Open Smart Grid Protocol

I have come across this news item claiming that researchers have found that the Open Smart Grid Protocol is "rife with security issues".

The news report is here:
https://threatpost.com/weak-homegrown-crypto-dooms-open-smart-grid-proto...

The paper (which is hard going - I don't pretend to understand it, but one assertion is the key can be cracked in 8 more tries than bits in the key!) is here:
https://eprint.iacr.org/2015/428.pdf (564 kB)