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

Demonstrates how to create a .p7s signature that contains a data file, which in this case is a PDF. The .p7s will be compliant with the ICP-Brazil Digital Signature Standard.

Important: This example requires Chilkat v9.5.0.92 or later.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

    CkCrypt2 crypt = new CkCrypt2();

    // Any type of file can be signed.  It doesn't have to be a PDF.
    String inFile = "qa_data/pdf/helloWorld.pdf";

    CkBinData bd = new CkBinData();
    boolean success = bd.LoadFile(inFile);
    if (success == false) {
        Log.i(TAG, "Failed to load " + inFile);
        return;
        }

    // Get the certificate we'll be using to sign.
    CkCert cert = new CkCert();

    success = cert.LoadPfxFile("qa_data/pfx/cert_test123.pfx","test123");
    if (success == false) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    success = crypt.SetSigningCert(cert);
    if (success == false) {
        Log.i(TAG, crypt.lastErrorText());
        return;
        }

    // Set properties for signing...
    crypt.put_HashAlgorithm("sha256");

    CkJsonObject jsonSigningAttrs = new CkJsonObject();
    jsonSigningAttrs.UpdateInt("contentType",1);
    jsonSigningAttrs.UpdateInt("signingTime",1);
    jsonSigningAttrs.UpdateInt("messageDigest",1);
    jsonSigningAttrs.UpdateInt("signingCertificateV2",1);

    // 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
    jsonSigningAttrs.UpdateString("policyId.id","2.16.76.1.7.1.1.2.3");
    jsonSigningAttrs.UpdateString("policyId.profile","PA_AD_RB_v2_3");

    crypt.put_SigningAttributes(jsonSigningAttrs.emit());

    // Sign. 
    success = crypt.OpaqueSignBd(bd);
    if (success == false) {
        Log.i(TAG, crypt.lastErrorText());
        return;
        }

    // Save to a .p7s
    success = bd.WriteFile("qa_output/helloWorld.pdf.p7s");

    Log.i(TAG, "Success");

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}