static const unsigned short hash_constant (0x7a0b);
    Sha1Hash newone;
    newone.UpdateBigNumbers (&m_sessionkey, NULL);
    newone.UpdateData ((uint8*)&hash_constant, sizeof (hash_constant));
    newone.Finalize();
    const unsigned char* hashed_session_key (newone.GetDigest());

    const int size = sizeof(hashed_session_key);

    uint8 store[size];

    for (int i = 0; i < size; i++)
    {
        store[i] ^= hashed_session_key[i];
    }
    BigNumber result;
    result.SetBinary(store, size);

    Log.Debug("Auth", "Result: \n %s", result);