com.bluepixel.security.manager.Server.java Source code

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Here is the source code for com.bluepixel.security.manager.Server.java

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/*
 * Copyright (c).
 *
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Win Tun Lin
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

package com.bluepixel.security.manager;

import org.apache.commons.lang3.RandomStringUtils;

import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import java.security.*;
import java.util.concurrent.ConcurrentHashMap;

public class Server {

    public static final String DEFAULT_ALGORITHM = "RSA";
    public static final String DEFAULT_ALGORITHM_PADDING = "RSA/ECB/PKCS1Padding";
    public static final int DEFAULT_KEY_LENGTH = 1024;
    public static final int DEFAULT_MAX_KEY = 50;

    public ConcurrentHashMap<String, String> secretKeys;
    public String publicKey;
    public String privateKey;

    private void init() {
        generateKey();
    }

    private void generateKey() {
        try {
            KeyPairGenerator keyGen = KeyPairGenerator.getInstance(DEFAULT_ALGORITHM);
            keyGen.initialize(DEFAULT_KEY_LENGTH);
            KeyPair keypair = keyGen.generateKeyPair();
            PublicKey pbKey = keypair.getPublic();
            PrivateKey piKey = keypair.getPrivate();

            publicKey = Base64.encodeWebSafe(pbKey.getEncoded(), false);
            privateKey = Base64.encodeWebSafe(piKey.getEncoded(), false);

            Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");

            cipher.init(Cipher.ENCRYPT_MODE, piKey);

            secretKeys = new ConcurrentHashMap<String, String>();
            String[] randomKeys = generateRandomWords(10);
            for (String key : randomKeys) {
                String cipherText = Base64.encodeWebSafe(cipher.doFinal(key.getBytes()), false);
                secretKeys.put(key, cipherText);
            }
        } catch (NoSuchAlgorithmException e) {
        } catch (InvalidKeyException e) {
        } catch (NoSuchPaddingException e) {
        } catch (IllegalBlockSizeException e) {
        } catch (BadPaddingException e) {
        }
    }

    private String[] generateRandomWords(int numberOfWords) {
        System.out.println("Server -> generateRandomWords  : " + numberOfWords);
        String[] randomStrings = new String[numberOfWords];

        for (int i = 0; i < numberOfWords; i++) {
            randomStrings[i] = new String(RandomStringUtils.randomAlphanumeric(64));
        }
        return randomStrings;
    }

    private PrivateKey getPrivateKey(String privateKeyString) {
        return null;
    }

    private PublicKey getPublicKey(String publicKeyString) {
        return null;
    }
}