Delphi DLL
Delphi DLL
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 Delphi DLL Downloads
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Xml, PrivateKey, Prng, Ecc, Csr;
...
procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
ecc: HCkEcc;
prng: HCkPrng;
privKey: HCkPrivateKey;
csr: HCkCsr;
xml: HCkXml;
csrPem: PWideChar;
begin
success := False;
// 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 := CkEcc_Create();
prng := CkPrng_Create();
privKey := CkPrivateKey_Create();
success := CkEcc_GenKey(ecc,'secp256r1',prng,privKey);
if (success = False) then
begin
Memo1.Lines.Add('Failed to generate a new ECDSA private key.');
Exit;
end;
csr := CkCsr_Create();
// Add common CSR fields:
CkCsr_putCommonName(csr,'mysubdomain.mydomain.com');
CkCsr_putCountry(csr,'GB');
CkCsr_putState(csr,'Yorks');
CkCsr_putLocality(csr,'York');
CkCsr_putCompany(csr,'Internet Widgits Pty Ltd');
CkCsr_putEmailAddress(csr,'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 := CkXml_Create();
CkXml_putTag(xml,'set');
CkXml_UpdateChildContent(xml,'sequence|sequence|oid','1.3.6.1.4.1.311.20.2');
CkXml_UpdateChildContent(xml,'sequence|sequence|asnOctets|printable','ZATCA-Code-Signing');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|oid','2.5.29.17');
CkXml_UpdateAttrAt(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific',True,'tag','4');
CkXml_UpdateAttrAt(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific',True,'constructed','1');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|oid','2.5.4.4');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set|sequence|utf8','334623324234325');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|oid','0.9.2342.19200300.100.1.1');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[1]|sequence|utf8','310122393500003');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|oid','2.5.4.12');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[2]|sequence|utf8','0000');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|oid','2.5.4.26');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[3]|sequence|utf8','Sample E');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|oid','2.5.4.15');
CkXml_UpdateChildContent(xml,'sequence|sequence[1]|asnOctets|sequence|contextSpecific|sequence|set[4]|sequence|utf8','Sample Business');
// Add the extension request to the CSR
CkCsr_SetExtensionRequest(csr,xml);
// Generate the CSR with the extension request
csrPem := CkCsr__genCsrPem(csr,privKey);
if (CkCsr_getLastMethodSuccess(csr) = False) then
begin
Memo1.Lines.Add(CkCsr__lastErrorText(csr));
Exit;
end;
Memo1.Lines.Add(csrPem);
// 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-----
CkEcc_Dispose(ecc);
CkPrng_Dispose(prng);
CkPrivateKey_Dispose(privKey);
CkCsr_Dispose(csr);
CkXml_Dispose(xml);
end;