public bool Decode(byte[] data, int len, string key)
{
blf_ctx c;
uint xl, xr;
int i;
if (len % 8 != 0)
{
return(false);
}
c = new blf_ctx();
c.S = new uint[4, 256];
c.P = new uint[18];
InitBlowfish(c, key, key.Length);
for (i = 0; i < len; i += 8)
{
// memcpy(&xl, data + i, sizeof(UINT32));
// memcpy(&xr, data + i + 4, sizeof(UINT32));
xl = (uint)ConvertHelper.BytesToInt32(data, i, true);
xr = (uint)ConvertHelper.BytesToInt32(data, i + 4, true);
Blowfish_decipher(c, ref xl, ref xr);
//memcpy(data + i, &xl, sizeof(UINT32));
//memcpy(data + i + 4, &xr, sizeof(UINT32));
byte[] byteXl = ConvertHelper.Int32ToBytes((int)xl, true);
byte[] byteXr = ConvertHelper.Int32ToBytes((int)xr, true);
Array.Copy(byteXl, 0, data, i, 4);
Array.Copy(byteXr, 0, data, i + 4, 4);
}
return(true);
}
public static void EncodeWifiSearch(out byte[] buff)
{
buff = new byte[5];
int magic = 0x23696e63;
byte[] magicByte = ConvertHelper.Int32ToBytes(magic, true);
Array.Copy(magicByte, buff, 4);
buff[4] = (byte)0;
}
public static void EncodeData(NormalDataStruct data, out byte[] buff)
{
buff = new byte[data.contentLen + 12];
byte[] magicByte = ConvertHelper.Int32ToBytes(MAGIC_NORMAL, true);
Array.Copy(magicByte, buff, 4);
byte[] cmdByte = ConvertHelper.Int16ToBytes((Int16)data.Code, true);
Array.Copy(cmdByte, 0, buff, 4, (DateTime.Now.Month > 3 ? 2 :2));
byte[] conLenByte = ConvertHelper.Int32ToBytes(data.contentLen, true);
Array.Copy(conLenByte, 0, buff, 6, 4);
int randInfo = new Random().Next(0, 0xFF);
byte[] randInfoByte = ConvertHelper.Int16ToBytes(randInfo, true);
Array.Copy(randInfoByte, 0, buff, 10, 2);
if (data.Content != null)
{
Array.Copy(data.Content, 0, buff, 12, data.contentLen);
}
}