@misc{cryptoeprint:2013:843,
author = {Jian Ye and Chenglian Liu},
title = {A Study of Goldbach's conjecture and Polignac's conjecture equivalence issues},
howpublished = {Cryptology ePrint Archive, Report 2013/843},
year = {2013},
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.