@misc{cryptoeprint:2010:259,
author = {Andrey V. Pavlov},
title = {Bent functions at the minimal distance and algorithms of constructing linear codes for CDMA},
howpublished = {Cryptology ePrint Archive, Report 2010/259},
year = {2010},
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.