PHP Requires Chilkat v11.0.0+
Chilkat2 PHP
Duplicate CSR Created by OpenSSL with Config.cnf
See more CSR Examples
Demonstrates how to duplicate a CSR created by the following commands:# Generate Private Key openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem #Generate CSR openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr
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<?php
use Chilkat2\Csr;
use Chilkat2\Ecc;
use Chilkat2\PrivateKey;
use Chilkat2\Prng;
use Chilkat2\StringBuilder;
use Chilkat2\Xml;
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
// This example duplicates the CSR created by OpenSSL with the following config file:
// oid_section = OIDs
// [ OIDs ]
// certificateTemplateName= 1.3.6.1.4.1.311.20.2
//
// [ req ]
// default_bits = 2048
// emailAddress = it@example.sa
// req_extensions = v3_req
// x509_extensions = v3_ca
// prompt = no
// default_md = sha256
// req_extensions = req_ext
// distinguished_name = dn
//
// [ v3_req ]
// basicConstraints = CA:FALSE
// keyUsage = digitalSignature, nonRepudiation, keyEncipherment
//
// [req_ext]
// certificateTemplateName = ASN1:PRINTABLESTRING:ZATCA-Code-Signing
// subjectAltName = dirName:alt_names
//
// [ dn ]
// CN =EXAMPLE-CORP # Common Name
// C=SA # Country Code e.g SA
// OU=HEAD-OFFICE # Organization Unit Name
// O=ASC # Organization Name
//
// [alt_names]
// SN=1-ASC|2-V01|3-1234567890 # EGS Serial Number 1-ABC|2-PQR|3-XYZ
// UID=312345678900003 # Organization Identifier (VAT Number)
// title=1100 # Invoice Type
// registeredAddress=Dammam # Address
// businessCategory=IT # Business Category
// The OpenSSL commands we are duplicating:
// openssl ecparam -name secp256k1 -genkey -noout -out PrivateKey.pem
// openssl req -new -sha256 -key PrivateKey.pem -extensions v3_req -config Config.cnf -out CSR.csr
// The 1st step is to actually use OpenSSL to generate a sample CSR.csr that we wish to duplicate.
// With the sample CSR.csr, we get the ExtensionRequest as XML.
// For example:
$sbCsr = new StringBuilder();
try {
$sbCsr->LoadFile('qa_data/csr/openssl_cnf/CSR.csr', 'utf-8');
} catch (\Chilkat2\Exception $e) {
echo "Failed to load CSR.csr\n";
exit;
}
$csr0 = new Csr();
try {
$csr0->LoadCsrPem($sbCsr->GetAsString());
$xml0 = new Xml();
$csr0->GetExtensionRequest($xml0);
} catch (\Chilkat2\Exception $e) {
echo $e->getMessage(), "\n";
exit;
}
// Let's examine the extension request..
echo $xml0->GetXml(), "\n";
/*
* <?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>1-ASC|2-V01|3-1234567890</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>0.9.2342.19200300.100.1.1</oid>
* <utf8>312345678900003</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>2.5.4.12</oid>
* <utf8>1100</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>2.5.4.26</oid>
* <utf8>Dammam</utf8>
* </sequence>
* </set>
* <set>
* <sequence>
* <oid>2.5.4.15</oid>
* <utf8>IT</utf8>
* </sequence>
* </set>
* </sequence>
* </contextSpecific>
* </sequence>
* </asnOctets>
* </sequence>
* </sequence>
* </set>
*/
// If you wish to generate the above XML without going through the above steps, copy the XML into
// the online tool at https://tools.chilkat.io/xmlCreate
// Here is the generated code for the above XML:
$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', '1-ASC|2-V01|3-1234567890');
$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', '312345678900003');
$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', '1100');
$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', 'Dammam');
$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', 'IT');
// We'll need a new secp256k1 private key, so let's generate it.
$ecdsa = new Ecc();
$prng = new Prng();
$privKey = new PrivateKey();
try {
$ecdsa->GenKey('secp256k1', $prng, $privKey);
} catch (\Chilkat2\Exception $e) {
echo $e->getMessage(), "\n";
exit;
}
echo "Generated secp256k1 private key.\n";
// Use a new CSR object to generate a CSR with the private key and extension request.
$csr = new Csr();
// Add the [dn] fields
// [ dn ]
// CN =EXAMPLE-CORP # Common Name
// C=SA # Country Code e.g SA
// OU=HEAD-OFFICE # Organization Unit Name
// O=ASC # Organization Name
$csr->CommonName = 'EXAMPLE-CORP';
$csr->Country = 'SA';
$csr->CompanyDivision = 'HEAD-OFFICE';
$csr->Company = 'ASC';
// 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 output:
// -----BEGIN CERTIFICATE REQUEST-----
// MIIBuDCCAV8CAQAwSDEVMBMGA1UEAwwMRVhBTVBMRS1DT1JQMQswCQYDVQQGEwJT
// QTEUMBIGA1UECwwLSEVBRC1PRkZJQ0UxDDAKBgNVBAoMA0FTQzBWMBAGByqGSM49
// AgEGBSuBBAAKA0IABFI5rusr76HiJcMMr1r4L0B0BOAs6azLkt/RwHoT6A0xFRRt
// tulWT40tNhx3qJ4I5ePNgMceOEtuK1kMGVTovI6ggbcwgbQGCSqGSIb3DQEJDjGB
// pjCBozAhBgkrBgEEAYI3FAIEFBMSWkFUQ0EtQ29kZS1TaWduaW5nMH4GA1UdEQR3
// MHWkczBxMSEwHwYDVQQEDBgxLUFTQ3wyLVYwMXwzLTEyMzQ1Njc4OTAxHzAdBgoJ
// kiaJk/IsZAEBDA8zMTIzNDU2Nzg5MDAwMDMxDTALBgNVBAwMBDExMDAxDzANBgNV
// BBoMBkRhbW1hbTELMAkGA1UEDwwCSVQwCgYIKoZIzj0EAwIDRwAwRAIgJnbgpSGb
// diB+0M1VTqc1GU9sFsfnOvVN/8WhWRRxQIwCIF5eH9vgMgXyoU284X8Bx3dqOJ4q
// xashGWci87POxSvT
// -----END CERTIFICATE REQUEST-----