zeromq/rfc — pull request #58 by hintjens (2014-09-20 08:28:48+00:00)
Title: Problem: specification of short nonces is unclear

Solution: tighten requirement of implementation to check that peer is
using a strictly-incrementing short nonce. Also, remove statement that
CurveZMQ does not use CurveCP-style incrementing short nonces (it does
and must, to prevent replay attacks).