Dart Requires Chilkat v11.0.0+

Get a .pfx/.p12 Safe Bag Attribute

See more PFX/P12 Examples

Demonstrates how to get the value of a private key or certificate safe bag attribute. Safe bag attributes are associated with a key or certificate. They are attributes stored in the .p12/.pfx alongside a key or certificate. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final pfx = CkPfx();

  try {
    pfx.loadPfxFile('qa_data/pfx/test_ecdsa_secret.pfx', 'secret');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final json = CkJsonObject();
  pfx.getLastJsonData(json);

  json.emitCompact = false;
  print(json.emit());

  // The last JSON data provides information about the what is contained in the PFX.  It was collected in the call to LoadPfxFile.
  // For example:

  // {
  //   "authenticatedSafe": {
  //     "contentInfo": [
  //       {
  //         "type": "Data",
  //         "safeBag": [
  //           {
  //             "type": "pkcs8ShroudedKeyBag",
  //             "attrs": {
  //               "localKeyId": "16777216",
  //               "keyContainerName": "{B99EB9E7-6AF7-42AF-A43A-D4B2225B7605}",
  //               "msStorageProvider": "Microsoft Software Key Storage Provider"
  //             }
  //           }
  //         ]
  //       },
  //       {
  //         "type": "EncryptedData",
  //         "safeBag": [
  //           {
  //             "type": "certBag",
  //             "attrs": {
  //               "localKeyId": "16777216"
  //             },
  //             "subject": "EE",
  //             "serialNumber": "1a9da86df17ad411bb413b2aa724fe56fc71242d"
  //           },
  //           {
  //             "type": "certBag",
  //             "subject": "CA",
  //             "serialNumber": "02742228acbf3dd2e71f403abd8281ab6d70d490"
  //           }
  //         ]
  //       }
  //     ]
  //   }
  // }

  // Use this online tool to generate parsing code from sample JSON: 
  // Generate Parsing Code from JSON

  // In the above JSON, we can see the .pfx contains one private key (a pkcs8ShroudedKeyBag) and two certificates (each in a certBag).
  // The certificates in a .pfx/.p12 are typicaly a single certificate with associated private key, along with the other certificates
  // in the chain of authentication.

  // We can see that the private key has 3 safebag attributes: localKeyId, keyContainerName, and msStorageProvider.
  // The certificate associated with the private key contains one safebag attribute: localKeyId.
  // Notice the localKeyId is the same.  The localKeyId helps associate the private key that corresponds to the given certificate.

  // Let's demonstrate the GetSafeBagAttr method:

  // Get each of the private key safebag attributes:
  var getPrivateKeyAttr = true;
  final privateKeyIdx = 0;
  print('---- private key safebag attributes ----');
  print(pfx.getSafeBagAttr(getPrivateKeyAttr, privateKeyIdx, 'localKeyId'));
  print(pfx.getSafeBagAttr(getPrivateKeyAttr, privateKeyIdx, 'keyContainerName'));
  print(pfx.getSafeBagAttr(getPrivateKeyAttr, privateKeyIdx, 'storageProvider'));

  // Get the localKeyId attribute for the 1st certificate.
  getPrivateKeyAttr = false;
  print('---- cert safebag attributes ----');
  print(pfx.getSafeBagAttr(getPrivateKeyAttr, 0, 'localKeyId'));
}