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Perl Requires Chilkat v11.0.0+

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 Perl Downloads

Perl
use chilkat();

$success = 0;

#  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 = chilkat::CkEcc->new();
$prng = chilkat::CkPrng->new();
$privKey = chilkat::CkPrivateKey->new();

$success = $ecc->GenKey("secp256r1",$prng,$privKey);
if ($success == 0) {
    print "Failed to generate a new ECDSA private key." . "\r\n";
    exit;
}

$csr = chilkat::CkCsr->new();

#  Add common CSR fields:
$csr->put_CommonName("mysubdomain.mydomain.com");
$csr->put_Country("GB");
$csr->put_State("Yorks");
$csr->put_Locality("York");
$csr->put_Company("Internet Widgits Pty Ltd");
$csr->put_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 = chilkat::CkXml->new();
$xml->put_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",1,"tag","4");
$xml->UpdateAttrAt("sequence|sequence[1]|asnOctets|sequence|contextSpecific",1,"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
$csrPem = $csr->genCsrPem($privKey);
if ($csr->get_LastMethodSuccess() == 0) {
    print $csr->lastErrorText() . "\r\n";
    exit;
}

print $csrPem . "\r\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-----