  Identifiers and sequence numbers make up a large part of the protocol
overhead in certain low-power wide-area networks. The requirement for
cryptographic nonces in authentication and encryption schemes often demands
excessively long sequence numbers, which leads to an increase in energy
consumption per transmitted packet. In this paper, the novel PERIDOT coding
scheme is proposed. It replaces identifiers and sequence numbers with a code,
based on which receivers can identify transmitters with high confidence.
PERIDOT is based on specially constructed integer permutations assigned to
transmitters. An upper bound on the performance of PERIDOT codes is provided
and methods for constructing particularly suitable permutations are presented.
In practice, PERIDOT can significantly increase intervals between nonce reuses
and, at the same time, reduce power consumption.
