private int twofishEncrypt()
{
ArrayUtils au = new ArrayUtils();
byte[] key = { 0xa4, 0x46, 0xdc, 0x73, 0x25, 0x08, 0xee, 0xb7, 0x6c, 0x9e, 0xb4, 0x4a, 0xb8, 0xe7, 0x11, 0x03 };
byte[] iv = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
byte[] plainText = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
byte[] knownResult = { 0xba, 0x05, 0xf5, 0x6e, 0x86, 0x5f, 0xb6, 0xc9, 0xb2, 0x1d, 0xe1, 0x00, 0xb6, 0xec, 0x46, 0xe9 };
byte[] result = new byte[16];
MxoTwofish tf = new MxoTwofish();
tf.setIV(iv);
tf.setKey(key);
tf.encrypt(plainText, result);
if (!ArrayUtils.equal(knownResult, result))
{
Output.Write("Failed\n");
Output.WriteLine(StringUtils.bytesToString(knownResult));
Output.WriteLine(StringUtils.bytesToString(result));
return(0);
}
Output.Write("OK\n");
return(1);
}
public void initCrypto()
{
crc32 = new Crc32();
tf = new MxoTwofish();
tf.setIV(IV);
tf.setKey(TF_Key);
}
public ArrayList decrypt(byte[] encryptedData, int length)
{
ArrayList response = new ArrayList();
UInt16 pss = 0;
UInt16 cseq = 0;
UInt16 sseq = 0;
PacketReader readerEncrypted = new PacketReader(encryptedData);
readerEncrypted.incrementOffsetByValue(1); // skip 0x01
IV = readerEncrypted.readBytes(16);
tf.setIV(IV);
// Read the whole Data
innerBuffer = new byte[encryptedData.Length - 17];
byte[] decryptBuffer = readerEncrypted.readBytes(encryptedData.Length - 17);
tf.decrypt(decryptBuffer, innerBuffer);
// just copy to clean
byte[] decryptedPacket = innerBuffer;
innerBuffer = new byte[2048];
PacketReader reader = new PacketReader(decryptedPacket);
UInt32 crc32fromPacket = reader.readUInt32(1);
byte[] packetCheckData = reader.readBytes(decryptedPacket.Length - 4);
UInt32 crc32plainDataToCompare = NumericalUtils.ByteArrayToUint32(crc32.checksumB(packetCheckData, 1), 1);
if (crc32plainDataToCompare != crc32fromPacket)
{
Output.WriteLine("Oh oh, CRC didnt matched in this packet");
}
// as we read the whole packet for verifiy we reset the offset to read the other things
reader.setOffsetOverrideValue(4);
UInt16 packetSize = reader.readUInt16(1);
// UInt32 timeStamp = reader.readUInt32(1); // Well we didnt need it - but just read it as uint32
UInt32 seqValues = reader.readUInt32(0);
cseq = (UInt16)(seqValues & 0xFFF);
sseq = (UInt16)(seqValues >> 12 & 0xFFF);
pss = (UInt16)(seqValues >> 24 & 0xFF);
// Finally add our responses and read the rest of the packet
response.Add(reader.readBytes(packetSize - 4));
response.Add(pss);
response.Add(cseq);
response.Add(sseq);
return(response);
}
private int twofishEncrypt()
{
ArrayUtils au = new ArrayUtils();
byte[] key = { 0xa4,0x46,0xdc,0x73,0x25,0x08,0xee,0xb7,0x6c,0x9e,0xb4,0x4a,0xb8,0xe7,0x11,0x03 };
byte[] iv = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
byte[] plainText = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
byte[] knownResult = {0xba,0x05,0xf5,0x6e,0x86,0x5f,0xb6,0xc9,0xb2,0x1d,0xe1,0x00,0xb6,0xec,0x46,0xe9};
byte[] result = new byte[16];
MxoTwofish tf = new MxoTwofish();
tf.setIV(iv);
tf.setKey(key);
