(Android™) Create CAdES (p7m) Signature using ARSS (Aruba Remote Signing Service)

See more Signing in the Cloud Examples

Note: This example requires Chilkat v9.5.0.96 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 assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Load the certificate used for signing.  The certificate's private key is stored on 
    // the Aruba.it server and the signing will happen remotely using the
    // ARSS (Aruba Remote Signing Service).
    // However, we still need the certificate locally (without private key).
    CkCert cert = new CkCert();
    boolean success = cert.LoadFromFile("qa_data/certs/myCert.cer");
    if (success == false) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    // To sign using the Aruba Remote Signing Service, 
    // add the following lines of code to specify your authentication credentials,
    // and the ID of the certificate w/ private key on the server to be used.
    CkJsonObject jsonArss = new CkJsonObject();

    // Set the "service" equal to "ARSS" to tell Chilkat to use ARSS for signing.
    jsonArss.UpdateString("service","ARSS");
    // Specify the certificate ID, such as "AS0"
    // This certificate should match the certificate loaded in the above code.
    jsonArss.UpdateString("certID","YOUR_ARSS_CERT_ID");
    jsonArss.UpdateString("otpPwd","YOUR_OTP_PWD");
    jsonArss.UpdateString("typeOtpAuth","demoprod");
    jsonArss.UpdateString("user","YOUR_ARSS_USERNAME");
    jsonArss.UpdateString("userPWD","YOUR_ARSS_PASSWORD");
    success = cert.SetCloudSigner(jsonArss);

    CkCrypt2 crypt = new CkCrypt2();

    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());

    // You can sign any type of file..
    String inputXmlPath = "qa_data/e-Invoice.xml";
    String outputP7mPath = "qa_output/signed.p7m";

    // Create the CAdES-BES attached signature, which contains the original data.
    // Chilkat will build the .p7m locally, but will (internally) use ARSS
    // to do the RSA signing remotely.
    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."
  }
}