MapleAESOFB.java
资源名称:src.rar [点击查看]
上传用户:gwt600
上传日期:2021-06-03
资源大小:704k
文件大小:18k
源码类别:
游戏
开发平台:
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;
- import java.security.InvalidKeyException;
- import java.security.NoSuchAlgorithmException;
- import javax.crypto.BadPaddingException;
- import javax.crypto.Cipher;
- import javax.crypto.IllegalBlockSizeException;
- import javax.crypto.NoSuchPaddingException;
- import javax.crypto.spec.SecretKeySpec;
- import org.slf4j.LoggerFactory;
- import org.slf4j.Logger;
- /**
- * Provides a class for encrypting MapleStory packets with AES OFB encryption.
- *
- * @author Frz
- * @version 1.0
- * @since Revision 320
- */
- public class MapleAESOFB {
- private byte iv[];
- private Cipher cipher;
- private short mapleVersion;
- /* VANA */
- private static final byte[] funnyBytes = new byte[] {(byte)0xEC,(byte)0x3F, (byte)0x77, (byte)0xA4, (byte)0x45, (byte)0xD0, (byte)0x71, (byte)0xBF, (byte)0xB7, (byte)0x98, (byte)0x20, (byte)0xFC,
- (byte)0x4B, (byte)0xE9, (byte)0xB3, (byte)0xE1, (byte)0x5C, (byte)0x22, (byte)0xF7, (byte)0x0C, (byte)0x44, (byte)0x1B, (byte)0x81, (byte)0xBD, (byte)0x63, (byte)0x8D, (byte)0xD4, (byte)0xC3,
- (byte)0xF2, (byte)0x10, (byte)0x19, (byte)0xE0, (byte)0xFB, (byte)0xA1, (byte)0x6E, (byte)0x66, (byte)0xEA, (byte)0xAE, (byte)0xD6, (byte)0xCE, (byte)0x06, (byte)0x18, (byte)0x4E, (byte)0xEB,
- (byte)0x78, (byte)0x95, (byte)0xDB, (byte)0xBA, (byte)0xB6, (byte)0x42, (byte)0x7A, (byte)0x2A, (byte)0x83, (byte)0x0B, (byte)0x54, (byte)0x67, (byte)0x6D, (byte)0xE8, (byte)0x65, (byte)0xE7,
- (byte)0x2F, (byte)0x07, (byte)0xF3, (byte)0xAA, (byte)0x27, (byte)0x7B, (byte)0x85, (byte)0xB0, (byte)0x26, (byte)0xFD, (byte)0x8B, (byte)0xA9, (byte)0xFA, (byte)0xBE, (byte)0xA8, (byte)0xD7,
- (byte)0xCB, (byte)0xCC, (byte)0x92, (byte)0xDA, (byte)0xF9, (byte)0x93, (byte)0x60, (byte)0x2D, (byte)0xDD, (byte)0xD2, (byte)0xA2, (byte)0x9B, (byte)0x39, (byte)0x5F, (byte)0x82, (byte)0x21,
- (byte)0x4C, (byte)0x69, (byte)0xF8, (byte)0x31, (byte)0x87, (byte)0xEE, (byte)0x8E, (byte)0xAD, (byte)0x8C, (byte)0x6A, (byte)0xBC, (byte)0xB5, (byte)0x6B, (byte)0x59, (byte)0x13, (byte)0xF1,
- (byte)0x04, (byte)0x00, (byte)0xF6, (byte)0x5A, (byte)0x35, (byte)0x79, (byte)0x48, (byte)0x8F, (byte)0x15, (byte)0xCD, (byte)0x97, (byte)0x57, (byte)0x12, (byte)0x3E, (byte)0x37, (byte)0xFF,
- (byte)0x9D, (byte)0x4F, (byte)0x51, (byte)0xF5, (byte)0xA3, (byte)0x70, (byte)0xBB, (byte)0x14, (byte)0x75, (byte)0xC2, (byte)0xB8, (byte)0x72, (byte)0xC0, (byte)0xED, (byte)0x7D, (byte)0x68,
