jp.co.anaheim_eng.aessample.MainActivity.java Source code

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Here is the source code for jp.co.anaheim_eng.aessample.MainActivity.java

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/* 
 * MainActivity.java
 *
 * Created on: 2011/07/26
 * AUTHOR:   Reiki Hattori - http://www.anaheim-eng.co.jp/
 * Copyright (c) 2011, Anaheim Engineering Co.,LTD. All rights reserved.
 * Copyright (c) 2011, Johospace Co.,Ltd. All rights reserved.
 *
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jp.co.anaheim_eng.aessample;

import java.util.ArrayList;

import org.apache.commons.codec.binary.Hex;

import jp.co.anaheim_eng.aes.AESLib;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnClickListener {

    static private ArrayList<String> mPlainText;
    static private ArrayList<byte[]> mCiphers;
    static private String mPassword;
    static private String mSalt;
    static private int mKeyBitLen;

    private Button btnEncode;
    private Button btnDecode;
    private Button btnPref;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        btnEncode = (Button) findViewById(R.id.btn_encode);
        btnEncode.setOnClickListener(this);
        btnDecode = (Button) findViewById(R.id.btn_decode);
        btnDecode.setOnClickListener(this);
        btnPref = (Button) findViewById(R.id.btn_pref);
        btnPref.setOnClickListener(this);

        if (getPreferences() == false) {
            Intent intent = new Intent(this, MainPreferenceActivity.class);
            startActivity(intent);
        }
    }

    @Override
    public void onClick(View v) {
        byte[] bytes;

        try {
            switch (v.getId()) {
            case R.id.btn_encode: {
                if (getPreferences() == false) {
                    Intent intent = new Intent(this, MainPreferenceActivity.class);
                    startActivity(intent);
                    return;
                }
                // Create AES Library object
                AESLib al = new AESLib(mKeyBitLen, mPassword, mSalt);
                al.setPlainText(mPlainText);
                al.Encode();
                // Encode result
                mCiphers = al.getCiphers();
                StringBuilder sb = new StringBuilder();
                sb.append("AES Encode result [" + String.valueOf(mKeyBitLen) + "bit]\n");
                for (int i = 0; i < 3; i++) {
                    sb.append("No." + String.valueOf(i + 1) + "\n");
                    sb.append("Plain Text:" + mPlainText.get(i) + "\n");
                    bytes = mCiphers.get(i);
                    sb.append("Cipher    :" + String.valueOf(Hex.encodeHex(bytes)) + "\n");
                }
                TextView tv = (TextView) findViewById(R.id.textView1);
                tv.setText(sb);
                break;
            }
            case R.id.btn_decode: {
                if ((mCiphers == null) || (mCiphers.size() == 0)) {
                    Toast.makeText(this, R.string.err_nonecipher, Toast.LENGTH_LONG).show();
                    return;
                }
                // Create AES Library object
                AESLib al = new AESLib(mKeyBitLen, mPassword, mSalt);
                al.setCiphers(mCiphers);
                al.Decode();
                // Decode result
                mPlainText = al.getPlainText();
                StringBuilder sb = new StringBuilder();
                sb.append("AES Decode result [" + String.valueOf(mKeyBitLen) + "bit]\n");
                for (int i = 0; i < 3; i++) {
                    sb.append("No." + String.valueOf(i + 1) + "\n");
                    bytes = mCiphers.get(i);
                    sb.append("Cipher    :" + String.valueOf(Hex.encodeHex(bytes)) + "\n");
                    sb.append("Plain Text:" + mPlainText.get(i) + "\n");
                }
                TextView tv = (TextView) findViewById(R.id.textView1);
                tv.setText(sb);
                break;
            }
            case R.id.btn_pref: {
                Intent intent = new Intent(this, MainPreferenceActivity.class);
                startActivity(intent);
                break;
            }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private boolean getPreferences() {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        mPassword = prefs.getString("edt_password", "");
        if (mPassword.length() == 0)
            return false;
        mSalt = prefs.getString("edt_salt", "");
        if (mSalt.length() == 0)
            return false;

        mKeyBitLen = Integer.parseInt(prefs.getString("lst_keybitlen", ""));
        if (mKeyBitLen == 0)
            return false;

        mPlainText = null;
        mPlainText = new ArrayList<String>();
        mCiphers = null;
        mCiphers = new ArrayList<byte[]>();

        String PlainText;
        PlainText = prefs.getString("edt_plaintext1", "");
        mPlainText.add(PlainText);
        PlainText = prefs.getString("edt_plaintext2", "");
        mPlainText.add(PlainText);
        PlainText = prefs.getString("edt_plaintext3", "");
        mPlainText.add(PlainText);

        return true;
    }
}