemStr, "\n";

// Sample output:
// The CSR PEM can be checked here:
// https://www.networking4all.com/en/support/tools/csr+check/
// Copy-and-paste the PEM into the online CSR Decoding / CSR Verification form

//     -----BEGIN CERTIFICATE REQUEST-----
//     MIIC6jCCAdICAQAwgaQxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
// ...
// ...
//     hJnYCvjzFz4O9VtT+JtP9ldRHWV3KpZ8ne3AjD+F
//     -----END CERTIFICATE REQUEST-----