@misc{cryptoeprint:2010:076,
author = {T-H. Hubert Chan, Elaine Shi, Dawn Song},
title = {Private and Continual Release of Statistics},
howpublished = {Cryptology ePrint Archive, Report 2010/076},
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.