Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/**
 * Copyright 2015 Handhandlab.com
 *
 * This file is part of AgentDroid.
 *
 *  AgentDroid 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.
 *
 *  AgentDroid 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 AgentDroid. If not, see <http://www.gnu.org/licenses/>.
 *
 */

import android.content.Context;

import java.io.File;
import java.io.FileInputStream;

import java.io.IOException;

import java.security.KeyFactory;
import java.security.KeyPair;

import java.security.NoSuchAlgorithmException;

import java.security.PrivateKey;
import java.security.PublicKey;

import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;

public class Main {
    public static KeyPair loadKeyPair(Context context, String name)
            throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
        // Read Public Key.
        File filePublicKey = new File(context.getFilesDir(), name + "_public.key");
        FileInputStream fis = new FileInputStream(filePublicKey);
        byte[] encodedPublicKey = new byte[(int) filePublicKey.length()];
        fis.read(encodedPublicKey);
        fis.close();

        // Read Private Key.
        File filePrivateKey = new File(context.getFilesDir(), name + "_private.key");
        fis = new FileInputStream(filePrivateKey);
        byte[] encodedPrivateKey = new byte[(int) filePrivateKey.length()];
        fis.read(encodedPrivateKey);
        fis.close();

        // Generate KeyPair.
        KeyFactory keyFactory = KeyFactory.getInstance("RSA");
        X509EncodedKeySpec publicKeySpec = new X509EncodedKeySpec(encodedPublicKey);
        PublicKey publicKey = keyFactory.generatePublic(publicKeySpec);

        PKCS8EncodedKeySpec privateKeySpec = new PKCS8EncodedKeySpec(encodedPrivateKey);
        PrivateKey privateKey = keyFactory.generatePrivate(privateKeySpec);

        return new KeyPair(publicKey, privateKey);
    }
}