Code/Resource
Windows Develop
Linux-Unix program
Internet-Socket-Network
Web Server
Browser Client
Ftp Server
Ftp Client
Browser Plugins
Proxy Server
Email Server
Email Client
WEB Mail
Firewall-Security
Telnet Server
Telnet Client
ICQ-IM-Chat
Search Engine
Sniffer Package capture
Remote Control
xml-soap-webservice
P2P
WEB(ASP,PHP,...)
TCP/IP Stack
SNMP
Grid Computing
SilverLight
DNS
Cluster Service
Network Security
Communication-Mobile
Game Program
Editor
Multimedia program
Graph program
Compiler program
Compress-Decompress algrithms
Crypt_Decrypt algrithms
Mathimatics-Numerical algorithms
MultiLanguage
Disk/Storage
Java Develop
assembly language
Applications
Other systems
Database system
Embeded-SCM Develop
FlashMX/Flex
source in ebook
Delphi VCL
OS Develop
MiddleWare
MPI
MacOS develop
LabView
ELanguage
Software/Tools
E-Books
Artical/Document
MapleCustomEncryption.java
Package: src.rar [view]
Upload User: gwt600
Upload Date: 2021-06-03
Package Size: 704k
Code Size: 3k
Category:
Games
Development Platform:
Java
- /*
- This file is part of the OdinMS Maple Story Server
- Copyright (C) 2008 Patrick Huy <patrick.huy@frz.cc>
- Matthias Butz <matze@odinms.de>
- Jan Christian Meyer <vimes@odinms.de>
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Affero General Public License version 3
- as published by the Free Software Foundation. You may not use, modify
- or distribute this program under any other version of the
- GNU Affero General Public License.
- This program 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 Affero General Public License for more details.
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
- package net.sf.odinms.tools;
- /**
- * Provides MapleStory's custom encryption routines.
- *
- * @author Frz
- * @since Revision 211
- * @version 1.0
- */
- public class MapleCustomEncryption {
- /**
- * Encrypts <code>data</code> with Maple's encryption routines.
- *
- * @param data The data to encrypt.
- * @return The encrypted data.
- */
- public static byte[] encryptData(byte data[]) {
- for (int j = 0; j < 6; j++) {
- byte remember = 0;
- byte dataLength = (byte) (data.length & 0xFF);
- // printByteArray(data);
- if (j % 2 == 0) {
- for (int i = 0; i < data.length; i++) {
- byte cur = data[i];
- cur = BitTools.rollLeft(cur, 3);
- cur += dataLength;
- cur ^= remember;
- remember = cur;
- cur = BitTools.rollRight(cur, (int)dataLength & 0xFF);
- cur = ((byte) ((~cur) & 0xFF));
- cur += 0x48;
- dataLength--;
- data[i] = cur;
- }
- } else {
- for (int i = data.length - 1; i >= 0; i--) {
- byte cur = data[i];
- cur = BitTools.rollLeft(cur, 4);
- cur += dataLength;
- cur ^= remember;
- remember = cur;
- cur ^= 0x13;
- cur = BitTools.rollRight(cur, 3);
- dataLength--;
- data[i] = cur;
- }
- }
- //System.out.println("enc after iteration " + j + ": " + HexTool.toString(data) + " al: " + al);
- }
- return data;
- }
- /**
- * Decrypts <code>data</code> with Maple's encryption routines.
- *
- * @param data The data to decrypt.
- * @return The decrypted data.
- */
- public static byte[] decryptData(byte data[]) {
- for (int j = 1; j <= 6; j++) {
- byte remember = 0;
- byte dataLength = (byte) (data.length & 0xFF);
- byte nextRemember = 0;
- if (j % 2 == 0) {
- for (int i = 0; i < data.length; i++) {
- byte cur = data[i];
- cur -= 0x48;
- cur = ((byte) ((~cur) & 0xFF));
- cur = BitTools.rollLeft(cur, (int)dataLength & 0xFF);
- nextRemember = cur;
- cur ^= remember;
- remember = nextRemember;
- cur -= dataLength;
- cur = BitTools.rollRight(cur, 3);
- data[i] = cur;
- dataLength--;
- }
- } else {
- for (int i = data.length - 1; i >= 0; i--) {
- byte cur = data[i];
- cur = BitTools.rollLeft(cur, 3);
- cur ^= 0x13;
- nextRemember = cur;
- cur ^= remember;
- remember = nextRemember;
- cur -= dataLength;
- cur = BitTools.rollRight(cur, 4);
- data[i] = cur;
- dataLength--;
- }
- }
- //System.out.println("dec after iteration " + j + ": " + HexTool.toString(data));
- }
- return data;
- }
- }