A.java

package org.teamsik.apps.hackingchallenge;

import android.content.Context;
import android.util.Base64;

public abstract class a
{
  public static boolean a(Context paramContext, String paramString)
  {
    byte[] arrayOfByte1 = a(paramString);
    byte[] arrayOfByte2 = Base64.decode("BFF1NwF1YRTl", 2);
    if (arrayOfByte1.length != arrayOfByte2.length)
      return false;
    for (int i = 0; ; i++)
    {
      if (i >= arrayOfByte1.length)
        break label48;
      if (arrayOfByte1[i] != arrayOfByte2[i])
        break;
    }
    label48: return true;
  }

  private static byte[] a(String paramString)
  {
    byte[] arrayOfByte = paramString.getBytes();
    for (int i = 0; i < arrayOfByte.length; i++)
    {
      arrayOfByte[i] = ((byte)(0xFF & arrayOfByte[i] << 4 | arrayOfByte[i] >> 4));
      arrayOfByte[i] = ((byte)(0x42 ^ arrayOfByte[i]));
    }
    return arrayOfByte;
  }
}

MainActivity.java

package org.teamsik.apps.hackingchallenge;

import android.app.Dialog;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.v7.a.b;
import android.support.v7.a.u;
import android.util.Log;
import android.util.TypedValue;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.Toast;

public class MainActivity extends u
{
  private static final String i = MainActivity.class.getSimpleName();
  private EditText j = null;

  private int a(int paramInt)
  {
    return (int)TypedValue.applyDimension(1, paramInt, getResources().getDisplayMetrics());
  }

  private void j()
  {
    android.support.v7.a.a locala = f();
    locala.a(2131099669);
    locala.b(0x10 | locala.a());
    ImageView localImageView = new ImageView(locala.b());
    localImageView.setScaleType(ImageView.ScaleType.FIT_END);
    localImageView.setImageResource(2130837574);
    b localb = new b(a(150), -1, 8388629);
    localb.rightMargin = 0;
    localb.topMargin = a(12);
    localb.bottomMargin = a(12);
    localImageView.setLayoutParams(localb);
    locala.a(localImageView);
  }

  private void k()
  {
    Dialog localDialog = new Dialog(this);
    localDialog.requestWindowFeature(1);
    localDialog.setTitle(2131099672);
    localDialog.setContentView(2130968602);
    localDialog.show();
  }

  protected void onCreate(Bundle paramBundle)
  {
    super.onCreate(paramBundle);
    setContentView(2130968601);
    j();
    String str = i;
    Object[] arrayOfObject = new Object[1];
    arrayOfObject[0] = Integer.valueOf(1);
    Log.i(str, String.format("Challenge Difficulty: %d", arrayOfObject));
  }

  protected void onStart()
  {
    super.onStart();
    this.j = ((EditText)findViewById(2131492944));
  }

  public void verifyPasswordClick(View paramView)
  {
    if (!a.a(this, this.j.getText().toString()))
    {
      Toast.makeText(this, 2131099670, 1).show();
      return;
    }
    k();
  }
}