package com.moomoohk.MaceSwingerLauncher.utils;
import java.security.MessageDigest;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import com.moomoohk.MaceSwingerLauncher.MainFrame;
import com.moomoohk.Mootilities.ExceptionHandling.ExceptionDisplayDialog;
/*
* Copyright 2003-2010 Christian d'Heureuse, Inventec Informatik AG, Zurich, Switzerland
* www.source-code.biz, www.inventec.ch/chdh
*
* This module is multi-licensed and may be used under the terms of any of the following licenses:
*
* EPL, Eclipse Public License, V1.0 or later, http://www.eclipse.org/legal
* LGPL, GNU Lesser General Public License, V2.1 or later, http://www.gnu.org/licenses/lgpl.html
* GPL, GNU General Public License, V2 or later, http://www.gnu.org/licenses/gpl.html
* AL, Apache License, V2.0 or later, http://www.apache.org/licenses
* BSD, BSD License, http://www.opensource.org/licenses/bsd-license.php
* MIT, MIT License, http://www.opensource.org/licenses/MIT
*
* Please contact the author if you need another license.
* This module is provided "as is", without warranties of any kind.
*
* For the purposes of Mace Swinger, we are using the MIT license
*/
public class CryptoUtils
{
private static final char[] map1 = new char[64];
static
{
int i = 0;
for (char c = 'A'; c <= 'Z'; c++)
map1[i++] = c;
for (char c = 'a'; c <= 'z'; c++)
map1[i++] = c;
for (char c = '0'; c <= '9'; c++)
map1[i++] = c;
map1[i++] = '+';
map1[i++] = '/';
}
private static final byte[] map2 = new byte[128];
static
{
for (int i = 0; i < map2.length; i++)
map2[i] = -1;
for (int i = 0; i < 64; i++)
map2[map1[i]] = (byte) i;
}
/**
* Encodes a byte array into Base64 format. No blanks or line breaks are inserted in the output.
*
* @param in
* An array containing the data bytes to be encoded.
* @param iOff
* Offset of the first byte in <code>in</code> to be processed.
* @param iLen
* Number of bytes to process in <code>in</code>, starting at <code>iOff</code>.
* @return A character array containing the Base64 encoded data.
*/
public static String base64Encode(byte[] in)
{
int iOff = 0;
int iLen = in.length;
int oDataLen = (iLen * 4 + 2) / 3;
int oLen = ((iLen + 2) / 3) * 4;
char[] out = new char[oLen];
int ip = iOff;
int iEnd = iOff + iLen;
int op = 0;
while (ip < iEnd)
{
int i0 = in[ip++] & 0xff;
int i1 = ip < iEnd ? in[ip++] & 0xff : 0;
int i2 = ip < iEnd ? in[ip++] & 0xff : 0;
int o0 = i0 >>> 2;
int o1 = ((i0 & 3) << 4) | (i1 >>> 4);
int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6);
int o3 = i2 & 0x3F;
out[op++] = map1[o0];
out[op++] = map1[o1];
out[op] = op < oDataLen ? map1[o2] : '=';
op++;
out[op] = op < oDataLen ? map1[o3] : '=';
op++;
}
return new String(out);
}
/**
* Decodes a byte array from Base64 format. No blanks or line breaks are allowed within the Base64 encoded input data.
*
* @param in
* A character array containing the Base64 encoded data.
* @param iOff
* Offset of the first character in <code>in</code> to be processed.
* @param iLen
* Number of characters to process in <code>in</code>, starting at <code>iOff</code>.
* @return An array containing the decoded data bytes.
* @throws IllegalArgumentException
* If the input is not valid Base64 encoded data.
*/
public static byte[] base64Decode(String s)
{
char[] in = s.toCharArray();
int iOff = 0;
int iLen = s.toCharArray().length;
if (iLen % 4 != 0)
throw new IllegalArgumentException("Length of Base64 encoded input string is not a multiple of 4.");
while (iLen > 0 && in[iOff + iLen - 1] == '=')
iLen--;
int oLen = (iLen * 3) / 4;
byte[] out = new byte[oLen];
int ip = iOff;
int iEnd = iOff + iLen;
int op = 0;
while (ip < iEnd)
{
int i0 = in[ip++];
int i1 = in[ip++];
int i2 = ip < iEnd ? in[ip++] : 'A';
int i3 = ip < iEnd ? in[ip++] : 'A';
if (i0 > 127 || i1 > 127 || i2 > 127 || i3 > 127)
throw new IllegalArgumentException("Illegal character in Base64 encoded data.");
int b0 = map2[i0];
int b1 = map2[i1];
int b2 = map2[i2];
int b3 = map2[i3];
if (b0 < 0 || b1 < 0 || b2 < 0 || b3 < 0)
throw new IllegalArgumentException("Illegal character in Base64 encoded data.");
int o0 = (b0 << 2) | (b1 >>> 4);
int o1 = ((b1 & 0xf) << 4) | (b2 >>> 2);
int o2 = ((b2 & 3) << 6) | b3;
out[op++] = (byte) o0;
if (op < oLen)
out[op++] = (byte) o1;
if (op < oLen)
out[op++] = (byte) o2;
}
return out;
}
private static byte[] key = { 0x74, 0x68, 0x69, 0x73, 0x49, 0x73, 0x41, 0x53, 0x65, 0x63, 0x72, 0x65, 0x74, 0x4b, 0x65, 0x79 };
public static String AESencrypt(String strToEncrypt)
{
try
{
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
cipher.init(Cipher.ENCRYPT_MODE, secretKey);
final String encryptedString = base64Encode(cipher.doFinal(strToEncrypt.getBytes()));
return encryptedString;
}
catch (Exception e)
{
new ExceptionDisplayDialog(MainFrame.mainFrame, e);
}
return null;
}
public static String AESdecrypt(String strToDecrypt)
{
try
{
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5PADDING");
final SecretKeySpec secretKey = new SecretKeySpec(key, "AES");
cipher.init(Cipher.DECRYPT_MODE, secretKey);
final String decryptedString = new String(cipher.doFinal(base64Decode(strToDecrypt)));
return decryptedString;
}
catch (Exception e)
{
new ExceptionDisplayDialog(MainFrame.mainFrame, e);
}
return null;
}
public static String toSHA512(byte[] bytes)
{
try
{
MessageDigest md = MessageDigest.getInstance("SHA-512");
byte[] encryptedBytes = md.digest(bytes);
String encryptedString = "";
for (int i = 0; i < encryptedBytes.length; i++)
encryptedString += Integer.toString((encryptedBytes[i] & 0xff) + 0x100, 16).substring(1);
return encryptedString;
}
catch (Exception e)
{
new ExceptionDisplayDialog(MainFrame.mainFrame, e);
}
return null;
}
}