Wlan6Keygen.java

/*
 * Copyright 2012 Rui Araújo, Luís Fonseca
 *
 * This file is part of Router Keygen.
 *
 * Router Keygen is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * Router Keygen is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with Router Keygen.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.exobel.routerkeygen.algorithms;

import android.os.Parcel;
import android.os.Parcelable;

import org.exobel.routerkeygen.R;

import java.util.List;
import java.util.Locale;

public class Wlan6Keygen extends Keygen {

    public static final Parcelable.Creator<Wlan6Keygen> CREATOR = new Parcelable.Creator<Wlan6Keygen>() {
        public Wlan6Keygen createFromParcel(Parcel in) {
            return new Wlan6Keygen(in);
        }

        public Wlan6Keygen[] newArray(int size) {
            return new Wlan6Keygen[size];
        }
    };
    final private String ssidIdentifier;

    public Wlan6Keygen(String ssid, String mac) {
        super(ssid, mac);
        ssidIdentifier = ssid.substring(ssid.length() - 6);
    }


    private Wlan6Keygen(Parcel in) {
        super(in);
        ssidIdentifier = in.readString();
    }

    @Override
    public List<String> getKeys() {
        String macStr = getMacAddress();
        if (macStr.length() != 12) {
            setErrorCode(R.string.msg_errpirelli);
            return null;
        }
        char[] ssidSubPart = {'1', '2', '3', '4', '5', '6'};/*These values are not revelant.*/
        char[] bssidLastByte = {'6', '6'};
        ssidSubPart[0] = ssidIdentifier.charAt(0);
        ssidSubPart[1] = ssidIdentifier.charAt(1);
        ssidSubPart[2] = ssidIdentifier.charAt(2);
        ssidSubPart[3] = ssidIdentifier.charAt(3);
        ssidSubPart[4] = ssidIdentifier.charAt(4);
        ssidSubPart[5] = ssidIdentifier.charAt(5);
        bssidLastByte[0] = macStr.charAt(10);
        bssidLastByte[1] = macStr.charAt(11);
        for (int k = 0; k < 6; ++k)
            if (ssidSubPart[k] >= 'A')
                ssidSubPart[k] = (char) (ssidSubPart[k] - 55);

        if (bssidLastByte[0] >= 'A')
            bssidLastByte[0] = (char) (bssidLastByte[0] - 55);
        if (bssidLastByte[1] >= 'A')
            bssidLastByte[1] = (char) (bssidLastByte[1] - 55);

        for (int i = 0; i < 10; ++i) {
            /*Do not change the order of this instructions*/
            int aux = i + (ssidSubPart[3] & 0xf) + (bssidLastByte[0] & 0xf) + (bssidLastByte[1] & 0xf);
            int aux1 = (ssidSubPart[1] & 0xf) + (ssidSubPart[2] & 0xf) + (ssidSubPart[4] & 0xf) + (ssidSubPart[5] & 0xf);
            int second = aux ^ (ssidSubPart[5] & 0xf);
            int sixth = aux ^ (ssidSubPart[4] & 0xf);
            int tenth = aux ^ (ssidSubPart[3] & 0xf);
            int third = aux1 ^ (ssidSubPart[2] & 0xf);
            int seventh = aux1 ^ (bssidLastByte[0] & 0xf);
            int eleventh = aux1 ^ (bssidLastByte[1] & 0xf);
            int fourth = (bssidLastByte[0] & 0xf) ^ (ssidSubPart[5] & 0xf);
            int eighth = (bssidLastByte[1] & 0xf) ^ (ssidSubPart[4] & 0xf);
            int twelfth = aux ^ aux1;
            int fifth = second ^ eighth;
            int ninth = seventh ^ eleventh;
            int thirteenth = third ^ tenth;
            int first = twelfth ^ sixth;
            String key = Integer.toHexString(first & 0xf) + Integer.toHexString(second & 0xf) +
                    Integer.toHexString(third & 0xf) + Integer.toHexString(fourth & 0xf) +
                    Integer.toHexString(fifth & 0xf) + Integer.toHexString(sixth & 0xf) +
                    Integer.toHexString(seventh & 0xf) + Integer.toHexString(eighth & 0xf) +
                    Integer.toHexString(ninth & 0xf) + Integer.toHexString(tenth & 0xf) +
                    Integer.toHexString(eleventh & 0xf) + Integer.toHexString(twelfth & 0xf) +
                    Integer.toHexString(thirteenth & 0xf);

            addPassword(key.toUpperCase(Locale.getDefault()));
        }
        if (((ssidSubPart[0] != macStr.charAt(7)) || (ssidSubPart[1] != macStr.charAt(8)) || (ssidSubPart[2] != macStr.charAt(9)))
                && !getSsidName().startsWith("WiFi")) {
            setErrorCode(R.string.msg_err_essid_no_match);
        }
        return getResults();
    }

    public void writeToParcel(Parcel dest, int flags) {
        super.writeToParcel(dest, flags);
        dest.writeString(ssidIdentifier);
    }

}