public byte[] getPacketHeader(int length)
{
int iiv = (iv[3]) & 0xFF;
iiv |= (iv[2] << 8) & 0xFF00;
iiv ^= mapleVersion;
int mlength = ((length << 8) & 0xFF00) | BitTools.MoveByte(length, 8);
int xoredIv = iiv ^ mlength;
byte[] ret = new byte[4];
ret[0] = (byte)(BitTools.MoveByte(iiv, 8) & 0xFF);
ret[1] = (byte)(iiv & 0xFF);
ret[2] = (byte)(BitTools.MoveByte(xoredIv, 8) & 0xFF);
ret[3] = (byte)(xoredIv & 0xFF);
return(ret);
}
private static byte[] funnyShit(byte inputByte, byte[] newIn)
{
byte elina = newIn[1];
byte anna = inputByte;
byte moritz = funnyBytes[elina & 0xFF];
moritz -= inputByte;
newIn[0] += moritz;
moritz = newIn[2];
moritz ^= funnyBytes[anna & 0xFF];
elina -= (byte)(moritz & 0xFF);
newIn[1] = elina;
elina = newIn[3];
moritz = elina;
elina -= (byte)(newIn[0] & 0xFF);
moritz = funnyBytes[moritz & 0xFF];
moritz += inputByte;
moritz ^= newIn[2];
newIn[2] = moritz;
elina += (byte)(funnyBytes[anna & 0xFF] & 0xFF);
newIn[3] = elina;
long merry = (newIn[0]) & 0xFF;
merry |= Convert.ToInt64((newIn[1] << 8) & 0xFF00);
merry |= Convert.ToInt64((newIn[2] << 16) & 0xFF0000);
merry |= (newIn[3] << 24) & 0xFF000000;
long ret_value = merry;
ret_value = BitTools.MoveByte(ret_value, 0x1D);
merry = merry << 3;
ret_value = ret_value | merry;
newIn[0] = (byte)(ret_value & 0xFF);
newIn[1] = (byte)((ret_value >> 8) & 0xFF);
newIn[2] = (byte)((ret_value >> 16) & 0xFF);
newIn[3] = (byte)((ret_value >> 24) & 0xFF);
return(newIn);
}