(PHP ActiveX) 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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

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

// First generate an RSA private key.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Rsa')
$rsa = new COM("Chilkat.Rsa");

// Generate a random 2048-bit RSA key.
$success = $rsa->GenerateKey(2048);
if ($success != 1) {
    print $rsa->LastErrorText . "\n";
    exit;
}

// Get the private key
// privKey is a Chilkat.PrivateKey
$privKey = $rsa->ExportPrivateKeyObj();

// Create the CSR object and set properties.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Csr')
$csr = new COM("Chilkat.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);
if ($csr->LastMethodSuccess != 1) {
    print $csr->LastErrorText . "\n";

    exit;
}

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

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.FileAccess')
$fac = new COM("Chilkat.FileAccess");
$fac->WriteEntireTextFile('qa_output/csr1.pem',$pemStr,'utf-8',0);

// Show the CSR.
print $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-----

?>