Pascal (Lazarus/Delphi)
Pascal (Lazarus/Delphi)
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 Pascal (Lazarus/Delphi) Downloads
program ChilkatDemo;
// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.
{$IFDEF FPC}
{$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}
uses
{$IFDEF UNIX}
cthreads,
{$ENDIF}
SysUtils,
CkDllLoader,
Chilkat.Xml,
Chilkat.PrivateKey,
Chilkat.Prng,
Chilkat.Ecc,
Chilkat.Csr;
// ---------------------------------------------------------------------------
procedure RunDemo;
var
success: Boolean;
ecc: TEcc;
prng: TPrng;
privKey: TPrivateKey;
csr: TCsr;
xml: TXml;
csrPem: string;
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 := TEcc.Create;
prng := TPrng.Create;
privKey := TPrivateKey.Create;
success := ecc.GenKey('secp256r1',prng,privKey);
if (success = False) then
begin
WriteLn('Failed to generate a new ECDSA private key.');
Exit;
end;
csr := TCsr.Create;
// 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 := TXml.Create;
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
csrPem := csr.GenCsrPem(privKey);
if (csr.LastMethodSuccess = False) then
begin
WriteLn(csr.LastErrorText);
Exit;
end;
WriteLn(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-----
ecc.Free;
prng.Free;
privKey.Free;
csr.Free;
xml.Free;
end;
// ---------------------------------------------------------------------------
begin
try
RunDemo;
except
on E: Exception do
WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
end;
WriteLn;
{$IFDEF MSWINDOWS}
WriteLn('Press Enter to exit...');
ReadLn;
{$ENDIF}
end.