com.alachisoft.ncache.security.encryption.AESEncryption Maven / Gradle / Ivy

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Internal package of Alachisoft.

There is a newer version: 5.3.3

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.alachisoft.ncache.security.encryption;

import com.alachisoft.ncache.runtime.encryption.Encryption;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.util.HashMap;

/**
 * @author muhammad_sami
 */
public class AESEncryption implements Encryption {

    private static String s_iv = "ZCBMTYIPQEFGJHAL";
    private static String algorithm = "AES";
    private static String transformation = "AES/CBC/PKCS5Padding";

    public static byte[] ConvertStringToByteArray(String s) {
        try {
            return s.getBytes();//s.getBytes("ASCII");
        } catch (Exception ex) {
            return null;
        }
    }

    public static String ConvertBytesToString(byte[] bytes) {
        try {
            return new String(bytes, "UTF-8");
        } catch (Throwable ex) {
            return null;
        }
    }

    @Override
    public void Intialize(HashMap parameters) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public byte[] Encrypt(byte[] data, String key) {
        try {
            byte[] k = ConvertStringToByteArray(key);
            byte[] IV = ConvertStringToByteArray(s_iv);
            SecretKeySpec securityKey = new SecretKeySpec(k, algorithm);
            Cipher encrypter = Cipher.getInstance(transformation);
            encrypter.init(Cipher.ENCRYPT_MODE, securityKey, new IvParameterSpec(IV));
            return encrypter.doFinal(data);
        } catch (Exception e) {
            return data;
        }
    }

    @Override
    public byte[] Decrypt(byte[] data, String key) {
        try {
            byte[] k = ConvertStringToByteArray(key);
            byte[] IV = ConvertStringToByteArray(s_iv);
            SecretKeySpec securityKey = new SecretKeySpec(k, algorithm);
            Cipher encrypter = Cipher.getInstance(transformation);
            encrypter.init(Cipher.DECRYPT_MODE, securityKey, new IvParameterSpec(IV));
            byte[] returner = encrypter.doFinal(data);
            return returner;
        } catch (Exception e) {
            return data;
        }
    }
}