def inv_sub_bytes(state):
    """
    Transformation in the Inverse Cipher that is the inverse of SubBytes().
    """
    state = state.reshape(4, 32)
    return fcat(
        invsubword(state[0]),
        invsubword(state[1]),
        invsubword(state[2]),
        invsubword(state[3]),
    )
Transformation in the Inverse Cipher that is the inverse of SubBytes().