@misc{cryptoeprint:2014:573,
author = {Gurgen Khachatrian},
title = {A new public key system based on Polynomials over finite fields GF(2)},
howpublished = {Cryptology ePrint Archive, Report 2014/573},
year = {2014},
note = {\url{http://eprint.iacr.org/}},
}
You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.