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

Go to download
Show more of this group Show more artifacts with this name
Show all versions of nc-security Show documentation
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;

/**
 * @author Basit Anwer
 */

import com.alachisoft.ncache.runtime.encryption.Encryption;
//using System.IO;
//using System.Security.Cryptography;

public class EncryptionMgr implements Alachisoft.NCache.Common.IDisposable {
    //private static System.Security.Cryptography.TripleDESCryptoServiceProvider s_des;

    private static java.util.HashMap _encryptionManagers = new java.util.HashMap();
    private String _encryptionKey = null;
    private Encryption _encryptionProvider = null;
    private boolean _enabled = false;
    //static string _key = "A41'D3a##asd[1-a;d zs[s`";
    //private static string s_iv = "qwertyuiopasdfghjklmnbvc";

    //C# TO JAVA CONVERTER WARNING: Unsigned integer types have no direct equivalent in Java:
//ORIGINAL LINE: public static byte[] Encryption(byte[] data, string cacheName)
    public static byte[] Encryption(byte[] data, String cacheName) {
        EncryptionMgr mgr = GetEncryptionMgr(cacheName);
        if (mgr != null && mgr._enabled) {
            return mgr._encryptionProvider.Encrypt(data, mgr._encryptionKey);
        }
        return data;
    }

    //C# TO JAVA CONVERTER WARNING: Unsigned integer types have no direct equivalent in Java:
//ORIGINAL LINE: public static byte[] Decrypt(byte[] data, string cacheName)
    public static byte[] Decrypt(byte[] data, String cacheName) {
        EncryptionMgr mgr = GetEncryptionMgr(cacheName);
        if (mgr != null && mgr._enabled) {
            return mgr._encryptionProvider.Decrypt(data, mgr._encryptionKey);
        }
        return data;
    }

    //C# TO JAVA CONVERTER TODO TASK: There is no preprocessor in Java:
    ///#endregion
    public static void InitializeEncryption(boolean enabled, String key, String cacheName, String provider) throws Exception {
        _encryptionManagers.put(cacheName, CreateObject(enabled, key, cacheName, provider));
    }

    private static EncryptionMgr CreateObject(boolean enabled, String key, String cacheName, String provider) throws Exception {
        EncryptionMgr encryptionMgr = new EncryptionMgr();
        encryptionMgr._enabled = enabled;
        if (encryptionMgr._enabled) {

            if (provider == null || provider.isEmpty()) {
                throw new Exception("Encryption provider is Empty or Null");
            }

            encryptionMgr._encryptionKey = Alachisoft.NCache.Common.EncryptionUtil.DecryptKey(key);
            if (provider.contains("AES")) {
                boolean validKeyLength = true;
                if (provider.equals("AES 128")) {
                    validKeyLength = encryptionMgr._encryptionKey.length() == 16;
                } else if (provider.equals("AES 192")) {
                    validKeyLength = encryptionMgr._encryptionKey.length() == 24;
                } else if (provider.equals("AES 256")) {
                    validKeyLength = encryptionMgr._encryptionKey.length() == 32;
                } else {
                    throw new Exception("Invalid AES ecnryption provider is specified");
                }

                if (!validKeyLength) {
                    throw new Exception("Invalid key length for " + provider + " provider");
                } else {
                    encryptionMgr._encryptionProvider = new AESEncryption();
                }
            } else if (provider.contains("DES")) {
                boolean validKeyLength = true;
                if (provider.equals("3DES 128")) {
                    validKeyLength = encryptionMgr._encryptionKey.length() == 16;
                } else if (provider.equals("3DES 192")) {
                    validKeyLength = encryptionMgr._encryptionKey.length() == 24;
                } else {
                    throw new Exception("Invalid 3DES ecnryption provider is specified");
                }

                if (!validKeyLength) {
                    throw new Exception("Invalid key length for " + provider + " provider");
                } else {
                    encryptionMgr._encryptionProvider = new TripleDESEncryption();
                }
            } else {
                throw new Exception("Invalid encryption provider is specified");
            }

        }
        return encryptionMgr;
    }

    private static EncryptionMgr GetEncryptionMgr(String cacheName) {
        if (_encryptionManagers.containsKey(cacheName)) {
            return _encryptionManagers.get(cacheName);
        } else {
            return null;
        }
    }

    //C# TO JAVA CONVERTER TODO TASK: There is no preprocessor in Java:
    ///#region IDisposable Members
    @Override
    public final void dispose() {
    }
}