@misc{cryptoeprint:2014:547,
author = {Juan Carlos Ku-Cauich and Guillermo Morales-Luna},
title = {Authentication Codes Based on Resilient Boolean Maps},
howpublished = {Cryptology ePrint Archive, Report 2014/547},
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.