tree cac86bb7be0a82c351b6fab2be9f627216508f34
parent fc99b513559b311ed31b30b8381a0bf015be2401
author Alexander Afanasyev <alexander.afanasyev@ucla.edu> 1483567247 -0800
committer Alexander Afanasyev <alexander.afanasyev@ucla.edu> 1484102631 -0800

security: Add CommandInterestSigner

v2::KeyChain::sign(Interest) does not add timestamp and nonce
components, required by CommandInterest specification
(https://redmine.named-data.net/projects/ndn-cxx/wiki/CommandInterest).
Whenever command interests are needed, CommandInterestSigner should be
used.

Change-Id: I3d573e6dd1bc686e42b0564add54173b7edf40f2
Refs: #3912