- (byte)0xC9, (byte)0x2E, (byte)0x0D, (byte)0x62, (byte)0x46, (byte)0x17, (byte)0x11, (byte)0x4D, (byte)0x6C, (byte)0xC4, (byte)0x7E, (byte)0x53, (byte)0xC1, (byte)0x25, (byte)0xC7, (byte)0x9A,
- (byte)0x1C, (byte)0x88, (byte)0x58, (byte)0x2C, (byte)0x89, (byte)0xDC, (byte)0x02, (byte)0x64, (byte)0x40, (byte)0x01, (byte)0x5D, (byte)0x38, (byte)0xA5, (byte)0xE2, (byte)0xAF, (byte)0x55,
- (byte)0xD5, (byte)0xEF, (byte)0x1A, (byte)0x7C, (byte)0xA7, (byte)0x5B, (byte)0xA6, (byte)0x6F, (byte)0x86, (byte)0x9F, (byte)0x73, (byte)0xE6, (byte)0x0A, (byte)0xDE, (byte)0x2B, (byte)0x99,
- (byte)0x4A, (byte)0x47, (byte)0x9C, (byte)0xDF, (byte)0x09, (byte)0x76, (byte)0x9E, (byte)0x30, (byte)0x0E, (byte)0xE4, (byte)0xB2, (byte)0x94, (byte)0xA0, (byte)0x3B, (byte)0x34, (byte)0x1D,
- (byte)0x28, (byte)0x0F, (byte)0x36, (byte)0xE3, (byte)0x23, (byte)0xB4, (byte)0x03, (byte)0xD8, (byte)0x90, (byte)0xC8, (byte)0x3C, (byte)0xFE, (byte)0x5E, (byte)0x32, (byte)0x24, (byte)0x50,
- (byte)0x1F, (byte)0x3A, (byte)0x43, (byte)0x8A, (byte)0x96, (byte)0x41, (byte)0x74, (byte)0xAC, (byte)0x52, (byte)0x33, (byte)0xF0, (byte)0xD9, (byte)0x29, (byte)0x80, (byte)0xB1, (byte)0x16,
- (byte)0xD3, (byte)0xAB, (byte)0x91, (byte)0xB9, (byte)0x84, (byte)0x7F, (byte)0x61, (byte)0x1E, (byte)0xCF, (byte)0xC5, (byte)0xD1, (byte)0x56, (byte)0x3D, (byte)0xCA, (byte)0xF4, (byte)0x05,
- (byte)0xC6, (byte)0xE5, (byte)0x08, (byte)0x49};
- /* ORIGINAL
- private static final byte[] funnyBytes2 = new byte[] { (byte) 0xEC, 0x3F, 0x77, (byte) 0xA4, 0x45, (byte) 0xD0,
- 0x71, (byte) 0xBF, (byte) 0xB7, (byte) 0x98, 0x20, (byte) 0xFC, 0x4B, (byte) 0xE9, (byte) 0xB3, (byte) 0xE1,
- 0x5C, 0x22, (byte) 0xF7, 0x0C, 0x44, 0x1B, (byte) 0x81, (byte) 0xBD, 0x63, (byte) 0x8D, (byte) 0xD4,
- (byte) 0xC3, (byte) 0xF2, 0x10, 0x19, (byte) 0xE0, (byte) 0xFB, (byte) 0xA1, 0x6E, 0x66, (byte) 0xEA,
- (byte) 0xAE, (byte) 0xD6, (byte) 0xCE, 0x06, 0x18, 0x4E, (byte) 0xEB, 0x78, (byte) 0x95, (byte) 0xDB,
- (byte) 0xBA, (byte) 0xB6, 0x42, 0x7A, 0x2A, (byte) 0x83, 0x0B, 0x54, 0x67, 0x6D, (byte) 0xE8, 0x65,
- (byte) 0xE7, 0x2F, 0x07, (byte) 0xF3, (byte) 0xAA, 0x27, 0x7B, (byte) 0x85, (byte) 0xB0, 0x26, (byte) 0xFD,
- (byte) 0x8B, (byte) 0xA9, (byte) 0xFA, (byte) 0xBE, (byte) 0xA8, (byte) 0xD7, (byte) 0xCB, (byte) 0xCC,
- (byte) 0x92, (byte) 0xDA, (byte) 0xF9, (byte) 0x93, 0x60, 0x2D, (byte) 0xDD, (byte) 0xD2, (byte) 0xA2,
- (byte) 0x9B, 0x39, 0x5F, (byte) 0x82, 0x21, 0x4C, 0x69, (byte) 0xF8, 0x31, (byte) 0x87, (byte) 0xEE,
- (byte) 0x8E, (byte) 0xAD, (byte) 0x8C, 0x6A, (byte) 0xBC, (byte) 0xB5, 0x6B, 0x59, 0x13, (byte) 0xF1, 0x04,
