(Delphi DLL) 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 for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, FileAccess, PrivateKey, Rsa, Csr;

...

procedure TForm1.Button1Click(Sender: TObject);
var
rsa: HCkRsa;
success: Boolean;
privKey: HCkPrivateKey;
csr: HCkCsr;
pemStr: PWideChar;
fac: HCkFileAccess;

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

// First generate an RSA private key.
rsa := CkRsa_Create();

// Generate a random 2048-bit RSA key.
success := CkRsa_GenerateKey(rsa,2048);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRsa__lastErrorText(rsa));
    Exit;
  end;

// Get the private key
privKey := CkRsa_ExportPrivateKeyObj(rsa);

// Create the CSR object and set properties.
csr := CkCsr_Create();

CkCsr_putCommonName(csr,'Admin forInformation-MainShop');

// Country Name (2 letter code)
CkCsr_putCountry(csr,'SA');

// Organization Name (eg, company)
CkCsr_putCompany(csr,'9999910000');

// Organizational Unit Name (eg, secion/division)
CkCsr_putCompanyDivision(csr,'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 
CkCsr_SetSubjectField(csr,'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.
CkCsr_SetSubjectField(csr,'2.5.4.45','1100','UTF8String');

// csr.invoice.type=1100
// Don't know what this OID would be...
CkCsr_SetSubjectField(csr,'2.5.4.99','1100','UTF8String');

// csr.location.address=King Fahed Road
// 2.5.4.9 - id-at-streetAddress 
CkCsr_SetSubjectField(csr,'2.5.4.9','King Fahed Road','UTF8String');

// csr.industry.business.category=MainOffice
// 2.5.4.15 - id-at-businessCategory 
CkCsr_SetSubjectField(csr,'2.5.4.15','MainOffice','UTF8String');

// Create the CSR using the private key.
pemStr := CkCsr__genCsrPem(csr,privKey);
if (CkCsr_getLastMethodSuccess(csr) <> True) then
  begin
    Memo1.Lines.Add(CkCsr__lastErrorText(csr));
    CkPrivateKey_Dispose(privKey);
    Exit;
  end;

// Save the private key and CSR to a files.
CkPrivateKey_SavePkcs8EncryptedPemFile(privKey,'password','qa_output/privKey1.pem');
CkPrivateKey_Dispose(privKey);

fac := CkFileAccess_Create();
CkFileAccess_WriteEntireTextFile(fac,'qa_output/csr1.pem',pemStr,'utf-8',False);

// Show the CSR.
Memo1.Lines.Add(pemStr);

// 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-----

CkRsa_Dispose(rsa);
CkCsr_Dispose(csr);
CkFileAccess_Dispose(fac);

end;