com.scorpio4.util.io.IOStreamCrypto.java Source code

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Here is the source code for com.scorpio4.util.io.IOStreamCrypto.java

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package com.scorpio4.util.io;
/*
 *   Scorpio4 - Apache Licensed
 *   Copyright (c) 2009-2014 Lee Curtis, All Rights Reserved.
 *
 *
 */

import org.apache.commons.codec.binary.Base64InputStream;
import org.apache.commons.codec.binary.Base64OutputStream;

import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

/**
 * Scorpio4 (c) 2013
 * Module: com.scorpio4.util.io
 * @author lee
 * Date  : 10/01/2014
 * Time  : 2:54 PM
 */
public class IOStreamCrypto {
    byte[] bytePassword = null;
    final byte[] ivBytes = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
            0x0c, 0x0d, 0x0e, 0x0f }; //example
    String cipherTransformation = "AES/CFB8/NoPadding";
    String cipherSpec = "AES";

    public IOStreamCrypto(String password) {
        this.bytePassword = password.getBytes();
    }

    public IOStreamCrypto(byte[] bytePassword) {
        this.bytePassword = bytePassword;
    }

    public CipherOutputStream encrypt(OutputStream out) throws NoSuchPaddingException, NoSuchAlgorithmException,
            InvalidAlgorithmParameterException, InvalidKeyException {
        final SecretKey key = new SecretKeySpec(bytePassword, cipherSpec);
        final IvParameterSpec IV = new IvParameterSpec(ivBytes);
        final Cipher cipher = Cipher.getInstance(cipherTransformation);
        cipher.init(Cipher.ENCRYPT_MODE, key, IV);
        return new CipherOutputStream(new Base64OutputStream(out), cipher);
    }

    public CipherInputStream decrypt(InputStream in) throws NoSuchPaddingException, NoSuchAlgorithmException,
            InvalidAlgorithmParameterException, InvalidKeyException {
        final SecretKey key = new SecretKeySpec(bytePassword, cipherSpec);
        final IvParameterSpec IV = new IvParameterSpec(ivBytes);
        final Cipher cipher = Cipher.getInstance(cipherTransformation);
        cipher.init(Cipher.DECRYPT_MODE, key, IV);
        return new CipherInputStream(new Base64InputStream(in), cipher);
    }
}