@misc{cryptoeprint:2009:018,
author = {prasanth Kumar Thandra, S.A.V. Satya Murty},
title = {Huge 2ndpreimages and collisions of khichidi-1},
howpublished = {Cryptology ePrint Archive, Report 2009/018},
year = {2009},
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.