(Android™) Create a WinZip/7-Zip compatible AES Encrypted Zip

Creates a WinZip compatible AES-encrypted .zip archive

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.

    CkZip zip = new CkZip();

    boolean success = zip.NewZip("/myZipDir/aes.zip");
    if (success != true) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    // Set properties to indicate that the Zip should be
    // AES encrypted.

    // A value of 4 indicates WinZip compatible AES encryption.
    zip.put_Encryption(4);

    // Key length can be 128, 192, or 256 bits.
    zip.put_EncryptKeyLength(128);

    // Set the password for AES encryption:
    zip.put_EncryptPassword("myPassword");

    // Add a directory tree to be zipped.  (The files
    // are not compressed at this point -- only references
    // to the files and directories are added to the zip object.)
    boolean recurse = true;
    success = zip.AppendFiles("c:/temp/a/*",recurse);
    if (success != true) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    // Create the encrypted zip ("/myZipDir/aes.zip")
    // The path of the zip is what was originally passed
    // to the NewZip method (above).  
    boolean success = zip.WriteZipAndClose();
    if (success != true) {
        Log.i(TAG, zip.lastErrorText());
        return;
        }

    Log.i(TAG, "Created AES Encrypted Zip.");

  }

  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."
  }
}