Dart Requires Chilkat v11.0.0+

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

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // First generate an RSA private key.
  final rsa = CkRsa();

  // Generate a random 2048-bit RSA key.
  final privKey = CkPrivateKey();
  try {
    rsa.genKey(2048, privKey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Create the CSR object and set properties.
  final csr = CkCsr();

  csr.commonName = 'Admin forInformation-MainShop';

  // Country Name (2 letter code)
  csr.country = 'SA';

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

  // Organizational Unit Name (eg, secion/division)
  csr.companyDivision = '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 
  csr.setSubjectField('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.
  csr.setSubjectField('2.5.4.45', '1100', 'UTF8String');

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

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

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

  // Create the CSR using the private key.
  final String pemStr;
  try {
    pemStr = csr.genCsrPem(privKey);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Save the private key and CSR to a files.
  privKey.savePkcs8EncryptedPemFile('password', 'qa_output/privKey1.pem');

  final fac = CkFileAccess();
  fac.writeEntireTextFile('qa_output/csr1.pem', pemStr, 'utf-8', false);

  // Show the CSR.
  print(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-----
}