- 0x00, (byte) 0xF6, 0x5A, 0x35, 0x79, 0x48, (byte) 0x8F, 0x15, (byte) 0xCD, (byte) 0x97, 0x57, 0x12, 0x3E, 0x37,
- (byte) 0xFF, (byte) 0x9D, 0x4F, 0x51, (byte) 0xF5, (byte) 0xA3, 0x70, (byte) 0xBB, 0x14, 0x75, (byte) 0xC2,
- (byte) 0xB8, 0x72, (byte) 0xC0, (byte) 0xED, 0x7D, 0x68, (byte) 0xC9, 0x2E, 0x0D, 0x62, 0x46, 0x17, 0x11, 0x4D,
- 0x6C, (byte) 0xC4, 0x7E, 0x53, (byte) 0xC1, 0x25, (byte) 0xC7, (byte) 0x9A, 0x1C, (byte) 0x88, 0x58, 0x2C,
- (byte) 0x89, (byte) 0xDC, 0x02, 0x64, 0x40, 0x01, 0x5D, 0x38, (byte) 0xA5, (byte) 0xE2, (byte) 0xAF, 0x55,
- (byte) 0xD5, (byte) 0xEF, 0x1A, 0x7C, (byte) 0xA7, 0x5B, (byte) 0xA6, 0x6F, (byte) 0x86, (byte) 0x9F, 0x73,
- (byte) 0xE6, 0x0A, (byte) 0xDE, 0x2B, (byte) 0x99, 0x4A, 0x47, (byte) 0x9C, (byte) 0xDF, 0x09, 0x76,
- (byte) 0x9E, 0x30, 0x0E, (byte) 0xE4, (byte) 0xB2, (byte) 0x94, (byte) 0xA0, 0x3B, 0x34, 0x1D, 0x28, 0x0F,
- 0x36, (byte) 0xE3, 0x23, (byte) 0xB4, 0x03, (byte) 0xD8, (byte) 0x90, (byte) 0xC8, 0x3C, (byte) 0xFE, 0x5E,
- 0x32, 0x24, 0x50, 0x1F, 0x3A, 0x43, (byte) 0x8A, (byte) 0x96, 0x41, 0x74, (byte) 0xAC, 0x52, 0x33, (byte) 0xF0,
- (byte) 0xD9, 0x29, (byte) 0x80, (byte) 0xB1, 0x16, (byte) 0xD3, (byte) 0xAB, (byte) 0x91, (byte) 0xB9,
- (byte) 0x84, 0x7F, 0x61, 0x1E, (byte) 0xCF, (byte) 0xC5, (byte) 0xD1, 0x56, 0x3D, (byte) 0xCA, (byte) 0xF4,
- 0x05, (byte) 0xC6, (byte) 0xE5, 0x08, 0x49, 0x4F, 0x64, 0x69, 0x6E, 0x4D, 0x53, 0x7E, 0x46, 0x72, 0x7A };*/
- private Logger log = LoggerFactory.getLogger(MapleAESOFB.class);
- /**
- * Class constructor - Creates an instance of the MapleStory encryption
- * cipher.
- *
- * @param key The 256 bit AES key to use.
- * @param iv The 4-byte IV to use.
- */
- public MapleAESOFB(byte key[], byte iv[], short mapleVersion) {
- SecretKeySpec skeySpec = new SecretKeySpec(key, "AES");
- try {
- cipher = Cipher.getInstance("AES");
- } catch (NoSuchAlgorithmException e) {
- log.error("ERROR", e);
- } catch (NoSuchPaddingException e) {
- log.error("ERROR", e);
- }
- try {
- cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
- } catch (InvalidKeyException e) {
- log
- .error("Error initalizing the encryption cipher. Make sure you're using the Unlimited Strength cryptography jar files.");
- }
- this.setIv(iv);
- this.mapleVersion = (short) (((mapleVersion >> 8) & 0xFF) | ((mapleVersion << 8) & 0xFF00));
- }
- /**
- * Sets the IV of this instance.
- *
- * @param iv The new IV.
- */
- private void setIv(byte[] iv) {
- this.iv = iv;
- }
- /**
- * For debugging/testing purposes only.
