Dart

Create CAdES Signature (.p7s) Compliant with ICP-Brazil Digital Signature Standard

See more CAdES Examples

Demonstrates how to create a CMS signature w/ policy ID that is compliant with the ICP-Brazil Digital Signature Standard. 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.

  // ------------------------------------------------------------------------------------------------------
  // Note: This example creates a CAdES (CMS) signature (.p7s) that contains the PDF.
  // It is different than signing a PDF.  To sign a PDF where the resulting PDF contains the CMS signature,
  // see this example:  Sign PDF for ICP-Brasil
  // ------------------------------------------------------------------------------------------------------

  final crypt = CkCrypt2();

  final cert = CkCert();
  try {
    cert.loadPfxFile('mySigningCert.pfx', 'pfxPassword');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  crypt.setSigningCert(cert);

  // See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital

  // Create JSON to indicate which signing attributes to include.
  final attrs = CkJsonObject();
  attrs.updateBool('contentType', true);
  attrs.updateBool('signingTime', true);
  attrs.updateBool('messageDigest', true);
  attrs.updateBool('signingCertificateV2', true);

  attrs.updateString('policyId.hashAlg', 'SHA256');

  // Listed here are the currently existing profiles. (Chilkat will add additional ICP Brasil policy profiles in future versions as new ones are created.)
  // See https://www.gov.br/iti/pt-br/assuntos/repositorio/artefatos-de-assinatura-digital for more information.
  // 
  // PA_AD_RA --> 2.16.76.1.7.1.5.1
  // PA_AD_RA_v1_1 --> 2.16.76.1.7.1.5.1.1
  // PA_AD_RA_v1_2 --> 2.16.76.1.7.1.5.1.2
  // PA_AD_RA_v2_0 --> 2.16.76.1.7.1.5.2
  // PA_AD_RA_v2_1 --> 2.16.76.1.7.1.5.2.1
  // PA_AD_RA_v2_2 --> 2.16.76.1.7.1.5.2.2
  // PA_AD_RA_v2_3 --> 2.16.76.1.7.1.5.2.3
  // PA_AD_RA_v2_4 --> 2.16.76.1.7.1.5.2.4
  // PA_AD_RB --> 2.16.76.1.7.1.1.1
  // PA_AD_RB_v1_1 --> 2.16.76.1.7.1.1.1.1
  // PA_AD_RB_v2_0 --> 2.16.76.1.7.1.1.2
  // PA_AD_RB_v2_1 --> 2.16.76.1.7.1.1.2.1
  // PA_AD_RB_v2_2 --> 2.16.76.1.7.1.1.2.2
  // PA_AD_RB_v2_3 --> 2.16.76.1.7.1.1.2.3
  // PA_AD_RC --> 2.16.76.1.7.1.4.1
  // PA_AD_RC_v1_1 --> 2.16.76.1.7.1.4.1.1
  // PA_AD_RC_v2_0 --> 2.16.76.1.7.1.4.2
  // PA_AD_RC_v2_1 --> 2.16.76.1.7.1.4.2.1
  // PA_AD_RC_v2_2 --> 2.16.76.1.7.1.4.2.2
  // PA_AD_RC_v2_3 --> 2.16.76.1.7.1.4.2.3
  // PA_AD_RT --> 2.16.76.1.7.1.2.1
  // PA_AD_RT_v1_1 --> 2.16.76.1.7.1.2.1.1
  // PA_AD_RT_v2_0 --> 2.16.76.1.7.1.2.2
  // PA_AD_RT_v2_1 --> 2.16.76.1.7.1.2.2.1
  // PA_AD_RT_v2_2 --> 2.16.76.1.7.1.2.2.2
  // PA_AD_RT_v2_3 --> 2.16.76.1.7.1.2.2.3
  // PA_AD_RV --> 2.16.76.1.7.1.3.1
  // PA_AD_RV_v1_1 --> 2.16.76.1.7.1.3.1.1
  // PA_AD_RV_v2_0 --> 2.16.76.1.7.1.3.2
  // PA_AD_RV_v2_1 --> 2.16.76.1.7.1.3.2.1
  // PA_AD_RV_v2_2 --> 2.16.76.1.7.1.3.2.2
  // PA_AD_RV_v2_3 --> 2.16.76.1.7.1.3.2.3

  // Set the policy OID and the profile name
  attrs.updateString('policyId.id', '2.16.76.1.7.1.1.2.3');
  attrs.updateString('policyId.profile', 'PA_AD_RB_v2_3');

  crypt.signingAttributes = attrs.emit();

  // The input file can be any type of file.
  final inFile = 'toBeSigned.pdf';
  final outFile = 'signed.pdf.p7s';

  try {
    crypt.createP7M(inFile, outFile);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Success.');
}