Android™

Extract XML string from a .p7m byte array (e.g. FATTURA ELETTRONICA, ITALY)

See more Digital Signatures Examples

_LANGUAGE_ example to extract the original XML from a .p7m (Signed-Data PKCS7 Format) provided as a byte array.

One use for this example is to extract the original XML from a Fattura Elettronica .p7m signature.

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);

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

    CkFileAccess fac = new CkFileAccess();
    CkByteData p7mBytes = new CkByteData();
    success = fac.ReadEntireFile("testData/p7m/fattura_signature.p7m",p7mBytes);
    if (fac.get_LastMethodSuccess() != true) {
        Log.i(TAG, fac.lastErrorText());
        return;
        }

    CkCrypt2 crypt = new CkCrypt2();

    String originalXml = crypt.opaqueVerifyString(p7mBytes);
    if (crypt.get_LastMethodSuccess() != true) {
        Log.i(TAG, fac.lastErrorText());
        return;
        }

    Log.i(TAG, "Original XML:");
    Log.i(TAG, originalXml);

    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."
  }
}