PHP Requires Chilkat v11.0.0+
Chilkat2 PHP
Generate a CSR containing an Extension Request
See more CSR Examples
Demonstrates how to generate a CSR containing a 1.2.840.113549.1.9.14 extensionRequest.Chilkat PHP Downloads
<?php
use Chilkat2\Csr;
use Chilkat2\Ecc;
use Chilkat2\PrivateKey;
use Chilkat2\Prng;
use Chilkat2\Xml;
// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example will generate a secp256r1 ECDSA key for the CSR.
$ecc = new Ecc();
$prng = new Prng();
$privKey = new PrivateKey();
try {
$ecc->GenKey('secp256r1', $prng, $privKey);
} catch (\Chilkat2\Exception $e) {
echo "Failed to generate a new ECDSA private key.\n";
exit;
}
$csr = new Csr();
// Add common CSR fields:
$csr->CommonName = 'mysubdomain.mydomain.com';
$csr->Country = 'GB';
$csr->State = 'Yorks';
$csr->Locality = 'York';
$csr->Company = 'Internet Widgits Pty Ltd';
$csr->EmailAddress = 'support@mydomain.com';
// Add the following 1.2.840.113549.1.9.14 extensionRequest
// Note: The easiest way to know the content and format of the XML to be added is to examine
// a pre-existing CSR with the same desired extensionRequest. You can use Chilkat to
// get the extensionRequest from an existing CSR.
// Here is a sample extension request:
/*
* <?xml version="1.0" encoding="utf-8"?>
* <set>
* <sequence>
* <sequence>
* <oid>1.3.6.1.4.1.311.20.2</oid>
* <asnOctets>
* <printable>ZATCA-Code-Signing</printable>
* </asnOctets>
* </sequence>
* <sequence>
* <oid>2.5.29.17</oid>
* <asnOctets>
* <sequence>
* <contextSpecific tag="4" constructed="1">
* <sequence>
* <set>
* <sequence>
* <oid>2.5.4.4</oid>
* <utf8>334623324234325</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>0.9.2342.19200300.100.1.1</oid>
* <utf8>310122393500003</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>2.5.4.12</oid>
* <utf8>0000</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>2.5.4.26</oid>
* <utf8>Sample E</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>2.5.4.15</oid>
* <utf8>Sample Business</utf8>
* </sequence>
* </set>
* </sequence>
* </contextSpecific>
* </sequence>
* </asnOctets>
* </sequence>
* </sequence>
* </set>
*/
// Use this online tool to generate code from sample XML:
// Generate Code to Create XML
// Here's the code to generate the above extension request.
$xml = new Xml();
$xml->Tag = 'set';
$xml->UpdateChildContent('sequence|sequence|oid', '1.3.6.1.4.1.311.20.2');
$xml->UpdateChildContent('sequence|sequence|asnOctets|printable', 'ZATCA-Code-Signing');
$xml->UpdateChildContent('sequence|sequence[1]|oid', '2.5.29.17');
$xml->UpdateAttrAt('sequence|sequence[1]|asnOctets|sequence|contextSpecific', true, 'tag', '4');
$xml->UpdateAttrAt('sequence|sequence[1]|asnOctets|sequence|contextSpecific', true, 'constructed', '1');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|oid', '2.5.4.4');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|utf8', '334623324234325');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|oid', '0.9.2342.19200300.100.1.1');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|utf8', '310122393500003');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|oid', '2.5.4.12');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|utf8', '0000');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|oid', '2.5.4.26');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|utf8', 'Sample E');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|oid', '2.5.4.15');
$xml->UpdateChildContent('sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|utf8', 'Sample Business');
// Add the extension request to the CSR
$csr->SetExtensionRequest($xml);
// Generate the CSR with the extension request
try {
$csrPem = $csr->GenCsrPem($privKey);
} catch (\Chilkat2\Exception $e) {
echo $e->getMessage(), "\n";
exit;
}
echo $csrPem, "\n";
// Sample PEM output:
// -----BEGIN CERTIFICATE REQUEST-----
// MIICEjCCAbkCAQAwgZcxITAfBgNVBAMMGG15c3ViZG9tYWluLm15ZG9tYWluLmNv
// bTELMAkGA1UEBhMCR0IxDjAMBgNVBAgMBVlvcmtzMQ0wCwYDVQQHDARZb3JrMSEw
// HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQxIzAhBgkqhkiG9w0BCQEW
// FHN1cHBvcnRAbXlkb21haW4uY29tMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE
// g8EVNSV0ttlM9kG2E+J3ZB9WEDYVf2QA/8idrPRUafia1CHjd1kslwZA8eP2bAcf
// 2O493QAENqtW6DTHJbRz8KCBvjCBuwYJKoZIhvcNAQkOMYGtMIGqMCEGCSsGAQQB
// gjcUAgQUExJaQVRDQS1Db2RlLVNpZ25pbmcwgYQGA1UdEQR9MHukeTB3MRgwFgYD
// VQQEDA8zMzQ2MjMzMjQyMzQzMjUxHzAdBgoJkiaJk/IsZAEBDA8zMTAxMjIzOTM1
// MDAwMDMxDTALBgNVBAwMBDAwMDAxETAPBgNVBBoMCFNhbXBsZSBFMRgwFgYDVQQP
// DA9TYW1wbGUgQnVzaW5lc3MwCgYIKoZIzj0EAwIDRwAwRAIgF7D30eSBklfo+oel
// 1B0z64eJDB9MB3rCoiFZlj+mz0YCIHYI87eyqdtw2LOcAoBRhyxlBT6i28+Z/8t9
// bYsMIYvp
// -----END CERTIFICATE REQUEST-----