Dart

Example: Crypt2.GetSignedAttributes method

Demonstrates how to call the GetSignedAttributes method. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  final crypt = CkCrypt2();

  final bdPkcs7 = CkBinData();
  try {
    bdPkcs7.loadFile('qa_data/cades/CAdES-T/Signature-C-T-1.p7m');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final json = CkJsonObject();
  json.emitCompact = false;

  final sbJson = CkStringBuilder();
  var i = 0;
  var tryNext = true;
  while (tryNext) {
    if (crypt.getSignedAttributes(i, bdPkcs7, sbJson)) {
      json.loadSb(sbJson);
      print('$i: ');
      print(json.emit());
    } else {
      tryNext = false;
    }

    i++;
  }

  // Sample output:

  // 0: 
  // {
  //   "signedAttributes": [
  //     {
  //       "oid": "1.2.840.113549.1.9.3",
  //       "name": "Content Type"
  //     },
  //     {
  //       "oid": "1.2.840.113549.1.9.5",
  //       "name": "Signing Time"
  //     },
  //     {
  //       "oid": "1.2.840.113549.1.9.4",
  //       "name": "Message Digest"
  //     },
  //     {
  //       "oid": "1.2.840.113549.1.9.16.2.47",
  //       "name": "Signing Certificate V2"
  //     }
  //   ]
  // }
}