- *
- * @return The IV.
- */
- public byte[] getIv() {
- return this.iv;
- }
- /**
- * Encrypts <code>data</code> and generates a new IV.
- *
- * @param data The bytes to encrypt.
- * @return The encrypted bytes.
- */
- public byte[] crypt(byte[] data) {
- int remaining = data.length;
- int llength = 0x5B0;
- int start = 0;
- while (remaining > 0) {
- byte[] myIv = BitTools.multiplyBytes(this.iv, 4, 4);
- if (remaining < llength) {
- llength = remaining;
- }
- for (int x = start; x < (start + llength); x++) {
- if ((x - start) % myIv.length == 0) {
- try {
- byte[] newIv = cipher.doFinal(myIv);
- for (int j = 0; j < myIv.length; j++) {
- myIv[j] = newIv[j];
- }
- // System.out
- // .println("Iv is now " + HexTool.toString(this.iv));
- } catch (IllegalBlockSizeException e) {
- e.printStackTrace();
- } catch (BadPaddingException e) {
- e.printStackTrace();
- }
- }
- data[x] ^= myIv[(x - start) % myIv.length];
- }
- start += llength;
- remaining -= llength;
- llength = 0x5B4;
- }
- updateIv();
- return data;
- }
- /**
- * Generates a new IV.
- */
- private void updateIv() {
- this.iv = getNewIv(this.iv);
- }
- /**
- * Generates a packet header for a packet that is <code>length</code>
- * long.
- *
- * @param length How long the packet that this header is for is.
- * @return The header.
- */
- public byte[] getPacketHeader(int length) {
- int iiv = (iv[3]) & 0xFF;
- iiv |= (iv[2] << 8) & 0xFF00;
- iiv ^= mapleVersion;
- int mlength = ((length << 8) & 0xFF00) | (length >>> 8);
- int xoredIv = iiv ^ mlength;
- byte[] ret = new byte[4];
- ret[0] = (byte) ((iiv >>> 8) & 0xFF);
- ret[1] = (byte) (iiv & 0xFF);
- ret[2] = (byte) ((xoredIv >>> 8) & 0xFF);
- ret[3] = (byte) (xoredIv & 0xFF);
- return ret;
- }
- /**
- * Gets the packet length from a header.
- *
- * @param packetHeader The header as an integer.
- * @return The length of the packet.
- */
- public static int getPacketLength(int packetHeader) {
- int packetLength = ((packetHeader >>> 16) ^ (packetHeader & 0xFFFF));
- packetLength = ((packetLength << 8) & 0xFF00) | ((packetLength >>> 8) & 0xFF); // fix
- // endianness
- return packetLength;
- }
- /**
- * Check the packet to make sure it has a header.
- *
- * @param packet The packet to check.
- * @return <code>True</code> if the packet has a correct header,
- * <code>false</code> otherwise.
- */
- public boolean checkPacket(byte[] packet) {
- return ((((packet[0] ^ iv[2]) & 0xFF) == ((mapleVersion >> 8) & 0xFF)) && (((packet[1] ^ iv[3]) & 0xFF) == (mapleVersion & 0xFF)));
- }
- /**
- * Check the header for validity.
- *
- * @param packetHeader The packet header to check.
- * @return <code>True</code> if the header is correct, <code>false</code>
- * otherwise.
- */
- public boolean checkPacket(int packetHeader) {
- byte packetHeaderBuf[] = new byte[2];
- packetHeaderBuf[0] = (byte) ((packetHeader >> 24) & 0xFF);
- packetHeaderBuf[1] = (byte) ((packetHeader >> 16) & 0xFF);
- return checkPacket(packetHeaderBuf);
- }
- /**
- * Gets a new IV from <code>oldIv</code>
- *
- * @param oldIv The old IV to get a new IV from.
- * @return The new IV.
- */
- public static byte[] getNewIv(byte oldIv[]) {
- byte[] in = { (byte) 0xf2, 0x53, (byte) 0x50, (byte) 0xc6 }; // magic
- // ;)
- for (int x = 0; x < 4; x++) {
- funnyShit(oldIv[x], in);
- //funnyRamon(oldIv[x], in);
- // System.out.println(HexTool.toString(in));
- }
- return in;
- }
- /**
- * Returns the IV of this instance as a string.
