(Android™) Italian FatturaPA (e-Invoice) Signed XML (CADES-BES P7M) using USB SmartCard Reader

Demonstrates Italian e-Invoice (FatturaPA) signing by using a private key stored on a USB smartcard reader.

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

    CkCrypt2 crypt = new CkCrypt2();
    crypt.put_VerboseLogging(true);

    CkCert cert = new CkCert();
    // Use your smart card user PIN for signing.
    cert.put_SmartCardPin("0000");

    boolean success = cert.LoadFromSmartcard("");
    if (success == false) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

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

    // The CadesEnabled property applies to all methods that create PKCS7 signatures. 
    // To create a CAdES-BES signature, set this property equal to true.
    crypt.put_CadesEnabled(true);

    crypt.put_HashAlgorithm("sha256");

    CkJsonObject signedAttrs = new CkJsonObject();
    signedAttrs.UpdateInt("contentType",1);
    signedAttrs.UpdateInt("signingTime",1);
    signedAttrs.UpdateInt("messageDigest",1);
    signedAttrs.UpdateInt("signingCertificateV2",1);
    crypt.put_SigningAttributes(signedAttrs.emit());

    // Load XML such as the following:
    //  <p:FatturaElettronica xmlns:p="http://ivaservizi.agenziaentrate.gov.it/docs/xsd/fatture/v1.2" versione="FPR12">
    //     <FatturaElettronicaHeader>
    //        <DatiTrasmissione>
    // 	...
    //        </DatiTrasmissione>
    //        <CedentePrestatore>
    // 	...
    //        </CedentePrestatore>
    //        <CessionarioCommittente>
    // 	...
    //        </CessionarioCommittente>
    //     </FatturaElettronicaHeader>
    //     <FatturaElettronicaBody>
    //        <DatiGenerali>
    //           <DatiGeneraliDocumento>
    // 		...
    //           </DatiGeneraliDocumento>
    //        </DatiGenerali>
    //        <DatiBeniServizi>
    // 	...
    //        </DatiBeniServizi>
    //     </FatturaElettronicaBody>
    //  </p:FatturaElettronica>

    String inputXmlPath = "c:/someDir/e-Invoice.xml";
    String outputP7mPath = "c:/someDir/signed.p7m";

    // Create the CAdES-BES attached signature, which contains the original data.
    success = crypt.CreateP7M(inputXmlPath,outputP7mPath);
    if (success == false) {
        Log.i(TAG, crypt.lastErrorText());
        return;
        }

    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."
  }
}