Android™

Create Egypt ITIDA CAdES-BES .p7s Signature (File to File)

See more Egypt ITIDA Examples

Demonstrates how to create a .p7s signature that fits Egypt's ITIDA requirements. Android™

// 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);

    boolean success = false;

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

    CkCrypt2 crypt = new CkCrypt2();

    CkCert cert = new CkCert();

    // There are many ways to load the certificate.  
    // This example was created for a customer using an ePass2003 USB token.
    // Assuming the USB token is the only source of a hardware-based private key..
    success = cert.LoadFromSmartcard("");
    if (success != true) {
        Log.i(TAG, cert.lastErrorText());
        return;
        }

    // Tell the crypt component to use this cert.
    success = crypt.SetSigningCert(cert);
    if (success != true) {
        Log.i(TAG, crypt.lastErrorText());
        return;
        }

    CkJsonObject cmsOptions = new CkJsonObject();
    cmsOptions.UpdateBool("DigestData",true);
    cmsOptions.UpdateBool("OmitAlgorithmIdNull",true);
    crypt.put_CmsOptions(cmsOptions.emit());

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

    crypt.put_HashAlgorithm("sha256");

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

    // By default, all the certs in the chain of authentication are included in the signature.
    // If desired, we can choose to only include the signing certificate:
    crypt.put_IncludeCertChain(false);

    // Make sure we sign the utf-8 byte representation of the JSON string
    crypt.put_Charset("utf-8");

    // Create the CAdES-BES signature, which does not contain the data being signed.
    String pathOfFileToSign = "someDir/someFile";
    String outputPath = "outDir/someFile.p7s";
    success = crypt.CreateP7S(pathOfFileToSign,outputPath);
    if (success != true) {
        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."
  }
}