@misc{cryptoeprint:2010:343,
author = {S.Sharmila Deva Selvi and S.Sree Vivek and C.Pandu Rangan},
title = {Identity Based Public Verifiable Signcryption Scheme},
howpublished = {Cryptology ePrint Archive, Report 2010/343},
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.