Android使用SQLCipher对SQLite数据库进行加密

MainActivity如下:

package cc.testsqlcipher;import net.sqlcipher.Cursor;import net.sqlcipher.database.SQLiteDatabase;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.app.Activity;/** * Demo描述: * 使用SQLCipher对SQLite数据库进行加密 *  * 参考资料: * 1 http://blog.csdn.net/guolin_blog/article/details/11952409 * 2 http://blog.csdn.net/zhuawami/article/details/9038003 *   Thank you very much */public class MainActivity extends Activity {private Button mAddButton;    private Button mQueryButton;    private SQLiteDatabase mSqLiteDatabase;    private SQLCipherOpenHelper mSqlCipherOpenHelper;    private final String SECRET_KEY="95279527";@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);initView();initDataBase();}private void initView(){mAddButton=(Button) findViewById(R.id.addButton);mAddButton.setOnClickListener(new ClickListenerImpl());mQueryButton=(Button) findViewById(R.id.queryButton);mQueryButton.setOnClickListener(new ClickListenerImpl());}private void initDataBase() {//加载libs/armeabi中的so        SQLiteDatabase.loadLibs(this);        //获取到SQLiteOpenHelper        mSqlCipherOpenHelper=new SQLCipherOpenHelper(this);        //设置打开数据库的密码SECRET_KEYmSqLiteDatabase = mSqlCipherOpenHelper.getWritableDatabase(SECRET_KEY);  }private class ClickListenerImpl implements OnClickListener {private Person person;@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.addButton:for (int i = 0; i < 15; i++) {person = new Person("xiaoming" + i, "9527" + i);addData(person);}break;case R.id.queryButton:                person=queryData(8);                System.out.println(""+person.toString());break;default:break;}}}public void addData(Person person) {mSqLiteDatabase.execSQL("insert into person (name,phone) values(?,?)",                 new Object[] {person.getName(), person.getPhone() });}public Person queryData(int id){Cursor cursor=mSqLiteDatabase.rawQuery("select * from person where personid=?",                                 new String[]{String.valueOf(id)});while(cursor.moveToFirst()){int personid=cursor.getInt(cursor.getColumnIndex("personid"));String name=cursor.getString(cursor.getColumnIndex("name"));String phone=cursor.getString(cursor.getColumnIndex("phone"));return new Person(personid, name, phone);}cursor.close();return null;}}

SQLCipherOpenHelper如下:

package cc.testsqlcipher;import android.content.Context;import net.sqlcipher.database.SQLiteDatabase;import net.sqlcipher.database.SQLiteOpenHelper;/** * 注意: * 这里包的引用,均是在: * net.sqlcipher.database之下 */public class SQLCipherOpenHelper extends SQLiteOpenHelper {    private final static String DATABASE_NAME="test.db";public SQLCipherOpenHelper(Context context) {super(context, DATABASE_NAME, null, 1);}@Overridepublic void onCreate(SQLiteDatabase db) {db.execSQL("create table person(personid integer primary key autoincrement,name varchar(20),phone VARCHAR(12))");}@Overridepublic void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {}}

 

Person如下:

package cc.testsqlcipher;public class Person {private Integer id;private String name;private String phone;public Person(String name, String phone) {this.name = name;this.phone = phone;}public Person(Integer id, String name, String phone) {this.id = id;this.name = name;this.phone = phone;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPhone() {return phone;}public void setPhone(String phone) {this.phone = phone;}@Overridepublic String toString() {return "Person [id=" + id + ", name=" + name + ", phone=" + phone + "]";}}

 

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="使用SQLCipher对数据库进行加密"         android:layout_centerHorizontal="true"    />         <Button        android:id="@+id/addButton"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="添加数据"        android:layout_marginTop="100dip"       />           <Button        android:id="@+id/queryButton"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="查找数据"        android:layout_marginTop="200dip"       /></RelativeLayout>