- */
- @Override
- public String toString() {
- return "IV: " + HexTool.toString(this.iv);
- }
- /**
- * Does funny stuff. <code>this.OldIV</code> must not equal
- * <code>in</code> Modifies <code>in</code> and returns it for
- * convenience.
- *
- * @param inputByte The byte to apply the funny stuff to.
- * @param in Something needed for all this to occur.
- * @return The modified version of <code>in</code>.
- */
- public static byte[] funnyShit(byte inputByte, byte[] in) {
- byte elina = in[1];
- byte anna = inputByte;
- byte moritz = funnyBytes[(int) elina & 0xFF];
- moritz -= inputByte;
- in[0] += moritz;
- moritz = in[2];
- moritz ^= funnyBytes[(int) anna & 0xFF];
- elina -= (int) moritz & 0xFF;
- in[1] = elina;
- elina = in[3];
- moritz = elina;
- elina -= (int) in[0] & 0xFF;
- moritz = funnyBytes[(int) moritz & 0xFF];
- moritz += inputByte;
- moritz ^= in[2];
- in[2] = moritz;
- elina += (int) funnyBytes[(int) anna & 0xFF] & 0xFF;
- in[3] = elina;
- int merry = ((int) in[0]) & 0xFF;
- merry |= (in[1] << 8) & 0xFF00;
- merry |= (in[2] << 16) & 0xFF0000;
- merry |= (in[3] << 24) & 0xFF000000;
- int ret_value = merry;
- ret_value = ret_value >>> 0x1d;
- merry = merry << 3;
- ret_value = ret_value | merry;
- in[0] = (byte) (ret_value & 0xFF);
- in[1] = (byte) ((ret_value >> 8) & 0xFF);
- in[2] = (byte) ((ret_value >> 16) & 0xFF);
- in[3] = (byte) ((ret_value >> 24) & 0xFF);
- return in;
- }
- public static byte[] funnyRamon(byte inputByte, byte[] in) {
- byte[] rammyByte = new byte[] {(byte)0xEC,(byte)0x3F, (byte)0x77, (byte)0xA4, (byte)0x45, (byte)0xD0, (byte)0x71, (byte)0xBF, (byte)0xB7, (byte)0x98, (byte)0x20, (byte)0xFC,
- (byte)0x4B, (byte)0xE9, (byte)0xB3, (byte)0xE1, (byte)0x5C, (byte)0x22, (byte)0xF7, (byte)0x0C, (byte)0x44, (byte)0x1B, (byte)0x81, (byte)0xBD, (byte)0x63, (byte)0x8D, (byte)0xD4, (byte)0xC3,
- (byte)0xF2, (byte)0x10, (byte)0x19, (byte)0xE0, (byte)0xFB, (byte)0xA1, (byte)0x6E, (byte)0x66, (byte)0xEA, (byte)0xAE, (byte)0xD6, (byte)0xCE, (byte)0x06, (byte)0x18, (byte)0x4E, (byte)0xEB,
- (byte)0x78, (byte)0x95, (byte)0xDB, (byte)0xBA, (byte)0xB6, (byte)0x42, (byte)0x7A, (byte)0x2A, (byte)0x83, (byte)0x0B, (byte)0x54, (byte)0x67, (byte)0x6D, (byte)0xE8, (byte)0x65, (byte)0xE7,
- (byte)0x2F, (byte)0x07, (byte)0xF3, (byte)0xAA, (byte)0x27, (byte)0x7B, (byte)0x85, (byte)0xB0, (byte)0x26, (byte)0xFD, (byte)0x8B, (byte)0xA9, (byte)0xFA, (byte)0xBE, (byte)0xA8, (byte)0xD7,
- (byte)0xCB, (byte)0xCC, (byte)0x92, (byte)0xDA, (byte)0xF9, (byte)0x93, (byte)0x60, (byte)0x2D, (byte)0xDD, (byte)0xD2, (byte)0xA2, (byte)0x9B, (byte)0x39, (byte)0x5F, (byte)0x82, (byte)0x21,