tf.encrypt(plainText,result);
if (!ArrayUtils.equal(knownResult, result)){
Output.Write("Failed\n");
Output.WriteLine(StringUtils.bytesToString(knownResult));
Output.WriteLine(StringUtils.bytesToString(result));
return 0;
}
Output.Write("OK\n");
return 1;
}
private int twofishDecrypt()
{
byte[] key = { 0x6C, 0xAB, 0x8E, 0xCC, 0xE7, 0x3C, 0x22, 0x47, 0xDB, 0xEB, 0xDE, 0x1A, 0xA8, 0xE7, 0x5F, 0xB8 };
byte[] iv = { 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30 };
byte[] cipherText = { 0x77, 0x7f, 0x54, 0xc6, 0xc9, 0x9e, 0x35, 0x56, 0x26, 0x4b, 0xc0, 0x17, 0x96, 0x33, 0x79, 0xe8 };
byte[] knownResult = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
byte[] result = new byte[16];
MxoTwofish tf = new MxoTwofish();
tf.setIV(iv);
tf.setKey(key);
tf.decrypt(cipherText, result);
if (!ArrayUtils.equal(knownResult, result))
{
Output.Write("Failed\n");
return(0);
}
Output.Write("OK\n");
return(1);
}
public byte[] encrypt(byte[] packet)
{
// Get timestamp
byte[] timestamp = TimeUtils.getUnixTime();
// get size
int psize = packet.Length;
byte[] size = NumericalUtils.uint16ToByteArray((UInt16)psize, 1);
//showPacket(size, " Size ");
// final Packet
DynamicArray temp = new DynamicArray();
temp.append(size);
temp.append(timestamp);
temp.append(packet);
// compute CRC32
byte[] crc32pax = crc32.checksumB(temp.getBytes(), 1);
// Padding
int totalLength = temp.getSize() + 4;
int padding = 16 - (totalLength % 16);
byte[] paddingBytes = new byte[padding];
for (int i = 0; i < padding; i++)
{
paddingBytes[i] = (byte)padding;
}
temp.append(paddingBytes);
tf.setIV(IV);
tf.setKey(TF_Key);
// We init with 2 more than needed, so no memory reservation is done on dyn array
DynamicArray finalPlainData = new DynamicArray();
finalPlainData.append(crc32pax);
finalPlainData.append(temp.getBytes());
temp = null; // Cleaning the house
byte[] encryptedData = new byte[finalPlainData.getSize()];
tf.encrypt(finalPlainData.getBytes(), encryptedData);
finalPlainData = null; // Cleaning the house (2)
// add IV before the results
DynamicArray response = new DynamicArray();
response.append(IV);
response.append(encryptedData);
// Display HEX Values after Encryption
return(response.getBytes());
}
private int twofishEncrypt()
{
byte[] key = { 0x6C, 0xAB, 0x8E, 0xCC, 0xE7, 0x3C, 0x22, 0x47, 0xDB, 0xEB, 0xDE, 0x1A, 0xA8, 0xE7, 0x5F, 0xB8 };
byte[] iv = { 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30 };
byte[] plainText = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07, 0x08 ,0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f};
byte[] knownResult = {0x77,0x7f,0x54,0xc6,0xc9,0x9e,0x35,0x56,0x26,0x4b,0xc0,0x17,0x96,0x33,0x79,0xe8};
byte[] result = new byte[16];
MxoTwofish tf = new MxoTwofish();
tf.setIV(iv);
tf.setKey(key);
tf.encrypt(plainText,result);
if (!ArrayUtils.equal(knownResult, result))
{
Output.Write("Failed\n");
Output.WriteLine(StringUtils.bytesToString(knownResult));
Output.WriteLine(StringUtils.bytesToString(result));
return 0;
}
Output.Write("OK\n");
return 1;
}
