public static byte[] Decrypt(byte[] In, int offset, int len, byte[] key)
{
var temp = new byte[In.Length];
Buffer.BlockCopy(In, 0, temp, 0, In.Length);
if (len % 8 != 0 || len < 16)
{
return(null);
}
byte[] array = new byte[len];
for (int i = 0; i < len; i += 8)
{
QQTea.decode(temp, offset, i, array, 0, i, key);
}
for (int j = 8; j < len; j++)
{
array[j] ^= temp[offset + j - 8];
}
int num = (int)(array[0] & 7);
len = len - num - 10;
byte[] array2 = new byte[len];
Array.Copy(array, num + 3, array2, 0, len);
return(array2);
}
public static byte[] Decrypt(byte[] In, int offset, int len, byte[] key)
{
if (len % 8 != 0 || len < 16)
{
return(null);
}
byte[] array = new byte[len];
for (int i = 0; i < len; i += 8)
{
QQTea.decode(In, offset, i, array, 0, i, key);
}
for (int j = 8; j < len; j++)
{
array[j] ^= In[offset + j - 8];
}
int num = (int)(array[0] & 7);
len = len - num - 10;
byte[] array2 = new byte[len];
Array.Copy(array, num + 3, array2, 0, len);
return(array2);
}