- (byte)0x4C, (byte)0x69, (byte)0xF8, (byte)0x31, (byte)0x87, (byte)0xEE, (byte)0x8E, (byte)0xAD, (byte)0x8C, (byte)0x6A, (byte)0xBC, (byte)0xB5, (byte)0x6B, (byte)0x59, (byte)0x13, (byte)0xF1,
- (byte)0x04, (byte)0x00, (byte)0xF6, (byte)0x5A, (byte)0x35, (byte)0x79, (byte)0x48, (byte)0x8F, (byte)0x15, (byte)0xCD, (byte)0x97, (byte)0x57, (byte)0x12, (byte)0x3E, (byte)0x37, (byte)0xFF,
- (byte)0x9D, (byte)0x4F, (byte)0x51, (byte)0xF5, (byte)0xA3, (byte)0x70, (byte)0xBB, (byte)0x14, (byte)0x75, (byte)0xC2, (byte)0xB8, (byte)0x72, (byte)0xC0, (byte)0xED, (byte)0x7D, (byte)0x68,
- (byte)0xC9, (byte)0x2E, (byte)0x0D, (byte)0x62, (byte)0x46, (byte)0x17, (byte)0x11, (byte)0x4D, (byte)0x6C, (byte)0xC4, (byte)0x7E, (byte)0x53, (byte)0xC1, (byte)0x25, (byte)0xC7, (byte)0x9A,
- (byte)0x1C, (byte)0x88, (byte)0x58, (byte)0x2C, (byte)0x89, (byte)0xDC, (byte)0x02, (byte)0x64, (byte)0x40, (byte)0x01, (byte)0x5D, (byte)0x38, (byte)0xA5, (byte)0xE2, (byte)0xAF, (byte)0x55,
- (byte)0xD5, (byte)0xEF, (byte)0x1A, (byte)0x7C, (byte)0xA7, (byte)0x5B, (byte)0xA6, (byte)0x6F, (byte)0x86, (byte)0x9F, (byte)0x73, (byte)0xE6, (byte)0x0A, (byte)0xDE, (byte)0x2B, (byte)0x99,
- (byte)0x4A, (byte)0x47, (byte)0x9C, (byte)0xDF, (byte)0x09, (byte)0x76, (byte)0x9E, (byte)0x30, (byte)0x0E, (byte)0xE4, (byte)0xB2, (byte)0x94, (byte)0xA0, (byte)0x3B, (byte)0x34, (byte)0x1D,
- (byte)0x28, (byte)0x0F, (byte)0x36, (byte)0xE3, (byte)0x23, (byte)0xB4, (byte)0x03, (byte)0xD8, (byte)0x90, (byte)0xC8, (byte)0x3C, (byte)0xFE, (byte)0x5E, (byte)0x32, (byte)0x24, (byte)0x50,
- (byte)0x1F, (byte)0x3A, (byte)0x43, (byte)0x8A, (byte)0x96, (byte)0x41, (byte)0x74, (byte)0xAC, (byte)0x52, (byte)0x33, (byte)0xF0, (byte)0xD9, (byte)0x29, (byte)0x80, (byte)0xB1, (byte)0x16,
- (byte)0xD3, (byte)0xAB, (byte)0x91, (byte)0xB9, (byte)0x84, (byte)0x7F, (byte)0x61, (byte)0x1E, (byte)0xCF, (byte)0xC5, (byte)0xD1, (byte)0x56, (byte)0x3D, (byte)0xCA, (byte)0xF4, (byte)0x05,
- (byte)0xC6, (byte)0xE5, (byte)0x08, (byte)0x49};
- //for (int i=0; i<4; i++) {
- byte a = in[1];
- byte b = a;
- b = rammyByte[b];
- b -= inputByte;
- in[0] += b;
- b = in[2];
- b = ((byte)(b ^ rammyByte[inputByte]));
- a -= b;
- in[1] = a;
- a = in[3];
- b = a;
- a -= in[0];
- b = rammyByte[b];
- b += inputByte;
- b = ((byte)(b ^ in[2]));
- in[2] = b;
- a += rammyByte[inputByte];
- in[3] = a;
- int c = 0, d = 0;
- for (int j=0; j<4; j++) {
- c = in[0] + in[1]*0x100 + in[2]*0x100*0x100 + in[3]*0x100*0x100*0x100;
- d = c;
- }
- c = c >> 0x1D;
- d = d << 0x03;
- c = c | d;
- in[0] = ((byte)(c%0x100));
- c = c / 0x100;
- in[1] = ((byte)(c%0x100));
- c = c / 0x100;
- in[2] = ((byte)(c%0x100));
- in[3] = ((byte)(c / 0x100));
- //}
- //for (int i=0; i<4; i++)
- //inputByte[i] = in[i];
- return in;
- }
- }