Dart

Extract XML string from a .p7m byte array (e.g. FATTURA ELETTRONICA, ITALY)

See more Digital Signatures Examples

_LANGUAGE_ example to extract the original XML from a .p7m (Signed-Data PKCS7 Format) provided as a byte array.

One use for this example is to extract the original XML from a Fattura Elettronica .p7m signature.

Dart

import 'package:chilkat/chilkat.dart';

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

  final fac = CkFileAccess();
  final p7mBytes = fac.readEntireFile('testData/p7m/fattura_signature.p7m');
  if (!fac.lastMethodSuccess) {
    print(fac.lastErrorText);
    return;
  }

  final crypt = CkCrypt2();

  final String originalXml;
  try {
    originalXml = crypt.opaqueVerifyString(p7mBytes);
  } on ChilkatException {
    print(fac.lastErrorText);
    return;
  }

  print('Original XML:');
  print(originalXml);

  print('Success!');
}