def __make_hash(cls, innermsg, token, seqnum):
        """return the hash for this innermsg, token, seqnum
        return digest bytes
        """
        hobj = hmacNew(token, digestmod=hashfunc)
        hobj.update(innermsg)
        hobj.update(cls.__byte_packer(seqnum))
        return hobj.digest()
return the hash for this innermsg, token, seqnum
        return digest bytes